A motion estimating method, for use in a motion estimation between a current and a previous frames of a binary video image, wherein the current frame is divided into a plurality of equal sized search blocks, forms a search region corresponding to each search block within the previous frame and a plurality...http://www.google.de/patents/US5969766?utm_source=gb-gplus-sharePatent US5969766 - Method and apparatus for contour motion estimating a binary image by using a weighted block match algorithm
