Title :
Multi-video compression in texture space using 4D SPIHT
Author :
Ziegler, Gernot ; Lensch, Hendrik P A ; Magnor, Marcus ; Seidel, Hans-Peter
Author_Institution :
MPI Informatik, Saarbrucken, Germany
fDate :
29 Sept.-1 Oct. 2004
Abstract :
We present a model-based approach to encode multiple synchronized video streams which show a dynamic scene from different viewpoints. By utilizing 3D scene geometry, we compensate for motion and disparity by transforming all video images to object textures prior to compression. A 4D SPIHT wavelet compression algorithm exploits interframe coherence in both temporal and spatial dimension. Unused texels increase the compression, and a shape mask can be omitted at the cost of higher decoder complexity. The proposed coding scheme is intended for use in conjunction with free-viewpoint video and 3D-TV applications.
Keywords :
computational complexity; data compression; image texture; motion compensation; video coding; wavelet transforms; 3D scene geometry; 4D SPIHT; decoder complexity; free-viewpoint video; interframe coherence; model-based approach; multivideo compression; texture space; video coding; video image; wavelet compression algorithm; Coherence; Compression algorithms; Costs; Decoding; Geometry; Image coding; Layout; Shape; Streaming media; Video compression;
Conference_Titel :
Multimedia Signal Processing, 2004 IEEE 6th Workshop on
Print_ISBN :
0-7803-8578-0
DOI :
10.1109/MMSP.2004.1436410
