How to Construct an MPEG4 API: A Videoconference Application Example
L. Peyronny, O. Soligon, C. Roux, O. Avaro, T. Blu
Proceedings of the International Conference on Image and Multidimensional Digital Signal Processing (IMDSP '98), Alpbach , Republic of Austria, July 16, 1998, pp. 111–114.
The construction and animation of face-objects in MPEG-4/SNHC (synthetic natural hybrid coding) systems implies content-based and semantic analysis of the observed 3D scene. These processes require sophisticated image processing tools and algorithms which are time-consuming and also not so suitable for videoconferencing applications. With regard to the coding process following the MPEG-4 standard, it is shown that 4 possible levels of coding are ready-to-send in an MPEG-4 data stream. The main functionalities sought in the MPEG-4 standard are data scalability, user data interactivity and opening to various kinds of coder schemes. With non-high-order semantic interpretation of the observed scene, it is well-known that it is possible to build and animate a facial 3D model. A transcoding system is then needed to fit to the MPEG-4 data stream format.
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AUTHOR="Peyronny, L. and Soligon, O. and Roux, C. and Avaro, O. and
Blu, T.",
TITLE="How to Construct an {MPEG4} {API}: {A} Videoconference
Application Example",
BOOKTITLE="Proceedings of the International Conference on Image and
Multidimensional Digital Signal Processing ({IMDSP'98})",
YEAR="1998",
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pages="111--114",
address="Alpbach, Republic of Austria",
month="July 16,",
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