VERFAHREN UND VORRICHTUNG ZUM SCHRAFFIEREN INNERHALB EINES PROFILS, MIT EINFACHER SCHRAFFURDATENVERARBEITUNG

摘要

A method and an apparatus for processing digital image data representing parallel inclined hatching lines within a desired boundary. Initially, a 2-dimensional coordinate system having two axes X', Y', one (X') of which is parallel to the inclined lines is established. Coordinate values in the 2-dimensional coordinate system of each intersection between each of the straight lines and the boundary are calculated, and the hatching data is prepared so as to connect the calculated intersections for each straight line, to thereby hatch the corresponding one of the parallel inclined lines. <IMAGE>