Analysis-synthesis Scheme Using Active Meshes for Wavelet Video Coding

This article presents an analysis-synthesis scheme using 2D deformable meshes for video coding. The analysis stage allows to decouple the motion from the texture and to code each information independently. The motion is represented by a 2D deformable mesh which provides long term tracking of the texture. The texture frames are extracted by motion-compensating the frames on a reference grid and are represented as a t+2D volume of datas free from motion. The complete decoupling of the motion and the texture allows to code the motion with loss with no impact on the texture coding and to pass the coding gain on the texture to improve the visual quality of the reconstructed sequence. Our scheme performs as well as the H264/AVC video coder on some sequences and offers several functionnalities such as scalability, video object coding, 3D reconstruction, etc...