Patent ID: 6516031
Filing Date: 2003-02-04
Classification: G06T,H04N

Abstract:
A motion vector detecting device for searching a predictive block included in a reference image, for which a predictive error is obtained by comparison with a template block included in a current image, and detecting a motion vector indicating a displacement between said template block and said predictive block, comprising:an operation unit for calculating estimation values between said template block and a displacement block after skipping some of the corresponding pixels between said template block and said displacement block, said estimation values being calculated every time said displacement block is moved in a search window, said displacement block having the same size as said template block and included in said search window, and said search window being defined in said reference image as a region including a block corresponding to said template block; a comparison unit for searching a minimum value among said estimation values on said template block and outputting said motion vector corresponding to a displacement block providing said minimum value, which is defined as said predictive block; and an input unit for supplying pixel values of said template block and pixel values of said search window to said operation unit, said input unit including a filter unit for performing filtering of said current image and said reference image independently of one another, said filtering including an arithmetic operation using a pixel value of an object pixel to be filtered and at least a pixel value of another pixel belonging to the same image as said object pixel.