Finnegan, Henderson, Farabow, Garrett & Dunner LLP
Methods and apparatus for reduction of prediction modes in motion estimation
In image encoding methods or systems, first and second motion vectors are determined for the two fields comprising a frame based on a field search. The first and second motion vectors then may be used to determine whether a frame prediction search is necessary. If the difference between motion vectors for the two fields of the frame is less than a threshold, the frame search should be performed. A suitable threshold may be calculated or described in any number of ways, however, in one embodiment of the present invention, the threshold is dynamic that changes in response to the changing information in either preceding or succeeding fields.
Sony Electronics, Inc. Sony Corporation
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Naofumi Ching-Fang
Yanagihara Chang