MPEG-4 Part 25: A graphics compression framework for XML-based scene graph formats

Jovanova, Blagica; Preda, Marius; Prêteux, Françoise

doi:10.1016/j.image.2008.10.011

Cited by 13 publications

(7 citation statements)

References 47 publications

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“…The MPEG-4 Codecs were compiled from source code as available at [22] with the MS Visual Studio 2010 compiler. To avoid overhead of MPEG-4 part 25 that deals with loading the supported text formats [23] (XMT/Collada), we interfaced directly the class SC3DMCEncoder and SC3DMCDecoder with an MPEG indexed face set structure that is loaded directly from the input mesh. This way any overhead delays in accessing the MPEG SC3DMC codec are avoided.…”

Section: Resultsmentioning

confidence: 99%

Enabling Geometry-Based 3-D Tele-Immersion With Fast Mesh Compression and Linear Rateless Coding

Mekuria

Sanna

Izquierdo

et al. 2014

IEEE Trans. Multimedia

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3-D tele-immersion (3DTI) enables participants in remote locations to share, in real time, an activity. It offers users interactive and immersive experiences, but it challenges current media-streaming solutions. Work in the past has mainly focused on the efficient delivery of image-based 3-D videos and on realistic rendering and reconstruction of geometry-based 3-D objects. The contribution of this paper is a real-time streaming component for 3DTI with dynamic reconstructed geometry. This component includes both a novel fast compression method and a rateless packet protection scheme specifically designed towards the requirements imposed by real time transmission of live-reconstructed mesh geometry. Tests on a large dataset show an encoding speed-up up to ten times at comparable compression ratio and quality, when compared with the high-end MPEG-4 SC3DMC mesh encoders. The implemented rateless code ensures complete packet loss protection of the triangle mesh object and a delivery delay within interactive bounds. Contrary to most linear fountain codes, the designed codec enables real-time progressive decoding allowing partial decoding each time a packet is received. This approach is compared with transmission over TCP in packet loss rates and latencies, typical in managed WAN and MAN networks, and heavily outperforms it in terms of end-to-end delay. The streaming component has been integrated into a larger 3DTI environment that includes state of the art 3-D reconstruction and rendering modules. This resulted in a prototype that can capture, compress transmit, and render triangle mesh geometry in real-time in realistic internet conditions as shown in experiments. Compared with alternative methods, lower interactive end-to-end delay and frame rates over three times higher are achieved.

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Section: Resultsmentioning

confidence: 99%

Enabling Geometry-Based 3-D Tele-Immersion With Fast Mesh Compression and Linear Rateless Coding

Mekuria

Sanna

Izquierdo

et al. 2014

IEEE Trans. Multimedia

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“…It has to be noted, however, that the object based representation used here is not optimized. Even existent coding schemes for objects can create an additional compression factor of up to 70 [11].…”

Section: Discussionmentioning

confidence: 99%

Analysis of object based and pixel based video representation

Wnschmann

Schleicher

Rothermel

2010

IEEE International Symposium on Consumer Electronics (ISCE 2010)

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This paper introduces ideas for a different representation of video material. Instead of traditional, pixel based video storage and compression, the investigation is directed towards an object based video representation which introduces less quality loss during the transmission path and may remarkably lower the data rate. Therefore, we compare both representations in terms of data rate and quality.

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“…First, live-captured full geometry (triangle mesh / point clouds) can be delivered. In particular, we use octree compression for point clouds [15] (available in PCL) and MPEG-4 SC3DMC coding [18] for triangle meshes. Second, MPEG BBA/AFX is used for transmitting motion commands, if a model-based representation (e.g.…”

Section: Real-time Streamingmentioning

confidence: 99%

A framework for realistic 3D tele-immersion

Fechteler

Hilsmann

Eisert

et al. 2013

Proceedings of the 6th International Conference on Computer Vision / Computer Graphics Collaboration Techniques and Application

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Meeting, socializing and conversing online with a group of people using teleconferencing systems is still quite different from the experience of meeting face to face. We are abruptly aware that we are online and that the people we are engaging with are not in close proximity. Analogous to how talking on the telephone does not replicate the experience of talking in person. Several causes for these differences have been identified and we propose inspiring and innovative solutions to these hurdles in attempt to provide a more realistic, believable and engaging online conversational experience. We present the distributed and scalable framework REVERIE that provides a balanced mix of these solutions. Applications build on top of the REVERIE framework will be able to provide interactive, immersive, photo-realistic experiences to a multitude of users that for them will feel much more similar to having face to face meetings than the experience offered by conventional teleconferencing systems.

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MPEG-4 Part 25: A graphics compression framework for XML-based scene graph formats

Cited by 13 publications

References 47 publications

Enabling Geometry-Based 3-D Tele-Immersion With Fast Mesh Compression and Linear Rateless Coding

Enabling Geometry-Based 3-D Tele-Immersion With Fast Mesh Compression and Linear Rateless Coding

Analysis of object based and pixel based video representation

A framework for realistic 3D tele-immersion

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