MOVEMENT ESTIMATION DEVICE AND METHOD FOR IMAGE ENCODING SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a movement estimating device for image encoding system which increases the efficiency of image encoding by extending the motion estimation range of a P picture. SOLUTION: In the movement estimation device and method for image encoding system which increases the efficiency of image encoding by extending the movement estimation range of a P picture by using a reverse movement estimating device used for the movement estimation of a B picture when a picture type is a P picture, the picture type of an image to be transmitted is determined; when the picture type is a P picture, a forward movement estimation and backward motion estimation module divides an estimation area and carries out forward movement estimation. Then two obtained moving vectors (1st forward moving vector and 2nd forward movement vector) are compared and the moving vector having a smaller movement error is determined to reduce the movement error of the P picture, thereby increasing the encoding efficiency.