Article de revue avec comité de lecture (16)
SCHWARZ Sebastian, PREDA Marius, BARONCINI Vittorio , BUDAGAVI Madhukar, CESAR Pablo, CHOU Philip A. , COHEN Robert A. , KRIVOKUCA Maja , LASSERRE Sebastien , LI Zhu , LLACH Joan , MAMMOU Khaled , MEKURIA Rufael , NAKAGAMI Ohji , SIAHAAN Ernestasia , TABATABAI Ali, TOURAPIS Alexis M., ZAKHARCHENKO Vladyslav
Emerging MPEG standards for point cloud compression. IEEE journal on emerging and selected topics in circuits and systems, march 2019, vol. 9, n° 1, pp. 133-148
abstract
Due to the increased popularity of augmented and virtual reality experiences, the interest in capturing the real world in multiple dimensions and in presenting it to users in an immersible fashion has never been higher. Distributing such representations enables users to freely navigate in multi-sensory 3D media experiences. Unfortunately, such representations require a large amount of data, not feasible for transmission on today's networks. Efficient compression technologies well adopted in the content chain are in high demand and are key components to democratize augmented and virtual reality applications. The Moving Picture Experts Group, MPEG, as one of the main standardization groups dealing with multimedia, identified the trend and started recently the process of building an open standard for compactly representing 3D point clouds, which are the 3D equivalent of the very well-known 2D pixels. This paper introduces the main developments and technical aspects of this ongoing standardization effort
KIM Sang Kyun, SAHU Nevadita, PREDA Marius
Beginning of a new standard: Internet of Media Things. KSII Transactions on internet and information systems, november 2017, vol. 11, n° 11, pp. 5182-5199
URL: http://itiis.org/digital-library/manuscript/file/1836/TIIS+Vol+11,+No+11-1.pdf
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abstract
Recently, Internet of Things (IoT) drives a large variety of research, development, and new type of markets. All type of devices and sensors will be part of the Internet of Things and will be able to communicate not only plain data, but also audio-visual, olfactory, and haptic media data. In addition, as the devices and sensors getting smarter, it is highly probable that they can process acquired media and metadata to extract higher level of information (e.g., semantics). To support such enhanced functionalities, ISO/IEC SC29 WG11 (MPEG) starts a new standard project, ISO/IEC 23093, called Internet of Media Things (IoMT) to provide standard data formats and APIs for media things. This paper presents the standardization activities of IoMT focusing on explaining terms, standard scopes, and major media things with their use cases. One of the use cases, an IoT system for a blind pedestrian navigation assistance, is evaluated to prove its effectiveness
MAIDI Madjid, ABABSA Fakhreddine , MALLEM Malik, PREDA Marius
Hybrid tracking system for robust fiducials registration in augmented reality. Signal, image and video processing, may 2015, vol. 9, n° 4, pp. 831-849
abstract
An effective augmented reality system requires an accurate registration of virtual graphics on real images. In this work, we developed a multi-modal tracking architecture for object identification and occlusion handling. Our approach combines several sensors and techniques to overcome the environment changes. This architecture is composed of a first coded targets registration module based on a hybrid algorithm of pose estimation. To manage partial target occlusions, a second module based on a robust method for feature points tracking is developed. The latest component of the system is the hybrid tracking module. This multi-sensors part handles total target occlusions issue. Experiments with the multi-modal system proved the effectiveness of the proposed tracking approach and occlusion handling in augmented reality applications
PREDA Marius
3D content processing challenges for Mixed Reality. IEEE communications letters, may 2014, vol. 9, n° 3, pp. 16-20
abstract
In this paper we are presenting several issues, possible solutions and future trends in addressing 3D aspects in Augmented Reality and Augmented Virtuality
PREDA Marius, JOVANOVA Blagica
Avatar interoperability and control in virtual Worlds. Signal processing : image communication, february 2013, vol. 28, n° 2, pp. 168-180
abstract
Virtual worlds (VWs), and especially the ones using 3D graphics content, have been massively developed and deployed over the last few years. Technological developments, both in hardware and software, bring up significant improvements in the areas of display, graphics, animation, distributed systems, network and mobile phones technology. These improvements allow almost every user on Web 2.0 to have a representation in different VWs. In those VWs, avatars have a specific place, representing a graphical appearance of human beings and a container for the users' specific data. Therefore, the need to reuse them across different VWs and across different platforms increases significantly. In this paper we are presenting a framework that allows interoperability of avatars between VWs. The proposed method consists of considering the avatar as a combination of a template and a set of characteristics that personalizes the template. The former, which is specific to each VW, can remain proprietary; the latter will be exchanged between the VWs. Therefore, the proposed solution is equilibrating the interests of end-users and VWs providers, allowing to not recreate an avatar for each VW and ensuring that user-defined avatars are consistent with the VW, technically- and businesswise
PREDA Marius, MORAN BURGOS Francisco, TIMMERER Christian
Introduction to the special issue on MPEG-V. Signal processing : image communication, february 2013, vol. 28, n° 2, pp. 85-86
abstract
Introducing the MPEG-V stanndard and the special issue papers.
TULVAN Christian Liviu, PREDA Marius
3D graphics coding in a reconfigurable environment. Signal processing : image communication, november 2013, vol. 28, n° 10, pp. 1239-1254
abstract
The main objective of this paper is to introduce the concept of Reconfigurable Graphic Coding and its validation under the form of a Functional Units (FU) library. The heterogeneity of data for 3D graphics objects representation requires the adaptability of the compression schemas to various types of content. While such adaptation can be relatively easy to support in software implementations, the same is much more difficult to implement in hardware. Although compression schemas inherently share the same data processing chain, the components forming it may vary with respect to the number and type of components to encode, data range and correlation type. Based on the analysis of the state of the art on 3D graphics compression approaches, we propose a set of processing units. We show how this set can be configured/connected into a network, including hardware networks, to obtain reference decoders. Moreover, the network can be reconfigured at runtime, based on information that is provided with the encoded object. This modular concept of functional units, allows optimized management of computation (such as identification of parallelizable functions or functions that are suitable for acceleration) relative to the hardware architecture (CPU, GPU, FPGA, etc.). In the four decoders presented, at least half of the FUs are being reused at least once. The results were performed by generating and compiling C code from RVC-CAL code and comparing the results with the MPEG reference software implementation. The FUs described in this paper were standardized by MPEG as part of the ISO/IEC 23001-4
BULBUL Abdullah, CAPIN Tolga, LAVOUÉ Guillaume, PREDA Marius
Assessing visual quality of 3-D polygonal models : evaluating and discussing existing metric performance. IEEE signal processing magazine, november 2011, vol. 28, n° 6, pp. 80-90
abstract
Recent advances in evaluating and measuring the perceived visual quality of three-dimensional (3-D) polygonal models are presented in this article, which analyzes the general process of objective quality assessment metrics and subjective user evaluation methods and presents a taxonomy of existing solutions. Simple geometric error computed directly on the 3-D models does not necessarily reflect the perceived visual quality; therefore, integrating perceptual issues for 3-D quality assessment is of great significance. This article discusses existing metrics, including perceptually based ones, computed either on 3-D data or on two-dimensional (2-D) projections, and evaluates their performance for their correlation with existing subjective studies.
JOO Sanghyun , PREDA Marius, GELISSEN Jean
MPEG V and RoSE：a framework for multimedia rich experience, and its first implementation for sensory effects. Journal of IEICE (Electronics, Communications & Computer Sciences), march 2010, vol. 93, n° 3, pp. 245-250
abstract
Motivated by recent trends in technologies development related to multi-sensorial experience together with the democratization of virtual worlds MPEG started a new standard called Media Context and Control and abbreviated MPEG-V. The new standard is composed of four parts-Architecture, Control Information, Sensory Information, Avatar Information. In order to address the specific application of multi-sensorial experience, we implemented the RoSE (representation of sensory effects) framework that provides sensory effects to users by associating multimedia of various sensory devices. The framework contains four work items: SE (Sensory Effects), USP (User Sensory Preferences), SDC (Sensory Device Capabilities), and SDCom (Sensory Device Commands). These items are standardized in part 2 and part 3 of MPEG-V In this paper we review the MPEG-V activities and describe the RoSE framework
JOVANOVA Blagica, ARSOV Ivica, PREDA Marius, PRETEUX Francoise
Online animation system for practicing cued speech. International journal of image and graphics (IJIG), october 2010, vol. 10, n° 4, pp. 497-512
abstract
This paper presents a set of information and communication technologies developed with the goal to improve the practice of cued speech. They are based on three-dimensional (3D) graphics and are covering the entire end-to-end content chain: production, transmission, and visualization. Starting from defining a set of potential applications, the requirements of the targeted system for cued speech are set. The research and development path takes into account high-quality animation, real-time constraints, personalization, user acceptability and, equally important, the easiness and feasibility of the deployment. The latter led to a strong orientation toward open standards. The original components of the system include 3D graphics and animation encoders, streaming servers, and visualization engines. The core technology is validated in two real-time applications: a web service for text to animation conversion and a chat service supporting two or more users.
PREDA Marius, ARSOV Ivica, MORAN BURGOS Francisco
COLLADA + MPEG-4 OR X3D + MPEG-4. IEEE vehicular technology magazine, march 2010, vol. 5, n° 1, pp. 39-47
abstract
The paper is an overview of 3D graphics assets and applications standards.The authors analyzed the three main open standards dealing with three-dimensional (3-D) graphics content and applications, X3D, COLLADA, and MPEG4, to clarify the role of each with respect to the following criteria: ability to describe only the graphics assets in a synthetic 3-D scene or also its behavior as an application, compression capacities, and appropriateness for authoring, transmission, and publishing. COLLADA could become the interchange format for authoring tools; MPEG4 on top of it (as specified in MPEG-4 Part 25), the publishing format for graphics assets; and X3D, the standard for interactive applications, enriched by MPEG-4 compression in the case of online ones. The authors also mentioned that in order to build a mobile application, a developer has to consider different hardware configurations and performances, different operating systems, different screen sizes, and input controls.
RODRÍGUEZ DONCEL Víctor, DELGADO Jaime, CHIARIGLIONE Filippo , PREDA Marius, TIMMERER Christian
Interoperable digital rights management based on the MPEG extensible middleware. Multimedia tools and applications, april 2010, pp. 1-16
abstract
This paper describes an interoperable Digital Rights Management architecture promoted by the MPEG standardization group in its new standard known as MPEG-M or MPEG Extensible Middleware (MXM). The goal of this standard is to promote the packaging and reusability of MPEG technologies, and for this it specifies a software middleware platform and a complete set of APIs and protocols. These APIs allow uniformly handling digital content and developing generic multimedia applications, through a set of modules communicated with standard protocols. The MXM standard provides the necessary mechanisms to digitally manage the rights over Intellectual Property, the tools to protect the media and the means to grant the rights enforcement, besides a rich set of libraries to reproduce the content.
TIMMERER Christian , CHIARIGLIONE Filippo , PREDA Marius, RODRÍGUEZ DONCEL Víctor
Accelerating the media business with MPEG extensible middleware. IEEE multimedia, july 2010, vol. 17, n° 3, pp. 74-78
abstract
The development of successful multimedia applications is becoming a challenging task due to short deployment cycles and the huge amount of applications flooding the market. One major problem that the multimedia industry is facing in this area is the heterogeneity of the content-delivery chain. The classic model in which all the components, such as the authoring, distribution, and playback, were known in advance, has now evolved into an interconnected network of programmable processing units that are no longer dedicated and built for one purpose
JOVANOVA Blagica, PREDA Marius, PRETEUX Francoise
The role of interoperability in virtual worlds, analysis of the specific cases of avatars. Journal of virtual worlds research, october 2009, vol. 2, n° 3, pp. 4-19
URL: https://journals.tdl.org/jvwr/index.php/jvwr/article/view/672/508
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abstract
In this paper we present current trends in several activities related to avatars. We provide a detailed survey of research literature for avatar appearance modeling, deformation control, and animation. We also introduce several standards, recommendations, and markup languages treating different aspects of avatars from visual representation to communication capabilities. Finally, we shortly introduce the current developments of MPEG-V related to avatars, a recent MPEG standard aiming to provide an interchange format for virtual worlds.
JOVANOVA Blagica, PREDA Marius, PRETEUX Francoise
MPEG-4 Part 25 : a graphics compression framework for XML-based scene graph formats. Signal processing : image communication, january 2009, vol. 24, n° 1-2, pp. 101-114
abstract
This paper introduces a new model for applying 3D graphics compression to arbitrary scene graphs, recently adopted by MPEG in Part 25 of the MPEG-4 standard. The goal of the model is twofold: to liberate the powerful MPEG compression techniques from the scene graph representation based on BIFS and to position the compression as a transparent layer in the 3D graphics chain, thus making it easy to integrate in third party authoring tools or end-user applications. In addition, intrinsic features of the compression tools such as progressive decoding or streaming are preserved. Currently implemented on top of COLLAborative Design Activity (COLLADA) and eXtensible 3D (X3D), the proposed model will leverage the deployment of MPEG-4 compression for 3D graphics. The software implementation, publicly available under ISO license, is introduced and reports and analyses of the compression results on large database are outlined in the document.
PREDA Marius, VILLEGAS Paulo, MORAN BURGOS Francisco, LAFRUIT Gauthier, BERRETTY Robert-Paul
A model for adapting 3D graphics based on scalable coding, real-time simplification and remote rendering. Visual computer, october 2008, vol. 24, n° 10, pp. 881-888
abstract
Most current multi-player 3D games can only be played on dedicated platforms, requiring specifically designed content and communication over a predefined network. To overcome these limitations, the OLGA (On-Line GAming) consortium has devised a framework to develop distributive, multi-player 3D games. Scalability at the level of content, platforms and networks is exploited to achieve the best trade-offs between complexity and quality.
Communication dans une conférence à comité de lecture (69)
LAFRUIT Gauthier, SCHENKEL Arnaud, TULVAN Christian Liviu, PREDA Marius, YU Lu
MPEG-I coding performance in immersive VR/AR applications. IBC 2018 Conference , IBC, 13-18 september 2018, Amesterdam, Netherlands, 2018, pp. 1-9
URL: https://www.ibc.org/download?ac=6562
abstract
After decennia of developing leading-edge 2D video compression technologies, MPEG is currently working on the new era of coding for Immersive applications, referred to as MPEG-I. It ranges from 360-degree video with head-mounted displays to free navigation in 3D space, with head-mounted and 3D light field displays. Two families of coding approaches, covering typical industrial workflows, are currently considered for standardisation - Multiview + Depth Video Coding and Point Cloud Coding - both supporting high-quality rendering at bitrates of up to a couple of hundreds of Mbps. This paper provides a technical/historical overview of the acquisition, coding and rendering technologies considered in the MPEG-I standardization activities
KIM Jounghyun Gerard , ROYAN Jerome, PREDA Marius
Standards for mixed and augmented reality. ISMAR 2017 : IEEE International Symposium on Mixed and Augmented Reality, Los Alamitos : IEEE Computer Society, 09-13 october 2017, Nantes, France, 2017, pp. 252-252, ISBN 978-0-7695-6327-5
abstract
A complete record of the workshop was not made available for publication as part of the conference proceedings. Mixed and augmented reality (MAR) is on the brink of large-scale consumer level commercialization. Standards will be required for MAR to succeed and proliferate as an information media and new contents platform. Standards will enable the development of MAR system components able to interoperate through defined interfaces and hence will enable the development of end-to-end solutions built on system components easily plugged in together to achieve contents sharing and interoperability. The workshop will be a place to present existing standards and demonstrate how they could ease the adoption of MAR in many domains, a place to present recent initiatives in order to coordinate efforts and share requirements coming from the industry. The discussion will lay a foundation to many issues of standardization for MAR: proper subareas for standards and abstract levels, physical and environment object representation, content file format, calibration process, tracking and recognition, augmentation and display style standards, sensors and processing units dedicated to MAR, standards for nonvisual and multimodal augmentation, object feature presentation, benchmarking, Industry requirements, etc.
LEHIANI Yassine, MAIDI Madjid, PREDA Marius, GHORBEL Faouzi
Image invariant description based on local Fourier-Mellin transform. ICSIPA 2017 : IEEE International Conference on Signal and Image Processing Applications, Los Alamitos : IEEE Computer Society, 12-14 september 2017, Kuching, Malaysia, 2017, pp. 159-163, ISBN 978-1-5090-5559-3
abstract
In this paper, we present a novel approach for real-time object identification on a mobile platform. First, our system detects keypoints within a scaled pyramid-based FAST detector and then descriptors of the object of interest are computed using an Analytical Fourier-Mellin transform. The Fourier-Mellin is used in similarity studies due to its invariance property and discrimination power. In this approach, we exploited information from the phase of Fourier Transform instead of magnitude applied on patches. The phase carries more information and handle, particularly, rotation and light changes. Finally, experiments are conducted to evaluate the system performances in terms of accuracy, robustness and computational efficiency as well
AFFES Maroua, MEZIOU Malek Sellami, LEHIANI Yassine, PREDA Marius, GHORBEL Faouzi
A content-based watermarking scheme based on Clifford Fourier transform. VISIGRAPP 2016 : 11th Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications, Scitepress, 27-29 february 2016, Rome, Italy, 2016, pp. 372-378, ISBN 978-989-758-175-5
abstract
In this paper, we propose a new watermarking method based on Harris interest points and Fourier Clifford Transform. We employed Harris detector to select robust interest points and to generate some non-overlapped circular interest regions. Each region was transformed into Clifford Fourier domain and the watermark was embedded into the Clifford transform coefficients magnitude. Experimental results show the robustness of the proposed method against JPEG compression
LAVRIC Traian, SCURTU Veronica, PREDA Marius
Overview of MPEG AR Application Format (ARAF). ISMAR 2016 : 15th International Symposium on Mixed and Augmented Reality Workshop, 19-23 september 2016, Merida, Mexico, 2016
abstract
In this paper, we present an overview of MPEG technologies related to AR and the MPEG vision on AR. We present in detail the MPEG ARAF design principles and the main features
SCURTU Veronica, LAVRIC Traian, PREDA Marius
Authoring augmented reality experiences. ISMAR 2016 : 15th International Symposium on Mixed and Augmented Reality Workshop, IEEE, 19-23 september 2016, Merida, Mexico, 2016, pp. 1-9
URL: https://dxp.korea.ac.kr/ismar2016-workshop-standards/4_ISMAR_paper_ARAF_Scurtu_v2.pdf
abstract
With the recent advances being made in the mobile devices technologies and in their processing power, more complex and real-time computations are now possible. This rapid growth is providing Augmented Reality (AR) applications with a suitable platform for its mass usage. Until recently, most of the AR applications were limited to location-based and navigations applications. Currently, with the evolutions in the mobile computing field and in image processing technologies, a new and wider range of AR applications emerged. In this paper, we present a brief overview of the AR field and of the different possibilities for creating AR applications. We discuss the advantages and disadvantages of building stand-alone AR applications or building a generic AR browser. After presenting the most significant open standard and proprietary formats for AR, this paper introduces a new solution for creating AR content. It consists of a platform exploiting an emerging ISO standard, called Augmented Reality Application Format (ARAF) consisting in an authoring tool that allow users to create AR experiences without requiring any programming skills and in an AR browser running on mobile devices
LEHIANI Yassine, PREDA Marius, MAIDI Madjid, GABRIELLI Mircea Adrian
Object recognition in extended image databases using a mobile client-server architecture. ICSIPA 2015 : International Conference on Signal and Image Processing Application, IEEE, 19-21 october 2015, Kuala Lumpur, Malaysia, 2015, pp. 197-202, ISBN 978-1-4799-8996-6
abstract
This paper presents a novel approach for object recognition in extended image databases using a mobile client server architecture. The proposed approach relies upon feature detection and description to characterize textured objects within the image. The similarity search is performed on descriptor arrays by computing the distance between the query descriptor compared with reference descriptors extracted offline. The key contributions of the approach are the high accuracy, the time-effectiveness and the scalability of the method towards large image datasets. The developed method is first, integrated on a mobile platform and, then, deployed on a client server architecture to deal with high volume image galleries. Experiments are performed to evaluate the performances of the system in real-life environment conditions and the obtained results demonstrate the relevance of the proposed approach
LEHIANI Yassine, PREDA Marius, MAIDI Madjid, GHORBEL Faouzi
Object identification and tracking for steady registration in mobile augmented reality. ICSIPA 2015 : International Conference on Signal and Image Processing Application, IEEE, 19-21 october 2015, Kuala Lumpur, Malaysia, 2015, pp. 54-59, ISBN 978-1-4799-8996-6
abstract
This paper presents a novel approach for object identification and steady tracking in mobile augmented reality applications. First, the system identifies the object of interest using the KAZE algorithm. Then, the target tracking is enabled with the optical flow throughout the camera instant video stream. Further, the camera pose is determined by estimating the key transformation relating the camera reference frame according to the world coordinate system. Therefore, the visual perception is augmented with 3D virtual graphics overlaid on target object within the scene images. Finally, experiments are conducted to evaluate the system performances in terms of accuracy, robustness and computational efficiency as well
LEHIANI Yassine, SCURTU Veronica, PREDA Marius, GHORBEL Faouzi
Reconnaissance de formes par les descripteurs compacts dans les bases d'images évolutives. TAIMA 2015 : 9e édition des ataliers de travail sur le Traitement et Analyse de l'Information Méthodes et Application, 11 mai - 16 février 2015, Hammamet, Tunisie, 2015
abstract
Dans cet article, nous proposons une méthode pour la reconnaissance de formes sous une plateforme mobile Android. L'objet d'intérêt est présenté par un ensemble de descripteurs calculés à partir de points caractéristiques. Les descripteurs sont comparés avec un ensemble de donnés de références. La fonction d'appariement conçu est optimisée pour faire face aux limites matérielles des téléphones portables tout en gardant un bon taux de reconnaissance en temps réel. Les expérimentations réalisées ont montré l'efficacité et le véritable intérêt de l'approche proposée
MESSINA Alberto, MORAN BURGOS Francisco, PREDA Marius, LEPSOY Skjalg, BOBER Miroslaw , BERTOLA Davide, PASCHALAKIS Stavros
Making second screen sustainable in media production: the BRIDGET approach. TVX 2015 : International Conference on Interactive Experiences for TV and Online Video, New York : ACM, 03-05 june 2015, Brussels, Belgium, 2015, pp. 155-160, ISBN 978-1-4503-3526-3
abstract
This paper presents work in progress of the European Commission FP7 project BRIDGET "BRIDging the Gap for Enhanced broadcasT". The project is developing innovative technology and the underlying architecture for efficient production of second screen applications for broadcasters and media companies. The project advancements include novel front-end authoring tools as well as back-end enabling technologies such as visual search, media structure analysis and 3D A/V reconstruction to support new editorial workflows
KIM Sang Kyun, PREDA Marius
MPEG-V international standard and the internet of things. SIT 2014 - FIT 2014 : International Conference on Software Intelligence Technologies and Applications & International Conference on Frontiers of Internet of Things, IET, 04-06 december 2014, Hsinchu, Taiwan, Province Of China, 2014, pp. 166-173, ISBN 978-1-84919-970-4
abstract
The Internet of Things (IoT) has captured the attention of industry as the impetus of new growth. For the successful industrial deployment of Internet of Things services, it is important to provide a standardized means of describing "Things." MPEG (ISO/IEC SC29 WG11) developed several standards related to sensors, actuators, and multimedia platforms that can address some of the interoperability problems related to the Internet of Things. In particular, there are several commonalities between the Internet of Things and the terms defined in MPEG-V standards (e.g., sensors, actuators, intelligent engines, adaptation). In this paper, brief summaries of MPEG-V International Standards are given, along with their overall architecture. The relationship between media-related-IoT and MPEG-V is also explained, with usage scenarios, the XML syntax used, and examples
MAIDI Madjid, PREDA Marius, LEHIANI Yassine
Markerless identification and tracking for scalable image database. ICIP 2014 : 21th IEEE International Conference on Image Processing, IEEE, 27 october - 30 december 2014, Paris, France, 2014, pp. 1-6, ISBN 978-1-4799-5751-4
abstract
In this paper we present a novel approach for object identification and tracking in large image datasets. Objects of interest are represented by feature points and descriptors extracted and compared to a set of reference data. An optimized matching paradigm is designed to deal with scalable image databases while keeping a good recognition rate in real-life environment conditions. Experiments are conducted to evaluate the effectiveness of the method and the obtained results demonstrate a true interest of the proposed approach
MAIDI Madjid, PREDA Marius, LEHIANI Yassine, LAVRIC Traian
Vision-based tracking in large image database for real-time mobile augmented reality. MMSP 2014 : 16th IEEE International Workshop on Multimedia Signal Processing, IEEE, 22-24 september 2014, Jakarta, Indonesia, 2014, pp. 1-6, ISBN 978-1-4799-5896-2
abstract
This paper presents an approach for tracking natural objects in augmented reality applications. The targets are detected and identified using a markerless approach relying upon the extraction of image salient features and descriptors. The method deals with large image databases using a novel strategy for feature retrieval and pairwise matching. Further-more, the developed method integrates a real-time solution for 3D pose estimation using an analytical technique based on camera perspective transformations. The algorithm associates 2D feature samples coming from the identification part with 3D mapped points of the object space. Next, a sampling scheme for ordering correspondences is carried out to establishing the 2D/3D projective relationship. The tracker performs localization using the feature images and 3D models to enhance the scene view with overlaid graphics by computing the camera motion parameters. The modules built within this architecture are deployed on a mobile platform to provide an intuitive interface for interacting with the surrounding real world. The system is experimented and evaluated on challenging scalable image dataset and the obtained results demonstrate the effectiveness of the approach towards versatile augmented reality applications
PEREY Christine , MANSON Rob, PREDA Marius, TREVETT Neil, LECHNER Martin, PERCIVALL George , ENGELKE Timo , LEFKIN Peter, MAHONE Bruce, NIELSEN Mary Lynne
Open and interoperable augmented reality. ISMAR 2014 : International Symposium on Mixed and Augmented Reality, IEEE, 10-12 september 2014, Munich, Germany, 2014, pp. 1-3
abstract
Today an experience developer must choose tools for authoring AR experiences based on many factors including ease of use, performance across a variety of platforms, reach and discoverability and cost. The commercially viable options are organized in closed technology silos (beginning with SDKs). A publisher of experiences must choose one or develop for multiple viewing applications, then promote one or more application to the largest possible audience. Developers of applications must then maintain the customized viewing application over time across multiple platforms or have the experience (and the application) expire at the end of a campaign
ROCHER Pierre Olivier, GRAVIER Christophe, SUBERCAZE Julien, PREDA Marius
Video stream transmodality. ICEIS : 16th International Conference on Enterprise Information Systems, Springer, 27-30 april 2014, Lisbon, Portugal, 2014, vol. 227, pp. 361-378, ISBN 978-3-319-22347-6
abstract
Transmodality is the partitioning of an image into regions that are expected to present a better entropy using different coding schemes, depending on their structural density, at constant bandwidth. In this paper we present the transmodality of video stream. Our contribution is a transmoder module that includes various different optimized video codecs and implements the concept of transmodality on a set of video streams. We evaluate our proposal with different kinds of video (in content term), and our algorithm shows comprehensive. results by saving up to 8% of bandwidth for the same PSNR in comparison with the state-of-the-art video encoding baselines
MAIDI Madjid, PREDA Marius, DAILEY Matthew N., KONGSILP Sirisilp
Natural feature tracking on a mobile handheld tablet . ICSIPA2013 : International Conference on Signal and Image Processing Applications , Los Alamitos : IEEE Computer Society, 08-10 october 2013, Melaka, Malaysia, 2013, pp. 246-251, ISBN 978-1-4799-0269-9
abstract
This paper presents a natural feature tracking system for object recognition in real-life environments. The system is based on a local keypoint descriptor method optimized and adapted to extract salient regions within the image. Each object in the gallery is characterized by keypoints and corresponding local descriptors. The method first identifies gallery object features in new images using nearest neighbor classification. It then estimates camera pose and augments the image with registered synthetic graphics. We describe the optimizations necessary to enable real-time performance on a mobile tablet. An experimental evaluation of the system in real environments demonstrates that the method is accurate and robust
MAIDI Madjid, PREDA Marius
Interactive media control using natural interaction-based Kinect. ICASSP : 38th IEEE International Conference on Acoustics, Speech, and Signal Processing, Los Alamitos : IEEE Computer Society, 26-31 may 2013, Vancouver, Canada, 2013, pp. 1812-1815, ISBN 978-1-4799-0356-6
abstract
In this work we present a novel interaction approach based on a gesture recognition system using a Microsoft Kinect sensor. Gestures are defined and interpreted in order to activate controls on a media device. This natural interface enables intuitive interaction with the multimedia content. The depth sensor observes the scene to detect a request for control in the form of a gesture. Then, the application assigns a control for the media system. The application is tested under various scenarios and proved the reliability and the effectiveness of the proposed approach.
JAILLY Benjamin, GRAVIER Christophe, SUBERCAZE Julien, PREDA Marius, FAYOLLE Jacques
Whispering interactions to the end user using rules . RULEML 2012 : 6th International Web Rule Symposium, Berlin Heidelberg : Springer-Verlag, 27-29 august 2012, Montpellier, France, 2012, pp. 208-214, ISBN 978-3-642-32688-2
abstract
The issue of e-Maintenance, i.e. the remote maintenance of devices, is more and more important as the loose-coupling between center of competencies and productions sites is increasing. Maintenance operators have to know procedures for all devices they are in charge of. Whispering possible interactions to operators when they operate could ease their task and increase their productivity. In this paper, we propose to model maintenance procedures (therefore sequences of actions of human operators) using the Semantic Web standards. The system can infer the possible next actions from the human operator, and assist him by suggesting the next operation steps. An analysis of the use's trace is also proposed in order to hint operators on improvements in his processes
MORENO ALCERRECA Christina, TIZON Nicolas, PREDA Marius
Mobile cloud convergence in GaaS : a business model proposition. HICSS-45 '12 : Hawaii International Conference on System Sciences, IEEE, 04-07 january 2012, Maui, Hawaii, United States, 2012, pp. 1344-1352, ISBN 978-1-4577-1925-7
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abstract
The two most important drivers of today's telecommunication market are the development of mobile services and cloud computing. These two trends converge in cloud mobile services what is called cloud gaming. The challenges of delivering mobile cloud applications are not only on the technical side, they also concern the implementation of the accurate business model. The Kusanagi project is an end-to-end infrastructure to deliver Gaming as a Service (GaaS). This paper proposes the construction of a Business Model based on the presentation of a Cloud gaming project intended to evolve with the maturation of the technology and its market.
JAILLY Benjamin, GRAVIER Christophe, PREDA Marius, FAYOLLE Jacques
Interactive mixed reality for collaborative remote laboratories. MTDL '11 : International ACM Workshop on Multimedia Technologies for Distance Learning, New-York : ACM, 01 december 2011, Scottsdale, Arizona, United States, 2011, pp. 1-6, ISBN 978-1-4503-0994-3
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abstract
In distance learning, remote laboratories (henceforth RLabs), allow students to perform real-time tasks on laboratories over the Internet. However, existing tele-operations systems suffer from both the low fidelity of the representation of the remote site that hosts the instrument, and the lack of "group awareness" for collaborative learning during online hands-on sessions. In this paper, we discuss how Mixed Reality systems can improve the fidelity of such remote devices and how group awareness can be achieved. A software architecture for collaborative mixed reality for RLabs based on the MPEG-4 BInary Format for Scenes (MPEG-4 BIFS) is also presented.
JAILLY Benjamin, GRAVIER Christophe, PREDA Marius, FAYOLLE Jacques
Interactive multimedia for engineering tele-operations. StreamComm '11 : IEEE Workshop on Streaming and Media Communications, 11 july 2011, Barcelone, Spain, 2011
abstract
Online Engineering allows users to perform tele-operation over the Internet. It is used in collaboratories, distance learning curriculum, and remote maintenance processes. Tele-operation over the Internet is however restrained by the development time and cost of ad hoc solutions. These solutions a) are hardly reusable, b) present a low fidelity of the human computer interface, and c) barely enable pervasive accesses standalone clients or Web forms). We present in this paper a novel approach for building teleoperation Human Computer Interfaces based on interactive multimedia. The end-user commands the remote device using interactive elements in the multimedia interface. The feedback information is seen as a combination of natural video content, produced by an IP camera capturing the instrument and synthetic graphics corresponding to elements of the device input interface (control panel). The proposed architecture fosters the reuses and gives a high level of interoperability between command terminals, since the interface can be displayed in any terminal able to lay out multimedia content.
JOVANOVA Blagica, ARSOV Ivica, CONAN Denis, DOAN Tuan Anh, OZANNE Alain, PREDA Marius
Mobile mixed reality games creator based on MPEG-4 BIFS. ICME '11 : IEEE International Conference on Multimedia and Expo, IEEE Computer Society, 11-15 july 2011, Barcelona, Spain, 2011, pp. 1-4, ISBN 978-1-61284-348-3
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abstract
In this paper, we propose an authoring tool for creating mobile mixed reality games (MMRGs), referred to as M2RGC (Mobile Mixed Reality Game Creator). Goal is to transform the game creation process in a task that is as interesting as playing the game itself. Therefore we offer a user-friendly interface through which different MMRGs can be created by defining the objects used in the game, their behavior and interaction with sensors (e.g. GPS, compass). The tool itself uses the power of MPEG-4 BIFS[1] capabilities, such as the possibility of grouping multimedia assets in a scene. We build a wrapper over these MPEG-4 BIFS functionalities allowing anyone to discover the experience of MMRGs creation. Concerning the client runtime for playing the game on mobile phones, we deploy a MPEG-4 player on the Windows Mobile and Android platforms.
MAIDI Madjid, PREDA Marius, LE Van Hung
Markerless tracking for mobile augmented reality. ICSIPA '11 : International Conference on Signal and Image Processing Applications, IEEE, 16-18 november 2011, Kuala Lumpur, Malaysia, 2011, pp. 301-306, ISBN 978-1-4577-0243-3
abstract
This work aims to realize a recognition system for markerless tracking in mobile augmented reality. A method based local invariant descriptors is implemented to extract image feature points for natural fiducial identification. This technique is optimized and adapted for a mobile architecture with low resources and deployed on a portable device. Afterwards, a hybrid approach of camera pose estimation is proposed to augment real images with virtual graphics. Experiments and many evaluations are conducted to demonstrate the relevance of the proposed approach. This study enabled to overcome some identification issues for markerless tracking in mobile augmented reality environments.
MAIDI Madjid, SCURTU Veronica, PREDA Marius
Characters identification in TV series. ISM '11 : The IEEE International Symposium on Multimedia, IEEE, 05-07 december 2011, Dana Point, Ca , United States, 2011, pp. 143-148, ISBN 978-1-4577-2015-4
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abstract
This work aims to realize a recognition system for a software engine that will automatically generate a quiz starting from a video content and reinsert it into the video, turning thus any available foreign-language video (such as news or TV series) into a remarkable learning tool. Our system includes a face tracking application which integrates the eigen face method with a temporal tracking approach. The main part of our work is to detect and identify faces from movies and to associate specific quizzes for each recognized character. The proposed approach allows to label the detected faces and maintains face tracking along the video stream. This task is challenging since characters present significant variation in their appearance. Therefore, we employed eigen faces to reconstruct the original image from training models and we developed a new technique based on frames buffering for continuous tracking in unfavorable environment conditions. Many tests were conducted and proved that our system is able to identify multiple characters. The obtained results showed the performance and the effectiveness of the proposed method.
SCURTU Veronica, HO Vi Dai, PREDA Marius, DANG Catherine
Audiovisual descriptors for a linguistic educational engine. MUE '11 : The 5th FTRA International Conference on Multimedia and Ubiquitous Engineering, IEEE Computer Society, 28-30 june 2011, Loutraki, Crète, Greece, 2011, pp. 107-112, ISBN 978-0-7695-4470-0
abstract
The media consumption has become more individualized and customized due to the development of digital media and of more efficient portable devices. Among other fields, linguistic learning may benefit greatly from this trend if new types of content are created, specifically for the requirements of this new generation of learners, suitable for individual usage, portable, customized, flexible, interactive and entertaining. In this paper we present a solution that has its roots in the Edutainment (Education and entertainment) field and consists in automatically generating language comprehension quizzes based on foreign-language audiovisual content (TV series, documentaries, news). The proposed approach turns any foreign-language video into a true interactive teaching material, by combining different fields of expertise, such as video analysis and meta-data extraction, information search and automatic language processing.
TIZON Nicolas, MORENO ALCERRECA Christina, CERNEA D. Mihai, PREDA Marius
MPEG-4-based adaptive remote rendering for video games. Web3D '11 : 16th International Conference on 3D Web Technology, New-York : ACM, 20-22 june 2011, Paris, France, 2011, pp. 45-50, ISBN 978-1-4503-0774-1
abstract
This paper proposes a complete framework for remote rendering of 3D and complex 2D applications. The retained approach is based on standardized video encoding and interactivity streaming methods and was developed within the framework of the Kusanagi project. The complete architecture of the gaming platform is described and especially we have developed an advanced "lobby server" which acts as an interface between the users and the applications and manages the resources sharing. This server component is also designed in order to build a strongly pervasive environment allowing users to run their 3D applications everywhere and on every device. In this perspective, the MPEG-4 format support is one of the main features that permits to diffuse easily and rapidly our solution. In addition, our gaming platform has been tested by a panel of beta testers. The users experience feedbacks are summarized and give relevant information for the future works. To improve the adaptability of our system, an optimized encoding an streaming method is proposed and the simulation results show that we can significantly improve the user QoE without adding complexity on the server side.
TIZON Nicolas, MORENO ALCERRECA Christina, PREDA Marius
ROI based video streaming for 3D remote rendering. MMSP '11 : IEEE 13th International Workshop on Multimedia Signal Processing, IEEE, 17-19 october 2011, Hangzhou, China, 2011, pp. 1-6, ISBN 978-1-4577-1432-0
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abstract
This paper proposes a low computational method to perform ROI (Region Of Interest) based video encoding and adaptive streaming for remote rendering applications. The main objective of the proposed solution is to minimize the latency in the interactive loop even when facing poor transmission conditions. In order to do that, the knowledge of the depth map information provided by the rendering engine is exploited by the real-time video encoder to adapt the bitrate of the transmitted stream. Especially, thanks to an efficient coupling between the rendering and the video encoding stages, the macroblocks of each video frame are encoded with different quantization steps that follow an ROI partitioning. The details of this partitioning algorithm are provided as well with some implementation considerations. The simulation results demonstrate the benefit of our adaptive approach from the user experience point of view.
ARSOV Ivica, JOVANOVA Blagica, PREDA Marius, PRETEUX Francoise
When MPEG-4 and COLLADA meet for a complete solution of distributing and rendering 3D graphics assets. ICCE 2010 : International Conference on Consumer Electronics, IEEE, 09-13 january 2010, Las Vegas, United States, 2010, pp. 431-432, ISBN 978-1-4244-4314-7
abstract
In this paper we present an implementation of a 3D graphics player showing for a first time worldwide a successful integration between COLLADA, a standard for representing 3D graphics assets, and MPEG-4, a standard for compression and delivery of the assets
JOVANOVA Blagica, PREDA Marius
Avatars interoperability in virtual worlds. MMSP 2010 : IEEE International Workshop on Multimedia Signal Processing, IEEE, 04-06 october 2010, Saint Malo, France, 2010, pp. 263-268, ISBN 978-1-4244-8110-1
abstract
This paper presents a survey on current trends in several technologies related to avatars and introduces a new solution for interoperability of avatars in Virtual Worlds. A short examination of several standards, recommendations, markup languages and VWs presentation definitions addressing different aspects of avatars are provided. As a result of this analysis, a new standard, called MPEG-V, aiming to provide an interchange format for virtual worlds is presented.Providing the container of avatar properties/capabilities is the vision of MPEGV. By its descriptive format it aims to facilitate the deployment of VW recognizing that their success depends on maintaining acceptable development cost and one mechanism in doing so consists in ensuring interoperability between them at least at the level of avatars
KHAN Abdul Malik, ARSOV Ivica, PREDA Marius, CHABRIDON Sophie, BEUGNARD Antoine
Adaptable client-server architecture for mobile multi-player games. DISIO '10 : DIstributed SImulation & Online gaming, 15-15 march 2010, Torremolinos, Malaga, Spain, 2010, ISBN 78-963-9799-87-5
abstract
Most of the multiplayer games available online are based on a client-server architecture because this architecture gives better administration control to the game providers. Besides controlling the account and payment information of the players, this architecture also prevents players from cheating as all the game logic is executing on the centralized server. We proposed a server assisted approach for mobile games in [2]. However, because of the varying and high latency of wireless networks and of the changing consistency requirements during the game play, it is difficult to keep the user experience highly interactive in client-server architecture. This paper presents an adaptive hybrid client-server architecture which changes its behavior according to network and game environment variations to improve game state consistency across different mobile terminals. The server applies consistency mechanism on its side, as in the traditional client-server architecture and dynamically switches to apply a client side consistency mechanism when inconsistencies occur at the client side because of the change in network conditions and/or game requirements. We have evaluated our approach on a car racing game. The results show that we can obtain an improved global consistency under a high and varying latency network using our dynamically adaptable approach.
ARSOV Ivica, JOVANOVA Blagica, PREDA Marius, PRETEUX Francoise
On-line animation system for learning and practice Cued Speech. ICT Innovations 2009 Conference, Berlin; Heidelberg : Springer-Verlag, 28-29 september 2009, Ohrid, Macedonia, 2009, pp. 315-325, ISBN 978-3-642-10780-1
abstract
This paper presents a set of information and communication technologies developed with the goal to improve the learning and practice of Cued Speech. They are based on 3D graphics and are covering the entire end-to-end content chain: production, transmission and visualization. Starting from the requirements of an online system for Cued Speech, the research and development path took into account real-time constraints, personalization, user acceptability and equally important, the easiness and feasibility of the deployment, hence a strong orientation towards open standards. The original components of the system include 3D graphics and animation encoders, streaming servers and visualization engines. We validated them in two applications: a web service for text to animation conversion and a chat service supporting two or more users
JOVANOVA Blagica, PREDA Marius, PRETEUX Francoise
Auto-production 3D graphics content for mobile communication. ICT Innovations 2009 Conference, Berlin; Heidelberg : Springer-Verlag, 28-29 september 2009, Ohrid, Macedonia, 2009, pp. 305-313, ISBN 978-3-642-10780-1
abstract
In this paper we present a new mobile service that enable auto-production of 3D graphics content for mobile platform. The general benefit of this service is that it enriches the content of the communication, containing a video stream of an animated avatars produced by dedicated servers controlled by the mobile end-user. The approach consists in selecting an avatar, download it on the mobile phone as a 3D object and composing the message by playing with avatar instead of typing text. Message can be enriched more by adding background to the scene and subtitles for animation sub-sequences. The tests performed show the feasibility of the proposed solution in terms of transmission cost
ARSOV Ivica, PREDA Marius, PRETEUX Francoise
MPEG-4 3D graphics for mobile phones. WMMP 2008 : 1st International Workshop on Mobile Multimedia Processing , Springer, 07-07 december 2008, Tampa, Florida, United States, 2008, pp. 172-176, ISBN 978-3-642-12348-1
abstract
In this paper we present a first implementation of an MPEG-4 based solution for visualizing 3D graphics data on mobile phone. We analyze the player performances with respect to the decoding time and rendering frame-rate. More than only visualizing 3D data from MPEG-4 files, we extend the player for visualizing complex content such the one presented in games. The main idea consists in using a remote server for the game logic and to update the local 3D graphics scene by using standard commands. Thus, we demonstrate that by using a standard player (that in the near future can be natively built in the mobile device) it is possible to address in an optimized manner both visualization of 3D data and mobile games
JOVANOVA Blagica, PREDA Marius, PRETEUX Francoise
MPEG-4 Part 25 : a generic model for 3D graphics compression. 3DTV-CON 2008 : The True Vision Capture, Transmission and Display of 3D Video, IEEE, 28-30 may 2008, Istanbul, Turkey, 2008, pp. 101-104, ISBN 978-1-4244-1755-1
abstract
This paper introduces a new model for 3D graphics compression, recently adopted by MPEG community in the Part 25 of the MPEG-4 standard. The model makes possible to use MPEG-4 compression on top of a third party XML description, facilitating its deployment. Now, the compression and transmission layer, ensured by MPEG-4, is better integrated with the production to consumption chain. The paper reports and analyzes the compression results when using the proposed model
LE BONHOMME Benoit, MUSTAFA Blerim, CELAKOVSKY Sasko, PREDA Marius, PRETEUX Francoise, DAVCEV Danco
On-line and open platform for 3D object retrieval. 3DOR 2008 : 1st Eurographics conference on 3D Object Retrieval, Aire-la-Ville : Eurographics Association, 15-15 april 2008, Crete, Greece, 2008, pp. 73-79, ISBN 978-3-905674-05-7
abstract
In this paper we present the MyMultimediaWorld Internet-based platform designed to benchmark descriptors and description scheme for 3D object retrieval purpose. Relying on the MPEG-4 and MPEG-7 multimedia standards for data representation and description respectively, this open platform is designed to host multiple datasets, descriptors, descriptor extraction algorithms and similarity measures. We implemented an easy-to-use API designed to make the integration of the 3D object retrieval technology of third-party researchers agnostic to and independent of the global system complexity. Benchmarking results are automatically updated accordingly and presented qualitatively by displaying the 3D retrieved objects and quantitatively by providing the estimates of the state-of-the art performance criteria
LE BONHOMME Benoit, PREDA Marius, PRETEUX Francoise
MyMultiMediaWorld.com: a benchmark platform for 3D compression algorithms. ICIP 2008 : IEEE International Conference on Image Processing, IEEE Signal Processing Society, 12-15 october 2008, San Diego, United States, 2008, pp. 2700-2703, ISBN 978-1-4244-1765-0
abstract
In this paper we present an on-line platform, called MyMultiMediaWorld.com, designed to help standardization bodies and communities to benchmark compression algorithms for still 3D objects. Based on MPEG standards, this platform provides an easy-to-use API to integrate the algorithms to be evaluated. The platform automatically benchmarks them from the platform extensible 3D database. When uploading new 3D contents, benchmark results for the various available compression schemes are automatically updated. Filtering tools are provided to help performance assessment at scales ranging from individual 3D content to database subsets
LE BONHOMME Benoit, PREDA Marius, PRETEUX Francoise
3D compression benchmarking with MyMultimediaWorld.com. 3DTV-CON 2008 : The True Vision - Capture, Transmission and Display of 3D Video, IEEE, 28-30 may 2008, Istanbul, Turkey, 2008, pp. 105-108, ISBN 978-1-4244-1755-1
abstract
In this paper, we present the MyMultimediaWorld Internet-based platform relying on the MPEG-4 standard and designed to benchmark 3D compression algorithms. We implemented an easy-to-use API designed to make the integration of the 3D compression algorithm of third-party researchers agnostic to and independent of the global system complexity. Benchmarking results are automatically updated accordingly and presented quantitatively by displaying the 3D compression performance fields
LE BONHOMME Benoit, PREDA Marius, PRETEUX Francoise
On-line benchmarking for multimedia applications with www.MyMultimediaWorld.com. WIAMIS 2008 : 9th International Workshop on Image Analysis for Multimedia Interactive Services, IEEE Computer Society, 07-09 may 2008, Klagenfurt, Austria, 2008, pp. 235-238, ISBN 978-0-7695-3344-5
abstract
Here, we present a new method for benchmarking multi-media related algorithms by providing a web-based architecture able to continuously update (1) the relevant data set through a common representation based on MPEG-4, and (2) the set of algorithms by an open API. The platform benchmark results are updated in real-time and presented for each media, for each group of media or for the entire database. Functionalities for on-line multimedia benchmarking are illustrated for indexation and compression purpose.
TRAN Son Minh, PREDA Marius, PRETEUX Francoise
Low computation method for fast mode decision in H.264/MPEG-4 AVC. IWSSIP 2008 : 15th International Conference on Systems, Signals and Image Processing, IEEE, 25-28 june 2008, Bratislava, Slovakia, 2008, pp. 483-486, ISBN 978-80-227-2856-0
abstract
The efficiency of the H.264/AVC video coding standard (the latest in the MPEG family) can be further improved by advancing new prediction key-techniques. However, generally these techniques also lead to an extremely high complexity encoding process. As a solution to this problem, we focused on a fast technique to avoid the exhaustive search on the numerous prediction methods available in the standard. Exploiting the high spatial correlation in the natural video, we introduce a new measure of conformance (MC), which is based on the similarity of performance produced by the encoder on the neighbour blocks. This MC makes it possible to select automatically the sub-optimal prediction mode for intra coding as well as to safely avoid the full-scale search for motion compensation applied to variable block-size throughout multiple reference pictures. The MC is updated during the encoding process of the considered block. Therefore, it does not expose any serious additional computation. The experimental results obtained by the new technique are discussed in the paper. In average, the H.264 encoder is speeded up by 23 % at a slight decrease in compression efficiency (5.8 %) for all most the same PSNR quality (-0.08 %)
LE BONHOMME Benoit, PREDA Marius, PRETEUX Francoise
Extended MPEG-7 schema for 3D on demand. WMSRM 2007 : Workshop on Multimedia Semantics - The Role of Metadata, Aachen : Verlagshaus Mainz, 05-06 march 2007, Aachen, Germany, 2007, pp. 218-229, ISBN 3-86130-929-7
abstract
This paper presents an XML Schema that extends the structure of a MPEG-7 document in order to support all the functionalities of 3D on Demand service. The database behind this service, classified according to object types (i.e. static or animated) and semantic categories (i.e. planes, animal, vehicles), is available on line at www.3dod.org. By using the XML language, natively supported by MPEG-7, we specify the set of elements (descriptors and description scheme) making it possible the installation of such a service for 3D content distribution. The semantic classification of the database is based on a hierarchical classification tree. We developed a user-friendly interface in order to update the tree and intuitively browse and tag the 3D objects
LE BONHOMME Benoit, PREDA Marius, COURTAUD Didier, PRETEUX Francoise
Extension du schéma MPEG-7 et base de données XML pour un service de 3D On Demand. TAIMA 2007: 5èmes Ateliers de Travail sur l'Analyse d'Images, Méthodes et Application, 22-26 mai 2007, Hammamet, Tunisie, 2007, pp. 313-318
abstract
Afin d'assurer toutes les fonctionnalités d'un service de 3D On Demand dans un contexte standardisé, nous avons développé une extension du schéma XML MPEG-7. Nous avons en outre spécifié et implanté un ensemble de descripteurs et schémas de description pour diffuser de façon interopérable des contenus 3D. La base de données associée, structurée par types d'objet (statique ou animé) et catégories sémantiques (avion, animal, véhicule...), est disponible à l'adresse www.3dod.org
LE POULIQUEN Franck, PREDA Marius, PRETEUX Francoise
LABIAO : première plate-forme MPEG-4 pour le Langage Parlé Complété assisté par ordinateur . TAIMA 2007 : 5èmes Ateliers de Travail sur l'Analyse d'Images, Méthodes et Application, ARTS-PI, 22-26 mai 2007, Hammamet, Tunisie, 2007, pp. 459-464, ISBN 978-9973-61-802-3
abstract
Le projet LABIAO du réseau français RIAM vise à développer etoffrir un service de Langage Parlé Complété (LPC) assisté parordinateur en simulant les gestes dÿÿun signeur humain. Le principe du LPC est d'associer des configurations de la main à des phonèmes afin de lever les ambiguïtés de la seule lecture labiale. La plate-forme développée s'appuie sur les technologies du standard MPEG-4 pour modéliser, animer, compresser et transmettre le visage parlant et la main codeuse virtuels 3D. Représentation des objets de synthèse 3D par maillage et squelette, déformation par morphing, schémas de compression de type prédictif et conversion en clefs d'animation des phonèmes reconnus, tels sont les principaux modules de l'architecture client/serveur actuellement en cours de test en environnement fixe pour une application de type " salle de classe " et en environnement mobile pour une application de type communication par téléphone portable.
MORAN BURGOS Francisco, PREDA Marius, LAFRUIT Gauthier, VILLEGAS Paulo, BERRETTY Robert-Paul
Adaptive 3D content for multi-platform on-line games . CW 2007 : International Conference on Cyberworlds, IEEE, 24-26 october 2007, Hannover, Germany, 2007, pp. 1-8, ISBN 978-0-7695-3005-5
abstract
Most current multi-player 3D games can only be played on dedicated platforms, requiring specifically designed content and communication over a prede-fined network. To overcome these limitations, the OLGA (On-Line GAming) consortium has devised a framework to develop distributive, multi-player 3D games. Scalability at the level of content, platforms and networks is exploited to achieve the best trade-offs between complexity and quality. Besides, stan-dardized content compression formats (MPEG-4, JPEG 2000) are used in OLGA's framework, enabling easy deployment over existing infrastructure, while keeping hooks to well-established practices in the game industry
PREDA Marius, JOVANOVA Blagica, ARSOV Ivica, PRETEUX Francoise
Optimized MPEG-4 animation encoder for motion capture data . WEB 3D 2007 : 12th International Conference on 3D Web Technology, New York : ACM, 15-18 april 2007, Perugia, Italy, 2007, pp. 181-190, ISBN 978-1-59593-652-3
abstract
This paper presents first compression results on using the MPEG-4 BBA standard for encoding motion capture data. We first introduce a detailed description of the main compression mechanisms used in recently BBA standard: prediction, frequency transform, quantization and entropy encoder and discuss the theoretical range of encoding performances. Then we introduce an optimized BBA encoder including also a key-frame reduction mechanism and show the compression results on animation files from typical motion capture data-base. We compare the results with the ones reported in literature showing the advantages of the MPEG-4 BBA in terms of bit-rate, complexity and range control
ROYER Julien, NGUYEN Han, MARTINOT Olivier, PREDA Marius, PRETEUX Francoise, ZAHARIA Titus
Interactive TV on parliament session . SPIE Conference on Mathematics of Data/Image Pattern Recognition, Compression, Coding, and Encryption X, with Applications, Washington : SPIE Press, 26-27 august 2007, San Diego, Ca, United States, 2007, pp. 1-8, ISBN 978-0-8194-6848-2
abstract
This paper introduces a new interactive mobile TV application related to parliament session. This application aims to provide additional information to mobile TV users by inserting automatically and in real-time interactive contents (complementary information, subject of the current session...) into original TV program, using MPEG-4 streaming video and extra real time information (news, events, databases... from RSS streams, Internet links...). Here, we propose an architecture based on plug-in multimedia analyzers to generate the contextual description of the media and on an interactive scene generator to dynamically create related interactive scenes. Description is implemented according to the MPEG-7 standard.
MORAN BURGOS Francisco, PREDA Marius, LAFRUIT Gauthier, VILLEGAS Paulo, BERRETTY Robert-Paul
A content adaptation approach for on-line gaming on various networks and terminals . iDig 2006 : International Digital Games Conference, 26-28 september 2006, Portalegre, Portugal, 2006, pp. 233-236
abstract
Most current multi-player 3D games can only be played on dedicated platforms, requiring specifically designed content and communication over a predefined network. To overcome these limitations, the OLGA (On-Line GAming) consortium has devised a framework to develop real distributive, multiplayer 3D games. Scalability at the level of content, platforms and networks is exploited to achieve the best complexity vs. quality. Additionally, standardised content representation and compression formats (MPEG-4, JPEG 2000) are used in OLGA's framework, enabling easy deployment over existing infrastructure, while keeping hooks to well-established practices in the game industry
MORAN BURGOS Francisco, PREDA Marius, LAFRUIT Gauthier, VILLEGAS Paulo, BERRETTY Robert-Paul
OLGA: On-Line GAming over heterogeneous platforms thanks to standard scalable content. AXMEDIS 2006 : International Conference on Automated Production of Cross Media Content for Multi-channel Distribution, Firenze : Firenze University Press, 13-15 december 2006, Leeds, United Kingdom, 2006, pp. 6-13, ISBN 88-8453-526-3
URL: http://www.fupress.com/archivio/pdf/2585.pdf
abstract
Most current multi-player 3D games can only be played on a single dedicated platform such as PCs, video-consoles, or (very recently) cell-phones, requiring specifically designed content and inter-terminal communication over a predefined network. To overcome these limitations, the OLGA (On-Line GAming) consortium has devised a framework to develop real distributive, multi-player 3D games where scalability at the level of content, platforms and networks is exploited to achieve the best complexity vs. quality and load-balancing trade-offs given the distributive resources available over the end-to-end delivery chain. Additionally, standardized content representation and compression formats (XML, MPEG-4, JPEG 2000) are used in OLGA's framework, enabling easy deployment over existing infrastructure, while keeping hooks to well-established practices in the game industry
PREDA Marius, PRETEUX Francoise
The OLGA project: how standards, enable on-line gaming over, heterogeneous, networks. IWSSIP 2006 : 13th International Conference on Systems, Signals and Image Processing, Košice : Harlequin, 21-23 september 2006, Budapest, Hungary, 2006, pp. 1-2, ISBN 8-0890-8209-2
abstract
According to the current business model, a video game is developed for specific hardware and software resources. The 3D content is off-line tuned to the specific requirements of the targeted configuration. This makes difficult (even impossible) for the same on-line multi-user game to be played on different platforms. Interoperability and seamless scalability are therefore not ensured and the paradigm "create once and reuse many" is not satisfied. To overcome these drawbacks and to enable roaming of games on a variety of terminals and networks, we design and implement core technologies for 3D graphics (static and animated objects) adaptation. Moreover, additional metadata enriches the 3D content so that becomes intelligent enough to be on-line and in a seamless way adapted. Founding our approach on the MPEG-4 open standard, the deployment of the game on a large variety of platforms is ensured. The current work was conducted within the IST FP6 OLGA project. OLGA exploits content scalability and extends the generic adaptability framework to the level of platforms and networks, scaling down the content but also the network and processing load to the distributive resources available over the end-to-end delivery chain. The OLGA concept was validated within an on-line game (playable on both PC and mobile phone). However, the OLGA framework is generic enough to be appropriate to other 3D graphics domains. Costumers will be able to use (3D) content interactively, anywhere and at anytime
PREDA Marius, PRETEUX Francoise
Mesh simplification based on animation constraints. TFIT 2006 : 3rd Taiwanese-French Conference on Information Technology, 28-30 march 2006, Nancy, France, 2006, pp. 225-236
abstract
When deploying new services with advanced 3D graphics functionalities, rendering complex 3D animated objects over terminals with very limited capabilities as PDAs or CPs is a challenging issue. This paper addresses how to consistently simplify dynamic skinned objects, i.e. 3D models represented as a seamless mesh associated with a skeleton. The dynamic behavior is expressed as constraints used to parameterize the well-known QEM (Quadric Error Metric) mesh simplification algorithm. A weighting factor is introduced (1) to specify how a given set of bones influences the simplification procedure and (2) to overcome the uncertainty when choosing the decimated target. The biomechanical characteristics - i.e. relationships between skin and bones - are directly exploited in order to constrain and control the simplification procedure. In order to ensure a consistent animation after the simplification, the concept of bones is taken into account either as a boundary constraint or as a cost-component in the quadric error. The developed algorithm has been applied to MPEG-4 compliant skinned models. The results are discussed and compared to those obtained by applying the initial QEM.
TRAN Son Minh, PREDA Marius, PRETEUX Francoise
Exploiting spatial correlation for fast mode decision in H264 intra coding. IWSSIP 2006 : 13th International Conference on Systems, Signals and Image Processing , 21-23 september 2006, Budapest, Hungary, 2006, ISBN 978-80-89082-09-4
abstract
The paper presents a fast mode decision algorithm for H.264/AVC intra prediction based on spatial correlation information. Intuitively, the mode of intra prediction is selected via the exhaustive full search manner. When the modes of the neighbors are already decided, the one of the current block can be inherited from the best matched neighbor's. A threshold for matching criteria is defined to ensure the rollback to the exhaustive search in the case of high deviation. The experimental results show that we can save the analyzing time and therefore the speed of the encoder up to 16% with a slight increment (less than 1%) in bitrate of the compressed contents
TRAN Son Minh, PREDA Marius, ZAHARIA Titus, PRETEUX Francoise
Advanced Video Compression for Video-On-Demand services. TFIT 2006 : 3rd Taiwanese-French Conference on Information Technology, 28-30 march 2006, Nancy, France, 2006, pp. 251-262
abstract
The work describes a research issue on designing and implementing a Video-On-Demand system. The latest technique of video compression - the MPEG-4 Advanced Video Coding - is deployed to efficiently solve the storage problem of multimedia contents. User-friendly interface for both service maintenance as well as service usage at end-user is also addressed. The proposed complete solution of Video-On-Demand service therefore not only inherits the interactive feature on watching video / movie as other system in the same branch, but also proves to be an efficient, simplicity-oriented way for storing, manipulating and retrieving multimedia contents
ZAHARIA Titus, PREDA Marius, PRETEUX Francoise
Interactivity, reactivity and programmability: advanced MPEG-4 multimedia applications . ICCE 2006 : International Conference on Consumer Electronics, IEEE, 07-11 january 2006, Las Vegas, Nv, United States, 2006, pp. 441-442, ISBN 0-7803-9459-3
abstract
This paper presents recent developments on the creation of advanced iDTV applications with MPEG-4 technologies. Elaborated within the framework of the European ITEA Jules Verne project the proposed Encyclopedia application exploits sophisticated multimedia representations enriched with dynamic behaviors, enabled by the programmatic functionality supported by the MPEG-4 standard. A comprehensive integration of the 3D graphics and audio-visual MPEG technologies together with the Java programming is achieved
FOLEA Octavian, PREDA Marius, PRETEUX Francoise
MPEG-4 SDK: from specifications to real applications. ICCOM 2005 : 9th WSEAS International Conference on Communications, WSEAS , 14-16 july 2005, Athens, Greece, 2005, pp. 1-6
URL: http://www.wseas.us/e-library/conferences/2005athens/cscc/iccom/papers.htm
abstract
Nowadays, multimedia contents are invading the digital world through a wide family of distribution channels, and are played on terminals with various capabilities and resources. In such hybrid and heterogeneous environments, the collaboration between operating system, network and application layer becomes a critical requirement. The middleware is a new layer charged with the interoperability issues. Defining a multimedia middleware requires the integration of technological solutions on the middleware side (RMI, web services, J2EE, DCOM) with network protocols for transmitting multimedia content (HTTP, RTSP, SIP, H323) on different hardware platforms (PC, PDA, mobile phone). The availability of international standards offering solutions on all these levels becomes a strong requirement. MPEG-4 is a powerful multimedia standard in terms of media representation, scene composition, and user interactivity. However, building an MPEG-4 application demands an in-depth knowledge of MPEG-4 specifications which currently limits the world wide deployment of the standard. In order to facilitate MPEG-4 usability for non-expert developers, this paper addresses the technical issues related to the implementation of an MPEG-4 Software Development Kit (SDK). By focusing on the MPEG-4 scene composition level and on the graphics representation features, we build a low-level MPEG-4 SDK (scene graph access, media and stream processing) compliant with scene and media specifications. The more specific issue of virtual character animation is addressed by developing an intuitive API; it is referred to as MPEG-4 VC API and supports high-level functionalities (data-based semantic access, hierarchical object processing and stream control). We demonstrate the relevance of this toolkit for the easy design and creation of real applications by implementing a set of applications. The first one is a plug-in for 3dsmax providing MPEG-4 content importing/exporting. The second one is a converter format for Maya and MPEG-4. The third one is a plug-in for QoSmos, a QoS framework for interactive 3D applications. No particular knowledge of the MPEG-4 standard is therefore required. The SDK toolkit is extensively evaluated within the OLGA IST FP6 European Project
PREDA Marius, TRAN Son Minh, PRETEUX Francoise
Adaptation of quadric metric simplification to MPEG-4 animated object. PCM 2005 : Pacific-Rim Conference on Multimedia, Berlin Heidelberg : Springer-Verlag, 13-16 november 2005, Jeju Island, Korea, Republic Of, 2005, pp. 49-60, ISBN 978-3-540-30027-4
abstract
Our work focuses on the simplification of MPEG-4 avatar models. Similar to other general purposed 3D models, these avatars often claim complex, highly detailed presentation to maintain a convincing level of realism. However, the full complexity of such models is not always required, especially when a client terminal - for the reason of portability and cost reduction - cannot or does not necessarily support high complex presentation. First, we deploy the well-known 3D simplification based on quadric error metric to create a simplified version of the avatar in question, taking into account that the avatar is also a D model based on manifold mesh. Within this general scope, we introduce a new weight factor to overcome an uncertainty in choosing target for decimation. Next, exploiting the biomechanical characteristic of avatars - having the underlying skeleton structure - we propose an adaptation of the simplifying technique to avatars. The concept of bones is taken into account as either a boundary constraint or a cost-component for the quadric error. Encouraging results can be obtained with these modified procedures
PREDA Marius, FOLEA Octavian, PRETEUX Francoise
Creating with Maya, streaming and playing with MPEG-4. MEDIANET 2004 : 2nd International Conference on Intelligent Access of Multimedia Documents on Internet, 25-28 november 2004, Tozeur , Tunisia, 2004, pp. 261-272
URL: http://www-artemis.it-sudparis.eu/Publications/library/Preda-MediaNet04.pdf
abstract
In this paper, we investigate the feasibility to export the representation and the animation of a virtual character, designed by using Maya, into an articulated object compliant with the new specifications of the MPEG-4 standard, namely the Bonebased Animation (BBA) framework. The Maya versus MPEG-4 scene graph concepts are first addressed. Then the properties of the Maya tool set for content creation and the MPEG-4 tool set for the content representation are discussed. Finally, the Maya to MPEG-4 exporter is described in details. Results obtained by the related implementation demonstrate the relevant conversion of the following character attributes: geometry, color, texture, skeleton hierarchy, bone-skin influence and animation parameters
PREDA Marius, MORAN BURGOS Francisco, GIOIA Patrick, LAFRUIT Gauthier
3D graphics in MPEG-4. CGI 2004 : Computer Graphics International, 16-19 june 2004, Crete, Greece, 2004
URL: http://www-artemis.it-sudparis.eu/~preda/MPEG-4/CGI04/AFX_1.Introduction.pdf
abstract
Nowadays 3D graphics invade the multimedia world. Ranging from simple applications consisting in representing and animating simple 3D objects on lightweight devices, to scientific visualization, computer aided design and entertainment applications like 3D cartoons and games, the adoption of 3D graphics content as a rich medium to communicate in multimedia space is currently operated at large scale. However, producing high quality 3D content is still an expensive and time consuming task, mainly due to a high fragmentation with respect to the representation formats and authoring tools. Within this multimedia society, the existence of standards, ensuring interoperability over networks and terminals, is highly recommended. The proposed tutorial addresses the issue of a unified and standardized 3D compression and transmission framework, established within the MPEG-4 standardization activities. After a short overview of the MPEG-4 architecture detailing the integration, synchronization and interaction with rich multimedia content, three sections are proposed for presenting the 3D graphics capabilities of MPEG-4. Specifically, tools allowing geometry representation (explicit, parametric, and implicit representation), including compression algorithms standardized by MPEG-4 are detailed in the first section. The second section gives a complete overview of texture mapping techniques, advanced texture representation and scalable texture coding. The last section addresses MPEG-4's animation mechanisms and provides details with respect to animated character (skinning and morphing) tools
TRAN Son Minh, PREDA Marius, FAZEKAS Kalman, PRETEUX Francoise
New proposal for enhancing the interactive capability in MPEG-4. MMSP 2004 : 6th International Workshop on Multimedia Signal Processing, IEEE, 29 september - 01 october 2004, Siena, Italy, 2004, pp. 415-418, ISBN 0-7803-8578-0
abstract
The paper gives a short overview on the new feature of the recent MPEG-4 standard, namely interactive facilitation of multimedia contents. Some experiments on dealing with BIFS and MPEG-J - the two main motors enabling the interactivity in MPEG-4 - are presented. These experiments serve for two targets. First, they demonstrate a very perspective capability of MPEG-4 based multimedia contents, which are not only flexible in composition but also make interaction with viewer possible. Next, they expose a gap occurring in merging the computing and broadcasting technology in MPEG-4, namely temporal constraint versus random access. The work also outlines some solution to overcome this problem. The goal is to improve the performance of the interactivity enabling feature so that MPEG-4 standard actually integrates the computing capability into compression technique, enabling the generation of sophisticated multimedia scene
TRAN Son Minh, PREDA Marius, FAZEKAS Kalman, PRETEUX Francoise
Improvement of the temporal constraint in MPEG-4 BIFS. COST 276 : 6th Workshop on Information and Knowledge Management for Integrated Media Communication, 06-07 may 2004, Thessaloniki, Greece, 2004, pp. 83-87
abstract
Besides demonstrating the powerful capabilities of the recent MPEG-4 standard, namely the composition and interactive facilitation of multimedia contents, the work points out some shortcomings of the standard in supporting these advanced features in the "light level", i.e. in the scope of BIFS. The work also outlines some solution to overcome the problems. The goal is to improve the performance of BIFS layer so that it can actually enable the generation of sophisticated multimedia scene
LAFRUIT Gauthier, MAGNENAT-THALMANN Nadia, NEIDER Jackie, BADIQUE Eric, PREDA Marius
Present and future of 3D graphics standards . VLBV 2003 : International Workshop on Visual Content Processing and Representation, 18-19 september 2003, Madrid, Spain, 2003
abstract
This talk gives a short overview of the current 3D graphics standards and introduces the trends for future standardization work
PREDA Marius
Animation Tools in AFX. Web3D 2003 : 8th International Conference on 3D Web Technology, 09-12 mars 2003, Saint Malo, France, 2003, vol. Part of MPEG-4 Animation Framework eXtension tutorial
abstract
This tutorial first introduces general computer graphics concepts and reviews the particular Synthetic/Natural Hybrid Coding tools already present in MPEG-4 versions 1 and 2, such as Face and Body Animation, 3D Mesh Coding and Visual Texture Coding. It then explains how the AFX (Animation Framework eXtension) toolset included in MPEG-4 version 5 propose more complete and generic mechanisms for the efficient coding of both shapes and textures of static 3D models. Among these are higher order surface approximations (polynomial/rational patches, subdivision surfaces and MeshGrids); solid descriptions; image-based model-ing/rendering techniques (Light Field Mapping and Depth Image Based Representation); procedural and synthesized textures; etc. Many of such techniques consider the view-dependent transmission of hierarchical content, that bandwidth-limited or client-driven appli-cations would benefit from. But, perhaps even more importantly, AFX provides tools for the compact description of dynamic (i.e., animated) 2D/3D objects, such as efficient interpolators and Bone-Based Animation.
TRAN Son Minh, PREDA Marius, PRETEUX Francoise, GSCHWINDT Andras
An MPEG-4 BIFS based authoring tool for multimedia content. ICISP 2003 : International Conference on Image and Signal Processing, 25-27 june 2003, Agadir, Morocco, 2003
abstract
In this paper, we propose an authoring tool referred to as ICCT (Interactive Content Creating Tool). The tool serves to easily generate as well as dynamically control a multimedia and interactive MPEG-4 content represented as a hierarchical scene graph. In the parametric mode of ICCT, scene-designer - using a user friendly interface for setting properties of objects in the scene -can create an enriched multimedia content with various types of objects: audio, video, image, text … Some predefined dynamic behaviors for certain types of objects are available, such as positioning the video clip in the scene, start / pause the media, … The maximum power of interaction between the viewer and the scene as well as between objects of the scene can be obtained with the programmatic mode of the ICCT. In this mode, with the aid of script, scene-designer can flexibly define a scene, whose final multimedia content can be presented to viewer in various manners depending on request from viewer and also on the mutual interactions between objects of the scene. The combination of the two modes makes ICCT useful for both novice and experienced scene-designer to exploit the power of scene-composition and interactivity provided with the recent MPEG-4 standard in order to create sophisticated video applications
TRAN Son Minh, PREDA Marius, PRETEUX Francoise, FAZEKAS Kalman
Exploring MPEG-4 BIFS features for creating multimedia games. ICME 2003 : International Conference on Multimedia and Expo, IEEE, 06-09 july 2003, Baltimore, Wa, United States, 2003, vol. 1, pp. 429-432, ISBN 0-7803-7965-9
abstract
This paper explores the new features of the recent MPEG- 4 standard, namely the description and the composition of an interactive multimedia scene. Providing with such advanced facilities, the MPEG-4 standard is no longer considered only as an efficient compression tool for conventional video / audio application. It is now granted the power of computing mechanism as any other programming languages to facilitate the creation of high interactive multimedia contents. Game-applications therefore can be also considered as a new output-feature of the MPEG-4 standard. The work describes in detail how game can be created within the MPEG-4 framework. The process of making game with MPEG-4 is studied comprehensively to demonstrate the compatibility as well as the advantages of the MPEG-4 standard regarding to Flash technology, a well-known tool for making games over the Internet
TRAN Son Minh, PREDA Marius, PRETEUX Francoise, FAZEKAS Kalman
Case study : a basic composing tool for editing MPEG-4 System information. WIAMIS 2003 : 4th European Workshop on Image Analysis for Multimedia Interactive Services , 09-11 april 2003, London, United Kingdom, 2003, pp. 449-455
abstract
In addition to efficient methods to encode media objects (audio, video) such as wavelet coding, object-based video and 2D, 3D mesh coding, the MPEG-4 standard also offer the possibility to compose and manipulate the multimedia scene interactively. The latter feature, very promising but not yet explored, is addressed in this paper. We study and implement a subset of the MPEG-4 system, so that a video content can be built with conventional visual and audio materials and enhanced with several features supported by the scene description provided in MPEG-4 system. The resulting output is a real multimedia content, which is a mixture of audios, videos, texts, graphics and some active components serving simple interactivity. To ease the work of editing such content, we create a simple user-friendly composing tool. The goal is to make the scene description layer transparent to scene-designer: composition can be proceeded without any knowledge of MPEG-4 system information
PREDA Marius
Virtual character animation within MPEG-4. Third Workshop and Exhibition on MPEG-4, 25-27 june 2002, San Jose, Ca, United States, 2002
abstract
This tutorial first introduces general computer graphics concepts and reviews the particular Synthetic/Natural Hybrid Coding tools already present in MPEG-4 versions 1 and 2, such as Face and Body Animation, 3D Mesh Coding and Visual Texture Coding. It then explains how the AFX (Animation Framework eXtension) toolset to be included in MPEG-4 version 5 will bring more complete and general mechanisms for the efficient coding of both shapes and textures of static 3D models. Among these are higher order surface approximations (polyno-mial/rational patches, subdivision surfaces and MeshGrids); solid descriptions; image-based modeling/rendering techniques (Light Field Mapping and Depth Image Based Representa-tion); procedural and synthesized textures; etc. Many of such techniques consider the view-dependent transmission of hierarchical content, that bandwidth-limited or client-driven appli-cations would benefit from. But, perhaps even more importantly, AFX will provide tools for the compact description of dynamic (i.e., animated) 3D objects, such as efficient interpolators and Bone-Based Animation.
PREDA Marius
MPEG-4 SNHC tools. IST Concertation Meeting, 18 july 2002, Bologna, Italy, 2002
abstract
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PREDA Marius, PRETEUX Francoise
Critic review on MPEG-4 face and body animation. ICIP 2002 : International Conference on Image Processing, IEEE, 24-28 june 2002, Rochester, Ny, United States, 2002, vol. 3, pp. 505-508, ISBN 0-7803-7622-6
abstract
The MPEG-4 face and body animation (FBA) specifications aims at standardizing an interchange format for specifying virtual face and body modeling and related animation parameters. The scene graph concept, the FBA nodes, semantics and representation of the animation parameters as well as compression and streaming capabilities are successively addressed. The compatibility between virtual character animation techniques and MPEG-4 FBA is analyzed in terms of modeling, deformation behavior and animation capabilities
PREDA Marius, PRETEUX Francoise
Advanced animation framework for virtual character within the MPEG-4 standard . ICIP 2002 : International Conference on Image Processing, IEEE, 24-28 june 2002, Rochester, Ny, United States, 2002, vol. 3, pp. 509-512, ISBN 0-7803-7622-6
abstract
The paper presents an advanced animation framework for virtual characters within the MPEG-4 standard. The bone-based animation (BBA) specifications are described and it is shown how they extend the MPEG-4 face and body animation (FBA) specifications. Specifically, the scene graph concept, the BBA nodes related to bone and muscle modeling, the animation parameters and the compression capabilities are successively addressed and discussed within a specific application related to a sign language communication system
SALOMIE Ioan A, GAVRILESCU Augustin, DECLERCK R, RAVYSE I, CORNELLIS J, PREDA Marius
Efficient animation of meshgrid models using a skin and bone system. SPS 2002 : 3rd IEEE Benelux Signal Processing Symposium, 21-22 march 2002, Leuven, Belgium, 2002
abstract
In this paper we describe an AFX compliant Skin&Bone animation-based method applied on a MESHGRID surface representation. The approach is based on deforming the regular Reference-Grid to obtain animation of the vertices of the object attached to the Reference-Grid. The MESHGRID representation employed is a humanoid model built from implicit surfaces e.g. blobbs, cylinders, cones, ellipsoids ,etc. The flexibility and efficiency of this representation for animation purposes relies upon the reduced number of vertices that are described in the animation file. Moreover, it is more intuitive to design the animation using the surrounding Reference-Grid that defines the MESHGRID description
PREDA Marius, PRETEUX Francoise
Advanced virtual humanoid animation framework based on the MPEG-4 SNHC standard . EUROIMAGE ICAV3D 2001 : International Conference on Augmented, Virtual Enviroments and Three-Dimensional Imaging, 30-01 may 2001, Mykonos, Greece, 2001, pp. 311-314
URL: http://www-artemis.it-sudparis.eu/Publications/library/ICAV3D01-preda.pdf
abstract
This paper addresses the issue of defining an advanced virtual humanoid animation framework based on the MPEG-4 standard and overcoming the above-mentioned constraints and limitations. Specifically, our main contributions consist of remodeling the MPEG-4 avatar in order to easily manage its deformations and of supporting the intuitive functionalities which are high level gesture description related. Specific methods for representing and manipulating the avatar structure and for achieving the avatar animation by using temporal and/or spatial subsets of animation parameters are proposed
Chapitre dans un livre (5)
MORAN BURGOS Francisco, PREDA Marius
MPEG 3D graphics representation. The MPEG representation of digital media, New-York;Dordrecht;Heidelberg [etc.] : Springer, 2012, pp. 203-229, ISBN 978-1-4419-6183-9
abstract
The Tri-Dimensional Graphics (3DG) information coding tools of MPEG-4 are mostly contained in MPEG-4 Part 16, "Animation Framework eXtension (AFX)", and focus on three important requirements for 3DG applications: compression, streamability and scalability. There are tools for the efficient representation and coding of both individual 3D objects and whole interactive scenes composed by several objects. Usually, the shape, appearance and animation of a 3D object are treated separately, so we devote different sections to each of those subjects, and we also devote another section to scene graph coding, in which we describe how to integrate MPEG-4’s 3DG compression tools with other (non MPEG-4-compliant) XML-based scene graph definitions. A final section on application examples gives hints on the flexibility provided by the 3DG toolset of MPEG-4.
ARSOV Ivica, PREDA Marius, PRETEUX Francoise
A server-assisted approach for mobile-phone games. Mobile multimedia processing : fundamentals, methods, and applications, Berlin;Heidelberg;New-York : Springer, 2010, (Lecture Notes in Computer Science, 5960/2010), pp. 170 -187 , ISBN 978-3-642-12348-1
abstract
While the processing power of mobile devices is continuously increasing, the network bandwidth is getting larger and the latency is going down, the heterogeneity of terminals with respect to operating systems, hardware and software makes it impossible to massively deploy mobile games. We propose a novel architecture consisting of (1) maintaining on the terminal only standardized operations (2) using a remote server for the game's logic and (3) updating the local scene by using compact commands. By identifying the game tasks that should remain local, we first analyze the performances of MPEG-4 3D graphics standard. We implemented an MPEG-4 player able to decode and visualize 3D and extended it for handling game content. We propose a client-server architecture and a communication protocol that ensure similar user experience while using a standard player - expected to be available on mobile devices in the near future.
TIMMERER Christian , CHIARIGLIONE Filippo , PREDA Marius, RODRÍGUEZ DONCEL Víctor
Accelerating media business developments with the MPEG extensible middleware. Towards the Future Internet - Emerging Trends from European Research, Amsterdam, Berlin, Tokyo [etc.] : IOS Press , 2010, pp. 217-226, ISBN 978-1-60750-538-9
abstract
This document provides an overview of the MPEG Extensible Middleware (MXM), one of ISO/IEC MPEG's latest achievements, defining an architecture and corresponding application programming interfaces (APIs) which enable accelerated media business developments. The paper describes the vision behind MXM, its architecture, and a high level overview of the API. Additionally, example MXM applications are given.
LE BONHOMME Benoit, PREDA Marius, PRETEUX Francoise
From MPEG-4 scene representation to MPEG-7 description. Multimedia semantics : the role of metadata, Berlin : Springer, 2008, (Studies in Computational Intelligence, 101), pp. 25-44, ISBN 978-3-540-77472-3
abstract
This chapter introduces the first online MAMS (Multimedia Asset Management System) synergistically developed around MPEG-4/MPEG-7 standards. We show how this combination solves the main challenges for any MAMS with respect to multimedia compression, representation, description as well as with respect to user interactivity. MPEG-4 can be used as a unique solution for storage and presentation of image, audio, video and 2D/3D graphics. Moreover, the basic MPEG-4 components (e.g. the elements of scene graphs) are easily extracted by bitstream parsing and exploited for completing the MPEG-7 content description schema. The solution we provide is open to third party descriptor extractors; with this purpose, a developer API (Application Programming Interface) grant access to decoded media and to the instantiation of the descriptors. The practical validation is achieved by an online MAMS devoted to the indexation of 3D graphics objects corresponding to large and heterogeneous database
PREDA Marius, PRETEUX Francoise
3D graphics standardization in MPEG-4. Encyclopedia of information science and technology, 2nd edition ed. Hershey : Information Science Reference, 2008, pp. 3757-3764, ISBN 978-1-60566-0264
abstract
This chapter is dedicated to professionals of 3D graphics industry, solution providers for on-line systems involving 3D content (games, persistent universes, virtual spaces with graphical representation), students and professors in digital sciences. The first section aims at presenting the background of the compression for multimedia signals. The second section presents the latest developments in MPEG-4 with respect to the compression and streaming of 3D graphics objects and scenes. The MPEG-4 tools, categorized into geometry, appearance and animation, are introduced. While MPEG standards specify only the bit-stream syntax and the architecture of the decoder, scheme for encoders' implementation are presented in this section. In the third section we describe a recently adopted MPEG model for 3D graphics consisting in opening the representation of graphics primitives to any XML-based format and completing it with binarization and compression layers. This shift in the manner of using MPEG-4 for 3D graphics is concretized in Part 25 of MPEG-4
Livre (1)
YOON Kyoungro, KIM Sang Kyun, HAN Jae Joon, HAN Seungju , PREDA Marius
MPEG-V : bridging the virtual and real world. Amsterdam : Elsevier, Academic Press, 2015, ISBN 978-0-12-420140-8
abstract
This book is the first to cover the recently developed MPEG-V standard, explaining the fundamentals of each part of the technology and exploring potential applications. Written by experts in the field who were instrumental in the development of the standard, this book goes beyond the scope of the official standard documentation, describing how to use the technology in a practical context and how to combine it with other information such as audio, video, images, and text. Each chapter follows an easy-to-understand format, first examining how each part of the standard is composed, then covers intended uses and applications for each particular effect
Autres rapports (134)
CAO Chao, PREDA Marius, ZAHARIA Titus
[PCC] TMC2 CE2.14 crosscheck result. july 2018
abstract
This is a crosscheck report of m42761 on "[PCC] TMC2 A differential coding method for patch side information" submitted by Huawei Technologies Inc. We crosschecked condition-C2.4 lossyG,lossyAttr,interRA. Our simulation results exactly matched with the ones provided by the proponents
CAO Chao, PREDA Marius, ZAHARIA Titus
[PCC] TMC2 CE2.4 crosscheck result. july 2018
abstract
This is a crosscheck report of m42680 on "PCC TMC2 CE2.4 Lossless Compression" submitted by Samsung. We crosschecked subtest A on top of absoluteD1 coding on Condition 2.1, 2.2, 2.5 (random access, lossless geometry), 2.6 (random access lossless geometry+color). Our simulation results exactly matched with the ones provided by the proponents
CAO Chao, PREDA Marius, ZAHARIA Titus
Proposal for adaptive orientation of projection planes. july 2018
abstract
The current TMC2 projection method fixes the projection planes to the following six oriented planes which are defined by their normals: (1.0, 0.0, 0.0); (0.0, 1.0, 0.0); (0.0, 0.0, 1.0); (-1.0, 0.0, 0.0); (0.0, -1.0, 0.0) and (0.0, 0.0, -1.0). [1] In the original TMC2 Patch generation process, the point cloud is decomposed into a minimum number of patches with smooth boundaries, while minimizing the reconstruction error. The clustering of the point cloud is first initialized by computing the maximal dot product of the plane normal and the point normal which is estimated using PCA (Principal Component Analysis) as described in [2]. Then followed with refining iteration by updating the cluster index to smooth the orientation of its nearest normals. This method is low complexity and efficient to use as the normals are all integers. However, the parts of the decoded point cloud with orientation other than vertical or horizontal may contains holes, with significant visual impact, because they lead to a D1 layer that has a form which is not compression friendly. This proposal is experimenting an adaptive orientation method to reduce the size of the projected 2D patch and the number of missed points for the entire point cloud while minimizing the distortion
CAO Chao, PREDA Marius, ZAHARIA Titus
Updates on adaptive orientation of projection planes method. july 2018
abstract
The proposed method: adaptive orientation of projection planes is experimenting an adaptive orientation method to find a better oriented plane for projection. We try to reduce the size of geometry bitstream by replacing the depth as the distance between the points to new-projection-plane. Meanwhile, we need to minimize the number of missed points and distortion for the entire point cloud. In this document, we describe test results on how our proposal affects the depth value, packing of the 2D image and the amount of missed points
CAO Chao, PREDA Marius, ZAHARIA Titus
Validation process and results of the submitted data for the responses to the Point Cloud Compression CfP. july 2018
abstract
The report presents the procedures, results and some detected issues we have while verifying the submitted data and data sheets. Since all proponents respond to the compression at Cat2-Lossy Geo. & Color-AI&RA[1], we took the sampling mainly in this two catalogs. The main efforts have been made on verifying whether the data submitted in the data sheets match or not, whether the applications can be used properly, whether the visualization of the decoded files is good, etc
CAO Chao, PREDA Marius, ZAHARIA Titus
[PCC] TMC2 CE2.8 crosscheck result on absoluteD1 coding method . july 2018
abstract
This is a crosscheck report of m42680 on "PCC TMC2 CE2.4 Lossless Compression" submitted by Samsung. We crosschecked subtest A on top of absoluteD1 coding on C2.3 lossyG,lossyAttr and C2.4 lossyG,lossyAttr,interRA. Our simulation results exactly matched with the ones provided by the proponents
KIM Sang Kyun, KYOUNG Sik Lee, PREDA Marius
APIs for Count People in IoMT. avril 2018
abstract
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MITREA Mihai, PREDA Marius
On the usage of blockchain solutions for IOMT. january 2018
abstract
During the 120th meeting held in Macao, MPEG issued an output document w17250 - Ideas on using digital coins for IoMT. The basic idea is that IoMT eco-system can only grow if it conveys economic value. While IoTs in general has value, media processing performed by IoMTs has an even greater value. Hence, the MPEG interest in using digital coins for facilitating the exchanges between media related devices and for supporting media related processing was thus confirmed
MITREA Mihai, PREDA Marius
Updated requirements for Internet of Media Things. april 2018
abstract
The Internet of Media Things and Wearables (IoMT & W) is the collection of interfaces, protocols and associated media-related information representations that enable advanced services and applications based on human to device and device to device interaction, in physical and virtual environments. Information refers to data sensed and processed by a device, and/or communicated to a human or another device
PREDA Marius
IoMT use case: monetization of the mThings transactions. april 2018
abstract
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CAO Chao, TULVAN Christian Liviu, PREDA Marius
Validation process and results of the submitted data for the responses to the Point Cloud Compression CfP. october 2017
abstract
120th MPEG meeting, Macau, China, October 2017- ISO/IEC JTC 1/SC 29/WG 11 N17203
MITREA Mihai, PREDA Marius
On the usage of IOMT in real life applications. october 2017, ISBN m41828
abstract
MPEG 120 th Meeting, 23 October 2017 to Friday, 27 October 2017 , Macau, China. Report ISO/IEC JTC 1/SC 29/WG 11 N 17203
PREDA Marius
Container for PCC TM and CE draft versions. october 2017, ISBN m41898
abstract
120th MPEG meeting, Macau, China, October 2017- ISO/IEC JTC 1/SC 29/WG 11 N17203
PREDA Marius
Draft notes and material of Paris AhG meeting on PCC. april 2017, ISBN m40230
abstract
118th MPEG meeting, Hobart, Australia, April 2017- ISO/IEC JTC 1/SC 29/WG 11 N16803
PREDA Marius, TULVAN Christian Liviu, CAO Chao
Merged results of PCC CfP. october 2017, ISBN m41501
abstract
120th MPEG meeting, Macau, China, October 2017- ISO/IEC JTC 1/SC 29/WG 11 N17203
TULVAN Christian Liviu, PREDA Marius
Status on PCC anchors and decoded files. july 2017, ISBN m41178
abstract
119th MPEG meeting, Torino, Italy, July 2017- ISO/IEC JTC 1/SC 29/WG 11 N17003
TULVAN Christian Liviu, PREDA Marius
Status on PCC normals. april 2017, ISBN m40672
abstract
118th MPEG meeting, Hobart, Australia, April 2017- ISO/IEC JTC 1/SC 29/WG 11 N16803
TULVAN Christian Liviu, PREDA Marius
Status on PCC decoded files. april 2017, ISBN m40671
abstract
118th MPEG meeting, Hobart, Australia, April 2017- ISO/IEC JTC 1/SC 29/WG 11 N16803
TULVAN Christian Liviu, PREDA Marius
Status on PCC anchors. april 2017, ISBN m40670
abstract
118th MPEG meeting, Hobart, Australia, April 2017- ISO/IEC JTC 1/SC 29/WG 11 N16803
TULVAN Christian Liviu, PREDA Marius
Point Cloud Compression (PCC) : renaming of anchors and decoded files. july 2017, ISBN m41292
abstract
119th MPEG meeting, Torino, Italy, July 2017- ISO/IEC JTC 1/SC 29/WG 11 N17003
TULVAN Christian Liviu, PREDA Marius
Status on PCC distortions. july 2017, ISBN m41179
abstract
119th MPEG meeting, Torino, Italy, July 2017- ISO/IEC JTC 1/SC 29/WG 11 N17003
TULVAN Christian Liviu, PREDA Marius
Status on PCC dataset. april 2017, ISBN m40669
abstract
118th MPEG meeting, Hobart, Australia, April 2017- ISO/IEC JTC 1/SC 29/WG 11 N16803
TULVAN Christian Liviu, PREDA Marius
MPEG assets : document repository updates. july 2017, ISBN m41180
abstract
119th MPEG meeting, Torino, Italy, July 2017- ISO/IEC JTC 1/SC 29/WG 11 N17003
TULVAN Christian Liviu, EUEE Jang, PREDA Marius
Point Cloud Compression (PCC) : updates on datasets and anchors. january 2017, ISBN m40020
abstract
117th MPEG meeting, Geneva, Switzerland, January 2017- ISO/IEC JTC 1/SC 29/WG 11 N16603
TULVAN Christian Liviu, EUEE Jang, PREDA Marius
Point Cloud Compression (PCC) : report on distortion results. january 2017, ISBN m40021
abstract
117th MPEG meeting, Geneva, Switzerland, January 2017- ISO/IEC JTC 1/SC 29/WG 11 N16603
LAVRIC Traian, PREDA Marius, SCURTU Veronica
Big Data for personalized user experience in AR. february 2016, ISBN M37910
abstract
The goal of this paper is to identify how Big Data can be useful in AR and which are the specifications that have to be met by ARAF in order to be able to take advantage of such technology. 114th MPEG meeting, San Diego, USA, February 2016 - ISO/IEC JTC1/SC29/WG11/M37910
BABB Greg , PEREY Christine , SCURTU Veronica, PREDA Marius
Comments on augmented reality reference model. february 2015, ISBN m35768
abstract
111th MPEG meeting, Genève, CH, February 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15065
BERTOLA Davide, LAVRIC Traian, TULVAN Christian Liviu, GABRIELLI Mircea Adrian, MESSINA Alberto, PREDA Marius, VAVALA Giuseppe
An initial demonstration of MLAF technologies. february 2015, ISBN m35667
abstract
111th MPEG meeting, Genève, CH, February 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15065
CHIARIGLIONE Leonardo , MESSINA Alberto, PREDA Marius
Proposal for update of MLAF requirements. february 2015, ISBN m35668
abstract
111th MPEG meeting, Genève, CH, February 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15065
KIM Sang Kyun, MITREA Mihai, PREDA Marius, CHIARIGLIONE Leonardo
AHG report on Media-centric Internet of Things (MIoT) and MPEG wearable. june 2015, ISBN m36419
abstract
112th MPEG meeting, Warsaw, PL - June 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15327
LAVRIC Traian, PREDA Marius
Comments on text of ISO/IEC CD 23000-13 2nd Edition ARAF. february 2015, ISBN m35932
abstract
111th MPEG meeting, Genève, CH, February 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15065
LAVRIC Traian, PREDA Marius
A proposal for MLAF reference software. october 2015, ISBN m15657
abstract
113th MPEG meeting, Geneva, CH - October 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15621
LAVRIC Traian, PREDA Marius
Draft of white paper on ARAF 2nd edition. october 2015, ISBN m15823
abstract
113th MPEG meeting, Geneva, CH - October 2015- ISO/IEC JTC 1/SC 29/WG 11 N15621
LAVRIC Traian, PREDA Marius
Editorial changes for ARAF v2.0. june 2015, ISBN m36683
abstract
112th MPEG meeting, Warsaw, PL, June 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15327
LAVRIC Traian, PREDA Marius
Material for MAR reference model. june 2015, ISBN m36682
abstract
112th MPEG meeting, Warsaw, PL, June 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15327
LAVRIC Traian, PREDA Marius
Presentation layer for MLAF. june 2015, ISBN M36418
abstract
112th MPEG meeting, Warsaw, PL, June 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15327
LAVRIC Traian, PREDA Marius
Local/Remote audio recognition protos. february 2015, ISBN m35936
abstract
111th MPEG meeting, Genève, CH, February 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15065
LAVRIC Traian, GABRIELLI Mircea Adrian, SCURTU Veronica, PREDA Marius
High level presentation layer for MLAF. february 2015, ISBN m35767
abstract
111th MPEG meeting, Genève, CH, February 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15065
LAVRIC Traian, SCURTU Veronica, PREDA Marius
Preliminary results on ARAF - JPEG-AR. february 2015, ISBN m36095
abstract
111th MPEG meeting, Genève, CH, February 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15065
PREDA Marius
Resolutions of 7th JAhG MAR meeting. june 2015, ISBN m36779
abstract
112th MPEG meeting, Warsaw, PL, June 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15327
PREDA Marius
MAR RM comments from SC24 and CEDRIS. june 2015, ISBN m36777
abstract
112th MPEG meeting, Warsaw, PL, June 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15327
PREDA Marius, CHIARIGLIONE Leonardo
Information on JTC 1/SC 6 text for NWIP ballot on information technology : object identifier assignments for the Internet of Things. june 2015, ISBN m36414
abstract
112th MPEG meeting, Warsaw, PL - June 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15327
SCURTU Veronica, TULVAN Christian Liviu, GABRIELLI Mircea Adrian, PREDA Marius
Reconstruction platform and dataset for 3D PointCloud compression. june 2015, ISBN m36523
abstract
112th MPEG meeting, Warsaw, PL, June 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15327
TULVAN Christian Liviu, POP Elena, SCURTU Veronica, PREDA Marius
Software implementation for Web3D Coding. june 2015, ISBN M36520
abstract
112th MPEG meeting, Warsaw, PL, June 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15327
TULVAN Christian Liviu, PREDA Marius
Web3D Coding for large objects with attributes. october 2015
abstract
113th MPEG meeting, Geneva, CH - October 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15621
TULVAN Christian Liviu, PREDA Marius
Point Cloud compression for cultural objects. october 2015
abstract
113th MPEG meeting, Geneva, CH - October 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15621
TULVAN Christian Liviu, PREDA Marius
MPEG conformance assets. february 2015, ISBN m35957
abstract
111th MPEG meeting, Genève, CH, February 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15065
TULVAN Christian Liviu, PREDA Marius
MPEG content assets. february 2015, ISBN m35956
abstract
111th MPEG meeting, Genève, CH, February 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15065
TULVAN Christian Liviu, PREDA Marius
MPEG software assets. february 2015, ISBN m35955
abstract
111th MPEG meeting, Genève, CH, February 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15065
TULVAN Christian Liviu, PREDA Marius
Content assets. october 2015, ISBN m15708
abstract
113th MPEG meeting, Geneva, CH - October 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15621
TULVAN Christian Liviu, PREDA Marius
Conformance assets. june 2015, ISBN m36693
abstract
112th MPEG meeting, Warsaw, PL, June 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15327
TULVAN Christian Liviu, PREDA Marius
Sofware Assets. june 2015, ISBN m36691
abstract
112th MPEG meeting, Warsaw, PL, June 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15327
TULVAN Christian Liviu, PREDA Marius
Conformance assets MPEG. october 2015, ISBN m15707
abstract
113th MPEG meeting, Geneva, CH - October 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15621
TULVAN Christian Liviu, PREDA Marius
Reference software assets. october 2015, ISBN m15706
abstract
113th MPEG meeting, Geneva, CH - October 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15621
TULVAN Christian Liviu, POP Elena, PREDA Marius
Updates on Web3D coding. february 2015, ISBN m35953
abstract
111th MPEG meeting, Genève, CH, February 2015 - ISO/IEC JTC 1/SC 29/WG 11 N15065
BALESTRI Massimo, BOBER Miroslaw , CHIARIGLIONE Leonardo , CORDARA Giovanni, FRANCINI Gianluca, GIBELLINO Diego, LAVRIC Traian, MESSINA Alberto, MORAN BURGOS Francisco, PASCHALAKIS Stavros , PREDA Marius
Proposal for a definition of CDVS engine APIs. april 2014, ISBN m33380
abstract
108th MPEG meeting, Valencia, ES - April 2014 - ISO/IEC JTC 1/SC 29/WG 11 N14310
BIVOLARSKI Lazar , PREDA Marius, MEKURIA Rufael , CESAR Pablo
Tele-immersion use case and associated draft requirements. july 2014
abstract
109th MPEG meeting, Sapporo, JP, July, 2014. - ISO/IEC JTC 1/SC 29/WG 11 N14537
CHIARIGLIONE Leonardo , BERTOLA Davide, MESSINA Alberto, PREDA Marius, LAVRIC Traian
Proposal for a Media Linking Application Format (MLAF). october 2014, ISBN m35117
abstract
110th MPEG meeting, Strasbourg, France - October 2014 - ISO/IEC JTC 1/SC 29/WG 11 N14812
GABRIELLI Mircea Adrian, LEHIANI Yassine, LAVRIC Traian, PREDA Marius
ARAF : remote recognition : analysis and preliminary results. july 2014, ISBN m34360
abstract
109th MPEG meeting, Sapporo, JP - July 2014 - ISO/IEC JTC 1/SC 29/WG 11 N14537
LAVRIC Traian, PREDA Marius
Updates on AugmentationRegion. january 2014, ISBN m32337
abstract
107th MPEG meeting, San José, CA, US - January 2014 - ISO/IEC JTC 1/SC 29/WG 11 N14113
LAVRIC Traian, PREDA Marius
Updates on POI. january 2014, ISBN m32335
abstract
107th MPEG meeting, San José, CA, US - January 2014 - ISO/IEC JTC 1/SC 29/WG 11 N14113
LAVRIC Traian, PREDA Marius
Updates on m26114 : initial proto design for server side processing for Augmented Reality. january 2014, ISBN m32336
abstract
107th MPEG meeting, San José, CA, US - January 2014 - ISO/IEC JTC 1/SC 29/WG 11 N14113
LAVRIC Traian, PREDA Marius
ARAF: remote audio recognition. october 2014, ISBN m35222
abstract
110th MPEG meeting, Strasbourg, France - October 2014 - ISO/IEC JTC 1/SC 29/WG 11 N14812
LAVRIC Traian, PREDA Marius
ARAF guidelines : PROTOs implementations. april 2014, ISBN m33382
abstract
108th MPEG meeting, Valencia, ES - April 2014 - ISO/IEC JTC 1/SC 29/WG 11 N14310
MEKURIA Rufael , CESAR Pablo , PREDA Marius
Initial set of requirements for 3D tele-immersion application. january 2014, ISBN m32641
abstract
107th MPEG meeting, San José, CA, US - January 2014 - ISO/IEC JTC 1/SC 29/WG 11 N14113
PREDA Marius, KIM Jounghyun Gerard , PEREY Christine
Contributions to MAR RM. july 2014, ISBN m34338
abstract
109th MPEG meeting, Sapporo, JP - July 2014 - ISO/IEC JTC 1/SC 29/WG 11 N14537
TULVAN Christian Liviu, MAMMOU Khaled , PREDA Marius
Results on Open3DGC and OpenCTM benchmarking . april 2014, ISBN m33261
abstract
108th MPEG meeting, Valencia, ES - April 2014 - ISO/IEC JTC 1/SC 29/WG 11 N14310
TULVAN Christian Liviu, PREDA Marius
Updates on web3D coding. october 2014, ISBN m35134
abstract
110th MPEG meeting, Strasbourg, France - October 2014 - ISO/IEC JTC 1/SC 29/WG 11 N14812
TULVAN Christian Liviu, PREDA Marius
MPEG software assets. october 2014, ISBN m35136
abstract
110th MPEG meeting, Strasbourg, France - October 2014 - ISO/IEC JTC 1/SC 29/WG 11 N14812
TULVAN Christian Liviu, PREDA Marius
MPEG conformance assets. october 2014, ISBN m35137
abstract
110th MPEG meeting, Strasbourg, France - October 2014 - ISO/IEC JTC 1/SC 29/WG 11 N14812
TULVAN Christian Liviu, PREDA Marius
MPEG content assets. october 2014, ISBN m35139
abstract
110th MPEG meeting, Strasbourg, France - October 2014 - ISO/IEC JTC 1/SC 29/WG 11 N14812
TULVAN Christian Liviu, PREDA Marius
Updated collection of datasets for MTL FU level testing. january 2014, ISBN m32304
abstract
107th MPEG meeting, San José, CA, US - January 2014 - ISO/IEC JTC 1/SC 29/WG 11 N14113
TULVAN Christian Liviu, PREDA Marius
MPEG content assets, 109th MPEG mtg. july 2014
abstract
109th MPEG meeting, Sapporo, JP, July, 2014. - ISO/IEC JTC 1/SC 29/WG 11 N14537
TULVAN Christian Liviu, PREDA Marius
MPEG conformance assets, 109th MPEG mtg. july 2014
abstract
109th MPEG meeting, Sapporo, JP, July, 2014. - ISO/IEC JTC 1/SC 29/WG 11 N14537
TULVAN Christian Liviu, PREDA Marius
MPEG software assets, 109th MPEG mtg. july 2014
abstract
109th MPEG meeting, Sapporo, JP, July, 2014. - ISO/IEC JTC 1/SC 29/WG 11 N14537
TULVAN Christian Liviu, PREDA Marius
Updates on Text of ISO/IEC 23002-5/DAM1 GTL reference software and conformance. july 2014
abstract
109th MPEG meeting, Sapporo, JP, July, 2014. - ISO/IEC JTC 1/SC 29/WG 11 N14537
TULVAN Christian Liviu, PREDA Marius
MPEG Conformance assets, 108th MPEG mtg.. april 2014, ISBN m33264
abstract
108th MPEG meeting, Valencia, ES - April 2014 - ISO/IEC JTC 1/SC 29/WG 11 N14310
TULVAN Christian Liviu, PREDA Marius
MPEG content assets, 108th MPEG mtg. april 2014, ISBN m33266
abstract
108th MPEG meeting, Valencia, ES - April 2014 - ISO/IEC JTC 1/SC 29/WG 11 N14310
TULVAN Christian Liviu, PREDA Marius
MPEG Software assets, 108th MPEG mtg.. april 2014, ISBN m33263
abstract
108th MPEG meeting, Valencia, ES - April 2014 - ISO/IEC JTC 1/SC 29/WG 11 N14310
TULVAN Christian Liviu, PREDA Marius
Updates on RGC (RVC-CAL) : reference software status, 108th MPEG mtg. april 2014, ISBN m33258
abstract
108th MPEG meeting, Valencia, ES - April 2014 - ISO/IEC JTC 1/SC 29/WG 11 N14310
TULVAN Christian Liviu, PREDA Marius
Updates on RGC (RVC-CAL) : reference software status. january 2014, ISBN m32305
abstract
107th MPEG meeting, San José, CA, US - January 2014 - ISO/IEC JTC 1/SC 29/WG 11 N14113
TULVAN Christian Liviu, PREDA Marius
Results for Open3DGC and OpenCTM benchmarking. january 2014, ISBN m32308
abstract
107th MPEG meeting, San José, CA, US - January 2014 - ISO/IEC JTC 1/SC 29/WG 11 N14113
TULVAN Christian Liviu, PREDA Marius
MPEG Software assets. january 2014, ISBN m32309
abstract
107th MPEG meeting, San José, CA, US - January 2014 - ISO/IEC JTC 1/SC 29/WG 11 N14113
ARSOV Ivica, PREDA Marius
Map nodes for Augmented Reality. 2012
[PDF]
abstract
Currently map can be integrated in a scene by using a complex integration of different types of nodes and scripts. However this implementation is not easily extensible, has high performance requirements and requires external software for caching purposes.
PREDA Marius, ARSOV Ivica
Additional use cases for ARAF. 2012
[PDF]
abstract
Augmented Reality and, in general, Mixed Reality combines the real world with a virtual scene and creates an immersive and interactive real-time environment. The possible applications are almost limitless and encompass areas like learning, architecture or industrial production. In the gaming area, AR/MR offers unique opportunities. Unlike with traditional video games, these games are not imprisoned onto the screen but interact with the real world. They incorporate real locations and objects into the game, therefore tapping into already existing thoughts and emotions of the player, which in turn creates a potentially much richer gaming world and experience. Mobile AR/MR Gaming even goes a step further as the playing area becomes borderless and games can be played literally anywhere and anytime. With the current advancement of modern cell phone technology, we are identifying the potential of Mobile AR/MR Games being played by anyone.
TULVAN Christian Liviu, PREDA Marius
Software Implementation for GTL FUs. 2012
[PDF]
abstract
The GLT configuration includes:
- GTL Processing FUs
- GTL Utility FUs
- GTL Auxiliary FUs
TULVAN Christian Liviu, PREDA Marius
Conventions for GTL FU specification. 2012
[PDF]
abstract
The FU description
TULVAN Christian Liviu, PREDA Marius
Network configurations for SC3DMC decoders. 2012
[PDF]
abstract
The document contains the partial schematic of the SC3DMC - TFAN decoder based on the FUs in the GTL.
TULVAN Christian Liviu, PREDA Marius
Updates for Inverse Prediction FU of Graphics Codec. 2012
[PDF]
abstract
Process Parallelogram Inverse Prediction Schematic
TULVAN Christian Liviu, PREDA Marius
Processing FUs for SC3DMC. 2012
[PDF]
abstract
Adaptive Data Model Generate Alphabet - Update Process
TULVAN Christian Liviu, PREDA Marius
Provider FUs for GTL. 2012
[PDF]
abstract
The Provider FU is a particular type of FU that can be used to insert a pre-computed data (such as Look-Up-Tables) needed by the FUs in the network. The values are pre-loaded and stored in the FU as local data. It only has output ports and it starts generating the output tokens as soon as the network is configured and started. There are no restrictions on how the data is pre-loaded.
CHIARIGLIONE Filippo , TIMMERER Christian , RODRÍGUEZ DONCEL Víctor, PREDA Marius
Ad Hoc Group on MXM, m17095. january 2010
abstract
Report from the 91st meeting of the International Organisation for Standardisation, ISO/IEC JTC 1/SC 29/WG 11 N11077, MPEG2010/M170195, Kyoto, JP
ARSOV Ivica, PREDA Marius
Integrated MXM API for 3D graphics. april 2009, ISBN m16427
abstract
Report of 88th MPEG Meeting, ISO/IEC JTC 1/SC 29/WG 11, coding of moving pictures and audio - Maui(HI)
ARSOV Ivica, PREDA Marius, PRETEUX Francoise
MXM API for 3D Graphics content creation. february 2009, ISBN m16151
abstract
Report of 87th meeting, ISO/IEC JTC 1/SC 29/WG 11, coding of moving pictures and audio, Lausanne (CH)
CHIARIGLIONE Filippo , TIMMERER Christian , RODRÍGUEZ DONCEL Víctor, PREDA Marius
Ad Hoc Group on MXM, m16253. april 2009
abstract
Report from the 88th meeting of the International Organisation for Standardisation, ISO/IEC JTC 1/SC 29/WG 11 N10520, MPEG2009/M16253, Maui, HI
CHIARIGLIONE Filippo , TIMMERER Christian , RODRÍGUEZ DONCEL Víctor, PREDA Marius
Ad Hoc Group on MXM, m16511. july 2009
abstract
Report from the 89th meeting of the International Organisation for Standardisation, ISO/IEC JTC 1/SC 29/WG 11 N10698, MPEG2009/M16511, London, UK
CHIARIGLIONE Filippo , TIMMERER Christian , RODRÍGUEZ DONCEL Víctor, PREDA Marius
Ad Hoc Group on MXM, m16784. october 2009
abstract
Report from the 90th meeting of the International Organisation for Standardisation, ISO/IEC JTC 1/SC 29/WG 11 N10876, MPEG2009/M16784, Xi'an, CN
JOVANOVA Blagica, PREDA Marius, PRETEUX Francoise
Avatar characteristics. april 2009, ISBN m16425
abstract
Report of the 88th MPEG Meeting, ISO/IEC JTC 1/SC 29/WG 11, coding of moving pictures and audio - Maui(HI)
JOVANOVA Blagica, PREDA Marius, PRETEUX Francoise
Selecting elementary streams in MP25 RefSoft. february 2009
abstract
Report of 87th meeting, ISO/IEC JTC 1/SC 29/WG 11, coding of moving pictures and audio, Lausanne (CH)
LE BONHOMME Benoit, PREDA Marius, PRETEUX Francoise
MMW.com API extension for 3D graphics attributes . february 2009, ISBN m16150
abstract
Report of 87th meeting, ISO/IEC JTC 1/SC 29/WG 11, coding of moving pictures and audio, Lausanne (CH)
LE BONHOMME Benoit, PREDA Marius, PRETEUX Francoise
Scalable complexity mesh coding benchmark . february 2009, ISBN m16149
abstract
Report of 87th meeting, ISO/IEC JTC 1/SC 29/WG 11, coding of moving pictures and audio, Lausanne (CH)
MAMOU Khaled, ZAHARIA Titus, PREDA Marius, PRETEUX Francoise
TFAN bitstream syntax update. april 2009, ISBN m16435
abstract
Report of 88th MPEG Meeting, ISO/IEC JTC 1/SC 29/WG 11, coding of moving pictures and audio - Maui(HI)
MAMOU Khaled, ZAHARIA Titus, PREDA Marius, PRETEUX Francoise
SC3DMC Reference software update. october 2009, ISBN m17061
abstract
Report of 90th MPEG Meeting, ISO/IEC JTC 1/SC 29/WG 11, coding of moving pictures and audio - Xi'an (CN)
PREDA Marius
Editor comments on AFX 3rd edition. april 2009, ISBN m16478
abstract
Report of 88th MPEG Meeting, ISO/IEC JTC 1/SC 29/WG 11, coding of moving pictures and audio - Maui(HI)
PREDA Marius
Ad Hoc Group on MPEG-V. july 2009, ISBN m16512
abstract
Report of the 89th MPEG Meeting, ISO/IEC JTC 1/SC 29/WG 11, coding of moving pictures and audio - London (UK)
PREDA Marius
Ad Hoc Group on MPEG-V, m16785. october 2009, ISBN m16785
abstract
Report of 90th MPEG Meeting, ISO/IEC JTC 1/SC 29/WG 11, coding of moving pictures and audio - Xi'an (CN)
PREDA Marius, AHN Jeong-Hwan, GIOIA Patrick
ISO/IEC 14496 [MPEG-4] Part 16 : Animation Framework eXtension (AFX). december 2009
[PDF]
abstract
ISO/IEC 14496-16:2009 specifies MPEG-4 Animation Framework eXtension (AFX) model for representing and encoding 3D graphics assets to be used standalone or integrated in interactive multimedia presentations (the latter when combined with other parts of MPEG-4). Within this model, MPEG-4 is extended with higher-level synthetic objects for geometry, texture, and animation as well as dedicated compressed representations
PREDA Marius, JOVANOVA Blagica, PRETEUX Francoise
Animation update for avatar characteristics. october 2009, ISBN m17008
abstract
Report of 90th MPEG Meeting, ISO/IEC JTC 1/SC 29/WG 11, coding of moving pictures and audio - Xi'an (CN)
ALLASIA Walter, ANDRADE Maria Teresa , BOBER Miroslaw , CASTRO Hélder , CHEN Jianping , CHIARIGLIONE Filippo , COSENZA Giacomo (Mimmo), DELGADO Jaime , DIFINO Angelo , DONCEL Víctor Rodríguez , GALLO Francesco , GAUVIN Marc , HUANG Tiejun , LEE Jooyoung , LIM Young Kwon, KROPP Denis Oliver , MATTAVELLI Marco , MILANESIO Marco , NAITO Joji , PREDA Marius, RUFFO Giancarlo, SCHIFANELLA Rossano , SPRINGER Martin , TIMMERER Christian , WANG Xin
Proposal of MXM technologies. july 2008, ISBN m15689
abstract
MPEG 85 : 85th Meeting Moving Picture Experts Group, July 21-25, Hannover, Germany. Report ISO/IEC JTC 1/SC 29/WG 11 N9963
ALLASIA Walter, ANDRADE Maria Teresa , BOBER Miroslaw , CASTRO Hélder , CHEN Jianping , CHIARIGLIONE Filippo , COSENZA Giacomo (Mimmo), DELGADO Jaime , DIFINO Angelo , DONCEL Víctor Rodríguez , GALLO Francesco , GAUVIN Marc , HUANG Tiejun , LEE Jooyoung , LIM Young Kwon, KROPP Denis Oliver , MATTAVELLI Marco , MILANESIO Marco , NAITO Joji , PREDA Marius, RUFFO Giancarlo, SCHIFANELLA Rossano , SPRINGER Martin , TIMMERER Christian , WANG Xin
Response to MXM call for proposals. july 2008, ISBN m15686
abstract
MPEG 85 : 85th Meeting Moving Picture Experts Group, July 21-25, Hannover, Germany. Report ISO/IEC JTC 1/SC 29/WG 11 N9963
ALLASIA Walter, ANDRADE Maria Teresa , BOBER Miroslaw , CASTRO Hélder , CHEN Jianping , CHIARIGLIONE Filippo , COSENZA Giacomo (Mimmo), DELGADO Jaime , DIFINO Angelo , DONCEL Víctor Rodríguez , GALLO Francesco , GAUVIN Marc , HUANG Tiejun , LEE Jooyoung , LIM Young Kwon, KROPP Denis Oliver , MATTAVELLI Marco , MILANESIO Marco , NAITO Joji , PREDA Marius, RUFFO Giancarlo, SCHIFANELLA Rossano , SPRINGER Martin , TIMMERER Christian , WANG Xin
Proposal of MXM API. july 2008, ISBN m15689
abstract
Report of the 85th Meeting Moving Picture Experts Group, July 21-25, Hannover, Germany, 2008
ALLASIA Walter, ANDRADE Maria Teresa , BOBER Miroslaw , CASTRO Hélder , CHEN Jianping , CHIARIGLIONE Filippo , COSENZA Giacomo (Mimmo), DELGADO Jaime , DIFINO Angelo , DONCEL Víctor Rodríguez , GALLO Francesco , GAUVIN Marc , HUANG Tiejun , LEE Jooyoung , LIM Young Kwon, KROPP Denis Oliver , MATTAVELLI Marco , MILANESIO Marco , NAITO Joji , PREDA Marius, RUFFO Giancarlo, SCHIFANELLA Rossano , SPRINGER Martin , TIMMERER Christian , WANG Xin
Collection of MXM use cases. july 2008, ISBN m15687
abstract
MPEG 85 : 85th Meeting Moving Picture Experts Group, July 21-25, Hannover, Germany. Report ISO/IEC JTC 1/SC 29/WG 11 N9963
ARSOV Ivica, PREDA Marius, PRETEUX Francoise
MPEG-4 3D graphics player for N93 and N95. january 2008, ISBN m15087
abstract
MPEG 83 : 83th Meeting Moving Picture Experts Group, January 14-18 , Antalya, Turkey. Report ISO/IEC JTC 1/SC 29/WG 11 N9558
ARSOV Ivica, PREDA Marius, PRETEUX Francoise
Implementation of 3D graphics MXM. october 2008, ISBN m15822
abstract
MPEG 86 : 86th Meeting Moving Picture Experts Group, October 13-17, Busan, Korea. Report ISO/IEC JTC 1/SC 29/WG 11 N10115
CALLOW Mark, KANEKO Itaru, CLARK Richard, PREDA Marius, MORAN BURGOS Francisco
Guide to the MPEG subversion repository. july 2008, ISBN m15520
abstract
Report of 85th meeting, ISO/IEC JTC 1/SC 29/WG 11 N9963, coding of moving pictures and audio, Hannover, DE
CALLOW Mark, KANEKO Itaru, CLARK Richard, PREDA Marius, MORAN BURGOS Francisco
MPEG subversion repository. april 2008
abstract
Report from the 84th meeting of the International Organisation for Standardisation, ISO/IEC JTC 1/SC 29/WG 11 N9740, MPEG2008/M15470, Archamps, FR
CHIARIGLIONE Filippo , PREDA Marius
Ad Hoc Group on MXM, m15951. february 2008
abstract
Report from the 87th meeting of the International Organisation for Standardisation, ISO/IEC JTC 1/SC 29/WG 11 N10314, MPEG2008/M15951, Lausanne, CH
GELISSEN Jean, PREDA Marius, MITSUBUCHI Keiji
Ad Hoc Group on information exchange with virtual worlds [October 2008]. october 2008, ISBN m15722
abstract
MPEG 86 : 86th Meeting Moving Picture Experts Group, October 13-17, Busan, Korea. Report ISO/IEC JTC 1/SC 29/WG 11 N10115
GELISSEN Jean, PREDA Marius
Ad Hoc Group on information exchange with virtual worlds [April 2008]. april 2008, ISBN m15229
abstract
MPEG 84 : 84th Meeting Moving Picture Experts Group, April 26 - May 2, Archamps, France. Report ISO/IEC JTC 1/SC 29/WG 11 N9740
GELISSEN Jean, PREDA Marius
Ad Hoc Group on information exchange with virtual worlds [July 2008]. july 2008, ISBN m15503
abstract
MPEG 85 : 85th Meeting Moving Picture Experts Group, July 21-25, Hannover, Germany. Report ISO/IEC JTC 1/SC 29/WG 11 N9963
GIOIA Patrick, ARSOV Ivica, PREDA Marius
Errors in V7 and V8 nodes for BIFS. april 2008, ISBN m15441
abstract
MPEG 84 : 84th Meeting Moving Picture Experts Group, April 26 - May 2, Archamps, France. Report ISO/IEC JTC 1/SC 29/WG 11 N9740
JOVANOVA Blagica, PREDA Marius
New conformance for P25. april 2008, ISBN m15442
abstract
MPEG 84 : 84th Meeting Moving Picture Experts Group, April 26 - May 2, Archamps, France. Report ISO/IEC JTC 1/SC 29/WG 11 N9740
JOVANOVA Blagica, PREDA Marius, PRETEUX Francoise
Software implementation for MPEG-4 part 25. october 2008, ISBN m15823
abstract
MPEG 86 : 86th Meeting Moving Picture Experts Group, October 13-17, Busan, Korea. Report ISO/IEC JTC 1/SC 29/WG 11 N10115
JOVANOVA Blagica, PREDA Marius, PRETEUX Francoise
Software implementation for P25. january 2008
abstract
Report from the 83rd meeting of the International Organisation for Standardisation, ISO/IEC JTC 1/SC 29/WG 11 N9558, MPEG2008/M15085, Antalya, TR
JOVANOVA Blagica, PREDA Marius, PRETEUX Francoise
Conformance dataset for P25. january 2008
abstract
Report from the 83rd meeting of the International Organisation for Standardisation, ISO/IEC JTC 1/SC 29/WG 11 N9558, MPEG2008/M15086, Antalya, TR
LE BONHOMME Benoit, PREDA Marius, PRETEUX Francoise
Benchmarking results for Scalable Complexity Mesh Compression . october 2008
abstract
Several new filters are proposed for better benchmarking local and global compression results. ZIP compression is introduces for reference. New results for 3DMC, TFAN and TG are presented. 86th meeting of the International Organisation for Standardisation, ISO/IEC JTC 1/SC 29/WG 11 N10115, MPEG2008/M15824, Busan, KR
LE BONHOMME Benoit, PREDA Marius, PRETEUX Francoise
Online platform for 3D graphics compression benchmarking. january 2008, ISBN M15084
abstract
ISO report of 83rd meeting,ISO/IEC JTC 1/SC 29/WG 11 N9558, Antalya, TR. MPEG2008/M15084
LE BONHOMME Benoit, PREDA Marius, PRETEUX Francoise
Update of the API for 3D compression benchmark with MyMultimediaWorld.com. july 2008
abstract
A new version of the API is proposed in order to easy the use of MMW.com. The encoding parameters can be set in a textual file, that will be provided together with the encoder. The performances issues were discussed and libraries are compiled in Release mode. 85th meeting of the International Organisation for Standardisation, ISO/IEC JTC 1/SC 29/WG 11 N9963, MPEG2008/M15654, Hannover, DE
MAMOU Khaled, ZAHARIA Titus, PREDA Marius, PRETEUX Francoise
Low-complexity approach for static mesh compression . january 2008
abstract
Report from the 83rd meeting of the International Organisation for Standardisation, ISO/IEC JTC 1/SC 29/WG 11 N9558, MPEG2008/M15153, Antalya, TR
MAMOU Khaled, ZAHARIA Titus, PREDA Marius, PRETEUX Francoise
Encoder implementation for FAMC. july 2008, ISBN m15683
abstract
MPEG 85 : 85th Meeting Moving Picture Experts Group, July 21-25, Hannover, Germany. Report ISO/IEC JTC 1/SC 29/WG 11 N9963
MAMOU Khaled, ZAHARIA Titus, PREDA Marius, PRETEUX Francoise
TFAN software description. july 2008, ISBN m15653
abstract
MPEG 85 : 85th Meeting Moving Picture Experts Group, July 21-25, Hannover, Germany. Report ISO/IEC JTC 1/SC 29/WG 11 N9963
MAMOU Khaled, ZAHARIA Titus, PREDA Marius, PRETEUX Francoise
FAMC integration into the MPEG-4 RefSoft . january 2008, ISBN M15150
abstract
The contribution presents the implementation of FAMC in IM1 indicating the supported functionalities. A demonstration of the reference software was shown. 83rd meeting of the International Organisation for Standardisation, ISO/IEC JTC 1/SC 29/WG 11 N9558, MPEG2008/M15150, Antalya, TR
MAMOU Khaled, ZAHARIA Titus, PREDA Marius, PRETEUX Francoise
TFAN stream description. october 2008, ISBN m15825
[PDF]
abstract
MPEG 86 : 86th Meeting Moving Picture Experts Group, October 13-17, Busan, Korea. Report ISO/IEC JTC 1/SC 29/WG 11 N10115
MORAN BURGOS Francisco, PREDA Marius
Source code status for 3D graphics encoders. april 2008
abstract
Report from the 84th meeting of the International Organisation for Standardisation, ISO/IEC JTC 1/SC 29/WG 11 N9740, MPEG2008/M15439, Archamps, FR
Communication dans une conférence sans acte ou actes à diffusion limitée (25)
PREDA Marius
Advances and standardization in point cloud compression. IBC 2018: a Masterclass in VR Technology and Industry, 16-16 september 2018, Amsterdam, Netherlands, 2018
abstract
Advances and standardization in point cloud compression
PREDA Marius
TV Centric Connected Home. Smart TV Global Summit 2015, 10-10 november 2015, Seoul, Korea, Republic Of, 2015
abstract
Some ideas of how to bring the television closer to the web advancements, while preserving its own mission. Additionally, a set of MPEG tools covering aspects such as visual search, multimedia linking and multi-sensory experiences are also introduced
ARSOV Ivica, PREDA Marius
Using MPEG-4 for mobile mixed reality applications. 95th meeting of MPEG, 24-28 january 2011, Daegu, Korea, Dem. People'S Rep. Of, 2011
[PDF]
abstract
The goal of this contribution is to present how the MPEG-4 standard can be used to create mobile mixed reality applications. Furthermore it will show how some functions, not natively supported by MPEG-4, were ensured by additional components.
ARSOV Ivica, PREDA Marius
Augmented reality in MPEG scenes. 97th meeting of MPEG, 18-22 july 2011, Torino, Italy, 2011
[PDF]
abstract
The goal of this contribution is to present how the MPEG-4 standard can be used to create mobile Augmented Reality (AR) applications. It specifies the needed components for AR applications and proposes updates to the MPEG standard in order to support them.
ARSOV Ivica, LE FEUVRE Jean, PREDA Marius
Camera integration for augmented reality in MPEG scenes. 98th meeting of MPEG, 28 november - 02 december 2011, Genève, Switzerland, 2011
[PDF]
abstract
The goal of this contribution is to present an update on the URL description for accessing camera data in MPEG-4 scenes.
PREDA Marius
Augmented reality definition and functionalities. 96th meeting of MPEG, 21-25 march 2011, Genève, Switzerland, 2011
[PDF]
abstract
Augmented reality applications refer to a live view of a real-world environment whose elements are augmented by computer-generated content, such as sound or graphics.
PREDA Marius
Ad hoc group on MPEG-V. 95th meeting of MPEG, 24-28 january 2011, Daegu, Korea, Dem. People'S Rep. Of, 2011
[PDF]
abstract
Mandates:
1. Continue editing of WDs of ISO/IEC 23005
2. Solicit and prepare contributions to improve the working drafts
3. Make preparation for MPEG-V Awareness Event in Daegu
TULVAN Christian Liviu, PREDA Marius
FU-level testing for the RGC framework. 97th meeting of MPEG, 18-22 july 2011, Torino, Italy, 2011
[PDF]
abstract
In the GTL (Graphics Tool Library) development process, as part of RGC, a way to investigate a FU is necessary. We propose the introduction of a new type of FUs that can dump the input data into a file and also repeat the input data at the output (this way by introducing this FU in the design, the network can still work).
TULVAN Christian Liviu, PREDA Marius
Parameterizable FUs (N-dimensional). 97th meeting of MPEG, 18-22 july 2011, Torino, Italy, 2011
[PDF]
abstract
In the development of the GTL (Graphics Tool Library) as part of RGC, there could be more than one FU (Functional Unit) that implements the same operation but consumes a different number of tokens at each firing. If the consumed data is independet, this type of approach can create confusion for the designer of the network that implements the encoder or decoder.
TULVAN Christian Liviu, PREDA Marius
Proposal for SC3DMC : functional units and QBCR network configuration. 96th meeting of MPEG, 21-25 march 2011, Genève, Switzerland, 2011
[PDF]
abstract
In order to determine if a textual description provides enough information for an implementation without ambiguities, an analysis of the additional information provided by a data-flow implementation is needed. The analysis should determine if a data-flow design overview provides enough information that eliminates all the presumed ambiguities.
TULVAN Christian Liviu, PREDA Marius
Processing FUs for SC3DMC. 98th meeting of MPEG, 28 november - 02 december 2011, Genève, Switzerland, 2011
[PDF]
abstract
Update first document --> List of token types.
TULVAN Christian Liviu, PREDA Marius
Parser for SC3DMC. 98th meeting of MPEG, 28 november - 02 december 2011, Genève, Switzerland, 2011
[PDF]
abstract
It is mandatory to have all the necessary input tokens available (dataIn_i) in order to produce the output tokens as shown in the FSM figure. It is necessary to have a number of 30 input tokens (dataIn) in order to start decoding the header.
TULVAN Christian Liviu, PREDA Marius
SC3DMC FUs for the RGC framework. 97th meeting of MPEG, 18-22 july 2011, Torino, Italy, 2011
[PDF]
abstract
The objective of this contribution is to propose a set of FUs dedicated to the decoding of 3D static meshes. It is structured as follows. In section 2, we introduce the general purpose FUs, dedicated to classic decoding functions such as inverse quantization and inverse prediction. Section 3 introduces the parser of a dedicated coding scheme, namely Scalability Complexity 3D Mesh Coding. Section 4 concludes our contribution.
TULVAN Christian Liviu, PREDA Marius
Preliminary design of BBA FUs. 98th meeting of MPEG, 28 november - 02 december 2011, Genève, Switzerland, 2011
[PDF]
abstract
Preliminary design of BBA FUs.
TULVAN Christian Liviu, PREDA Marius
New MPEG SVN structure. 98th meeting of MPEG, 28 november - 02 december 2011, Genève, Switzerland, 2011
[PDF]
abstract
We propose the following structure for the MPEG SVN.
TULVAN Christian Liviu, PREDA Marius
Codage graphique reconfigurable pour maillage 3D. TAIMA ' 11 : Traitement et Analyse de l'Information Méthodes et Applications, 03-08 octobre 2011, Hammamet, Tunisie, 2011
[PDF]
abstract
L'objectif de cet article est d'introduire le concept de codeur graphique reconfigurable et de présenter une librairie des unités fonctionnelles permettant le décodage des objets graphiques 3D. L'hétérogénéité de la représentation (non-compressée) des objets graphiques 3D rendent nécessaire la coexistence d'une multitude des schémas de compression, une spécifique pour chaque représentation. Même si intrinsèquement ces schémas partagent les mêmes composantes classiques de traitement de signal, il est impossible aujourd'hui de les rendre interopérables. Nous proposons de résoudre ce problème par l'identification des unités fonctionnelles qui seront connectées qu'au moment de décodage sur la base d'une information qui va accompagner le bitstream à décoder. Ce principe permet par ailleurs l'implantation spécifique des unités fonctionnelles et la gestion optimisée du calcul par rapport à l'architecture matérielle (CPU, GPU, FPGA, …).
TULVAN Christian Liviu, PREDA Marius
Preliminary results for SC3DMC implementation using RVC-CAL. 95th meeting of MPEG, 24-28 january 2011, Daegu, Korea, Dem. People'S Rep. Of, 2011
[PDF]
abstract
In order to determine if a textual description provides enough information for an implementation without ambiguities, an analysis of the additional information provided by a data-flow implementation is needed. The analysis should determine if a data-flow design overview provides enough information that eliminates all the presumed ambiguities.
TULVAN Christian Liviu, PREDA Marius
Updates for inverse prediction FU of graphics codec. 98th meeting of MPEG, 28 november - 02 december 2011, Genève, Switzerland, 2011
[PDF]
abstract
Token description.
ARSOV Ivica, NGO Van Luyen, PREDA Marius
FootPrint API for MXM. 91st MPEG Meeting, 18-22 january 2010, Kyoto, Japan, 2010
abstract
An update of the mediaFramework API that supports access and creation of MPEG-4 content including FootPrint is proposed.
MAMOU Khaled, ZAHARIA Titus, PREDA Marius, PRETEUX Francoise
SC3DMC integration into IM1. 91st MPEG Meeting, 18-22 january 2010, Kyoto, Japan, 2010
abstract
A new version of IM1 including SC3DMC is updated and is available on the SVN. The full set of conformance bitstreams is generated.
PREDA Marius
Streaming needs for MPEG-V. 91st MPEG Meeting, 18-22 january 2010, Kyoto, Japan, 2010
abstract
The contribution proposes a binary format for updating the sensor/actuators data. It consists in an update mask that should be standardized for each sensor type. The mask indicates which component of the sensor/actuator data should be updated at each frame. The new values are transmitted into an array of update values. Notes: Current definition of the base types includes the timing information. The alternatives solutions are to use TeM which is a mechanism standardized in MPEG-7 Part 1 for transmitting and updating XML instances. There exists as well a binary equivalent for BiM (MPEG-B Part 1). The streaming feature in MPEG-V should be addressed considering the need of compactness and easiness of building the applications. Provide a comparative list of advantages and disadvantages between the solution based on update mask and TeM.
PREDA Marius
Ad Hoc Group on MPEG-V. 91st MPEG Meeting, 18-22 january 2010, Kyoto, Japan, 2010
abstract
ISO/IEC JTC 1/SC 29/WG 11
PREDA Marius
Support for classification scheme for avatar control in MPEG-V Part 4. 93rd MPEG Meeting, 26-30 july 2010, Geneve, Switzerland, 2010
PREDA Marius, JOVANOVA Blagica
Support for extra features for avatar characteristics. 93rd MPEG Meeting, 26-30 july 2010, Geneve, Switzerland, 2010
PREDA Marius, JOVANOVA Blagica
Profiles for avatars interoperability. 93rd MPEG Meeting, 26-30 july 2010, Geneve, Switzerland, 2010
abstract
What a profile could be, investigate what is the meaning a profile in MPEG-V, AhG mandate on introducing more profiles. Put the current profiles in an output document.
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