Method and system for adaptive motion estimation

Details Method and system for adaptive motion estimation Method and system for adaptive motion estimation

2005-08-18

2010-10-05

Wong, Allen (Department: 2621)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240000, C375S240010, C375S240120

Reexamination Certificate

active

07809063

ABSTRACT:
A method and system for adaptive motion estimation, which sets a search range in a previous frame in order to find a corresponding macroblock in the adaptive search range according to each macroblock of a current frame and to accordingly determine a corresponding motion vector. A motion vector is first determined by referring to a target macroblock of a current frame and reference macroblocks in a search range of a previous frame. Then, a compression mode is determined according to the target macroblock, the reference macroblocks and the motion vector, and a mode data is outputted corresponding to the compression mode. Finally, a search range is determined according to the mode data and the motion vector. Thus, the required computational amount and bandwidth can be saved and also the high-efficiency image compression is obtained.

REFERENCES:
patent: 5661524 (1997-08-01), Murdock et al.
patent: 2002/0196854 (2002-12-01), Kim
patent: 2004/0190615 (2004-09-01), Abe et al.

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