MOTION VECTOR DETECTING METHOD AND DEVICE

摘要

PROBLEM TO BE SOLVED: To remarkable reduce a circuit scale by detecting a motion vector between third and second frames at a first hierarchical level based on each first featured value and second feature value of each pixel corresponding to the first featured value between a first frame and a third frame. SOLUTION: The motion vector detector 21 of an encoder successively block- matches while searching the inside of a third searching area on a second reference hierarchical picture by a second basic hierarchical picture at the time of a first motion vector detection processing mode to detect the motion vector of a first stage between fields between adjacent frames at a lowest layer. Next, the detector 21 detects the motion vectors of the second and third stages. In this case, the detector 21 can remarkably reduce the detecting precision of the motion vector of the first stage. Consequently, this motion vector detector 21 one reduce the arithmetic quantity of a predictive error.