Title :
Rate optimization by true motion estimation
Author :
Chen, Yen-Kuang ; Kung, S.Y.
Author_Institution :
Princeton Univ., NJ, USA
Abstract :
We propose a rate-optimized motion estimation based on a “true” motion tracker. We observe that the piecewise continuous motion field reduces the bit rate for differentially encoded motion vectors. Hence, a neighborhood relaxation method is proposed. In addition, in current MPEG-4 video VM, each video-object-plane (VOP) is individually coded by a block-based approach. The bit rate can be further improved by the removal of redundancy among the block motion vectors within the same VOP. Therefore, we also propose an object-and-block hybrid coding
Keywords :
code standards; data compression; motion estimation; optimisation; redundancy; telecommunication standards; vectors; video coding; MPEG-4 video VM; bit rate; block-based approach; differentially encoded motion vectors; motion tracker; neighborhood relaxation method; object-and-block hybrid coding; piecewise continuous motion field; rate optimization; redundancy; true motion estimation; video coding; video compression; video-object-plane; Bit rate; Computational efficiency; Costs; Design for disassembly; MPEG 4 Standard; Motion estimation; Relaxation methods; Tracking; Video compression; Virtual manufacturing;
Conference_Titel :
Multimedia Signal Processing, 1997., IEEE First Workshop on
Conference_Location :
Princeton, NJ
Print_ISBN :
0-7803-3780-8
DOI :
10.1109/MMSP.1997.602634
