Rate-distortion Optimized Progressive Geometry Compression
率-失真优化的渐进几何压缩

A novel scheme for rate-distortion(R-D)optimized progressive geometry compression is proposed.According to the non-uniform distribution of the model details,the model details are grouped into blocks,and each block is encoded independently.The encoded bit-streams of the blocks are assembled into a code stream based on R-D optimization,which ensures allocating bitrates to the blocks with richer details preferentially.Experimental results show that the proposed algorithm,compared with the well-known PGC,provides PSNR improvements by about 2.25 dB at low bitrate.Moreover, the scheme provides a new approach to realize region of interest(ROI)coding of 3D meshes efficiently.