Patent ID: 7139019

Claim:
An image processing device for processing image data made up of a predetermined number of pieces of pixel data obtained by an image-taking device having a predetermined number of pixels having time-integration effects, said image processing device comprising: weighted difference image data calculating means for calculating a weighted difference between each pixel in a frame of interest in said image data and each pixel in an adjacent frame which is adjacent to said frame of interest in said image data, based on weighting which is to correspond to a mixture ratio indicating a mixed state in said pixel data of objects which are multiple in the real world, and outputting as weighted difference image data corresponding to said frame of interest; inter-weighted-difference-image correlation data computing means for matching a relative position of said weighted difference image data of said frame of interest and said weighted difference image data of said adjacent frame according to a movement vector which is to indicate relative movement between said pixel data of said frame of interest and said pixel data of said adjacent frame, computing the correlation between a block of interest containing each pixel of interest of said weighted difference image data of said frame of interest and a corresponding block of said weighted difference image data of said adjacent frame, and outputting as inter-weighted-difference-image correlation data; and detecting means for, with regard to each predetermined increment of said inter-weighted-difference-image correlation data, detecting at least one of said weighting and said movement vector where the correlation between said weighted difference image data is maximum, setting said weighting to said mixture ratio corresponding to said increment of said frame of interest in the event that said weighting is detected, and setting said movement vector to said movement vector corresponding to said increment of said frame of interest in the event that said movement vector is detected.