Patent ID: 6931145
Filing Date: 2005-08-16
Classification: G06T

Abstract:
1. A method of measuring the surface motion of each portion of an object surface from a sequence of unit images of the object including first and second unit images, comprising the steps of: determining a plurality of measurement points in an image of said object of a first unit image, said plurality of measurement points having a hierarchical structure of a plurality of levels, with the higher level layer including measurement points larger in number of than the lower level layer; determining the points in said object image of said second unit image, corresponding to the measurement points of said first unit image of the lowest level of the hierarchical structure of said plurality of levels; and repeating, starting from a level immediately upper than the lowest level to the highest level, the determination of the points corresponding to the measurement points of the first unit image at each level in the image of said object of said second unit image, based on the points corresponding to said measurement points of said first unit image at an immediately lower level of each level in the image of said object of said second unit image.