DocumentCode :
2346792
Title :
Rate-Distortion Optimized Progressive Geometry Compression
Author :
Wenbo, Zhang ; Bo, Liu ; Hongbin, Zhang
Author_Institution :
Comput. Inst., Beijing Univ. of Technol.
fYear :
2006
fDate :
26-28 July 2006
Firstpage :
207
Lastpage :
210
Abstract :
During progressive transmission of 3D geometry models, the transmission order of details at different region has great effects on the quality of reconstructed models at low bit-rate. This work presents a rate-distortion (R-D) optimized progressive geometry compression scheme to improve the quality of reconstructed models by adjusting the transmission order of details. In this scheme, the input mesh is partitioned into parts, then each part is encoded into bit-stream independently, and the encoded bit-streams are truncated into segments while getting the R-D characteristics of every segment, at last all segments are assembled into a codestream based on R-D optimization, which ensure the region with rich detail are transmitted early and make the reconstructed mesh achieve better quality as soon as possible. Experimental results show that, as compared with the well-known PGC method, the proposed one provides better R-D performance. Moreover, it provides a novel way to realize the region of interest (ROI) coding of 3D meshes
Keywords :
computational geometry; data compression; mesh generation; optimisation; rate distortion theory; solid modelling; 3D geometry model; mesh reconstruction; progressive geometry compression; rate-distortion optimization; Assembly; Bandwidth; Computational geometry; Decoding; Graphics; Partitioning algorithms; Rate-distortion; Solid modeling; Wavelet coefficients; Wavelet transforms; Mesh partition; Progressive; Rate-distortion optimization; compression;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Computer Graphics, Imaging and Visualisation, 2006 International Conference on
Conference_Location :
Sydney, Qld.
Print_ISBN :
0-7695-2606-3
Type :
conf
DOI :
10.1109/CGIV.2006.73
Filename :
1663792
Link To Document :
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