Apparatus and methods for coding and storing raster scan images

摘要: In automatically checking circuit boards by raster scanning, it is useful to code and store conductor boundaries for later analysis. Coding time can be reduced storing an identification of a chain boundary segments in one two arrays each detected scan line, the being stored at address corresponding position segment detected. At same signals describing are another related identification. When next line detected, its used said array if found, new other as part identified. order reduce size not areas allocated chains but vacant location RAM stores links between segments.