METHOD AND DEVICE FOR DETECTING MOTION VECTOR

摘要

PROBLEM TO BE SOLVED: To suppress an increase of a circuit scale when a motion vector which is to be used in motion compensation prediction encoding is detected.

SOLUTION: A 1-pixel precision motion vector detection part 110 obtains one pixel precision motion vector and the evaluation value of the vector from a picture of a block being an object of encoding and a picture of a candidate block within a retrieval range so that an evaluation value being a correlation of both pictures becomes minimum. A 0.5-pixel precision motion vector decision part 120 decides a 0.5 pixel precision motion vector on the basis of: the minimum evaluation value of the one pixel precision motion vector which is obtained by the 1 pixel precision motion vector detection part 110; and the evaluation value of an adjacent one pixel precision candidate vector.

COPYRIGHT: (C)2005,JPO&NCIPI