Method and related apparatus for motion estimation

Details Method and related apparatus for motion estimation Method and related apparatus for motion estimation

2006-12-05

2006-12-05

Huber, Paul (Department: 2627)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

Reexamination Certificate

active

07145951

ABSTRACT:
A method and related apparatus for motion estimation in a video compression system uses a cost function different from that of the prior art to determine an optimal motion vector for a current encoding block. The cost function takes into account, not only the conventional sum of absolute differences, but also the quantization step and the variation of pixel differences between the current encoding block and a block in a search range in a target picture. Using the disclosed cost function, the result residual corresponding to the optimal motion vector can be better compressed than that of other candidate motion vectors.

REFERENCES:
patent: 5847776 (1998-12-01), Khmelnitsky et al.
patent: 6014181 (2000-01-01), Sun
patent: 6418166 (2002-07-01), Wu et al.
patent: 7072399 (2006-07-01), Winger et al.

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