IMAGE MOTION DETECTING METHOD

摘要

PURPOSE: To provide an image motion detecting method which reduces the calculation cost for the extraction and tracking of feature points by making a nearby search using a relative evaluation function and an image motion detecting method which is hardly affected by a noise by using a polynomial function for finding the smallest representative error. CONSTITUTION: A correlation value showing the similarity of an luminance distribution between the inside of a partial area in an image and its nearby area is found and approximated as a polynomial function to calculate the steepness, thereby extracting and tracking feature points. Further, an optional number of feature points corresponding points are selected out of plural feature points corresponding points in images before and after a moving image a polynomial function for finding a polynomial coefficient is assumed, and an error from prediction is evaluated to find a representative error; and the polynomial function for finding the smallest representative function is found and this polynomial function is used to detect the motion of the image.