METHOD OF ESTIMATING MOTION VECTOR FOR DETERMINING SEARCH ORDER BY DISTANCE-WEIGHTING MEANS

Japanese Patent JP2006254454

A

To provide a motion vector estimation method for determining a search order by a distance weighting means for improving the prediction efficiency.

In the motion vector estimation method, a predetermined block contained on a first screen is referred to, a matching block with the predetermined block is searched on a second screen close to the first one timewise, and the search order is determined by the distance weighting means for estimating the motion vector of the predetermined block. Also, in the motion vector estimation method, a search base point is selected on the second screen, the matching block with the predetermined block is searched, at far positions from the search base point sequentially by the distance-weighting means, and the sequence for search is determined by the distance-weighting means for estimating the motion vector of the predetermined block. Since the motion vector is often distributed radially, thus reducing wasteful search time by the method for determining the search order by the distance weighting means.

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TSAI CHANG-CHE
LIN CHIH-HSIN
LEE YI-FANG
CHAO TZU-YI

JP2006063453A

September 21, 2006

March 09, 2006

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PIXART IMAGING INC

H04N19/50; G06T7/20; H04N19/105; H04N19/139; H04N19/167; H04N19/196; H04N19/20; H04N19/56; H04N19/625; H04N19/91

JPH01179584A	1989-07-17
JP2000236552A	2000-08-29
JP2002532026A	2002-09-24
JPH06189291A	1994-07-08

Takao Kawasaki

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