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Communication Dans Un Congrès Année : 2008

Frame-based compression of animated meshes in MPEG-4

Résumé

This paper presents a new compression technique for 3D dynamic meshes, referred to as FAMC - Frame-based Animated Mesh Compression, recently promoted within the MPEG-4 standard as Amendement 2 of part 16 AFX (Animation Framework eXtension). The FAMC approach combines a model-based motion compensation strategy, with transform/predictive coding of residual errors. First, a skinning motion compensation model is automatically computed from a frame-based representation and then encoded. Subsequently, either 1) DCT/lifting wavelets or 2) layer-based predictive coding is employed to exploit remaining spatio-temporal correlations in the residual signal. The proposed encoder offers high compression performances (gains in bit rate of 60% with respect to the previous MPEG-4 technique and of 20% to 40% with respect to state-of-the-art approaches) and is well suited for compressing both geometric and photometric (normal vectors, colors...) attributes. In addition, the FAMC method supports a rich set of functionalities including streaming, scalability (spatial, temporal and quality) and progressive transmission
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Dates et versions

hal-01375804 , version 1 (03-10-2016)

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Citer

Khaled Mamou, Titus Zaharia, Francoise Preteux, N. Stefanoski, J. Ostermann. Frame-based compression of animated meshes in MPEG-4. ICME 2008 : IEEE International Conference on Multimedia and Expo, Jun 2008, Hannover, Germany. pp.1121 - 1124, ⟨10.1109/ICME.2008.4607636⟩. ⟨hal-01375804⟩
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