Wavelet-based Compression of 3D Mesh Sequences

Overview & Synopsis

We present an original wavelet-based compression algorithm for sequences of 3D meshes with fixed connectivity. This algorithm, based on a temporal lifting scheme exploits the high temporal coherence of the geometry of successive frames in order to reduce the information needed to represent the original sequence. The resulting sets of wavelet coefficients are then optimally quantized by the mean of a bit allocation process. The proposed allocation process allows to dispatch the bit budget across the wavelet sequences according to their influence on the quality of the reconstructed sequence for one specific user-given bitrate. Simulation results show that the proposed algorithm provides better compression performances than some state of the art coders.