Patent ID: 6125141
Filing Date: 2000-09-26
Classification: H04N

Abstract:
A motion vector detecting device for dividing an image luminance signal and image color-difference signals into blocks, each block having a fewer number of pixels than the number of pixels of one image, and determining an optimum motion vector for each of the luminance signal and the color-difference signals according to block matching, comprising:color-difference signal block generating means for re-arranging pixel values of an initial block for said color-difference signals, allowing for their superimposition, to generate a new color-difference signal block having the same number of pixels as the luminance signal block;evaluated value calculating means for comparing the new color-difference signal block generated by said color-difference signal block generating means and the luminance signal block with a block for a reference image signal to perform the block matching, thereby detecting motion vectors and evaluated values; andmotion vector selecting means for selecting an optimum evaluated value and an optimum motion vector corresponding to the optimum evaluated value from the evaluated values and motion vectors calculated by said evaluated value calculating means.