Title :
A new technique for block-based motion compensation
Author :
Kozu, Shinichi ; Kulkarni, Sanjeev
Author_Institution :
Semiconductor Appl. Eng. Div., NEC Corp., Kawasaki, Japan
Abstract :
We present a new algorithm to find motion vectors of B frames (bidirectional frames) in the MPEG encoding scheme which significantly reduces the computations required compared with the conventional method. We interpolate the motion vectors for each macro block in the B frame using the motion vector of the next P frame (predictive frame) and do a small search to final a better matching. The number of computations is reduced by factor of 5~20, but the matching stays comparable with that of exhaustive search
Keywords :
image coding; image matching; image sequences; interpolation; motion estimation; MPEG; bidirectional frames; block-based motion compensation; encoding; image matching; motion vector interpolation; predictive frame; Decoding; Encoding; Image sequences; Interpolation; Motion compensation; Motion estimation; Motion measurement; National electric code; Tracking;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1994. ICASSP-94., 1994 IEEE International Conference on
Conference_Location :
Adelaide, SA
Print_ISBN :
0-7803-1775-0
DOI :
10.1109/ICASSP.1994.389493
