Motion vector estimation system

Details Motion vector estimation system Motion vector estimation system

G - Physics

06

T

G06T 7/20 (2006.01) H04N 5/14 (2006.01) H04N 7/26 (2006.01)

Patent

CA 2231703

A method and system for motion vector estimation are disclosed, which are used for encoding a moving picture, even in the case where a limited search window is used. In such a system, a reference picture storing section (101) stores reference picture data and a current picture storing section (102) stores a current picture data. A motion vector estimating section (103) takes matching between the current picture data and the reference picture data to estimate a motion vector having the minimum difference. A motion vector statistics processing section (104) calculates an average value and a histogram from each picture of an estimated motion vector. A shift vector setting section (105) calculates a shift vector of a motion vector search window based on the average value and histogram in each of coded pictures. A search window designating section (106) designates a motion vector to be searched according to the calculated shift vector so as to cause the motion vector estimating section (103) to estimate the motion vector.

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