Patent ID: 7260148
Filing Date: 2007-08-21
Classification: G06T,H04N

Abstract:
1. A method for estimating a motion vector for encoding video, comprising: selecting a prediction motion vector for a current block of a current image frame from motion vectors of a plurality of neighbor blocks of said current block having a minimum block distortion measure between the neighbor block displaced by the corresponding motion vector and corresponding pixels of a prior image frame; and checking whether a predetermined criterion is satisfied, where: PMV is the selected prediction motion vector; BDM current (PMV) is the block distortion measure of said current block with a block in said previous image frame displaced by said selected prediction motion vector; MBDM neighbor (PMV) is said minimum block distortion measure of said neighbor block with a block in said previous image frame displaced by said corresponding motion vector; and Threshold is a predetermined constant; if said predetermined criterion is satisfied, then assigning said selected prediction motion vector as estimated motion vector to said current block; and if said predetermined criterion is not satisfied, then