A method of vertex-based hierarchical shape representation and coding includes selecting an image of interest, defining a boundary about an object of interest within the image of interest, wherein the boundary is defined by a set of contour points, selecting a number of layers, each layer...http://www.google.fr/patents/US5838830?utm_source=gb-gplus-shareBrevet US5838830 - Vertex-based hierarchical shape representation and coding method and apparatus
Vertex-based hierarchical shape representation and coding method and ...