On the basis of vertex coordinates of polygons to be recorded, mode data is provided for every segment forming the polygons. The mode data includes mode data as to whether points on the segment are in a raster start point mode, a raster end point mode or a raster start and end point mode. The mode data...http://www.google.fr/patents/US4853971?utm_source=gb-gplus-shareBrevet US4853971 - Method and apparatus for processing image data
