Patent ID: 7400747
Filing Date: 2008-07-15
Classification: G06T,Y10S

Abstract:
1. A method of representing motion of an object appearing in a sequence of images comprising: deriving for each image a set of representative points representing the location of the object, said representative points forming a polygon defining a representative area associated therewith; deriving a trajectory approximate function representing the trajectory of a representative point from said set of representative points, in two or more of said sequence of images, where a trajectory approximate function is derived for each of said representative points in said set of representative points, the trajectory approximate function providing a modification of the location of the respective representative point, thus providing a modified representative area; and calculating an error value for said trajectory approximate function for each of the representative points for an image, wherein the error value is calculated on the difference in area of the object as represented by the representative point and the area of the object with the representative point replaced by the respective approximate function value.