A method of compressing the data amount of position information of logical diagrams by the arrangement process in the fair—copy reproducing system
Michihiko Minoh, Makoto Araki, Toshiyuki Sakai · Systems and Computers in Japan · 1988
Abstract This paper presents a system FACORES, which recognizes, interprets and makes a fair copy of handwritten logical diagrams. In particular, the arrangement process and the compression of position information are discussed. The logical diagram is composed of graphical symbols, connecting lines and character strings, and describes the connecting relations among those elements. Consequently, the positions of those elements in the diagram are not very important. In the case of a handwritten diagram, it is difficult to write the elements arranged in positions. The authors propose a simple arrangement of the elements in the input diagram as a fair‐copy reproduction of the handwritten diagram. In the arrangement process, the intersection, corner and end points of lines are regarded as symbols, in the same way as the graphical symbols. The class ID and the priority in the arrangement are determined based on the connecting relations. Based on such information, the arrangement is made by successively placing the symbols. It was verified by experiment that the result of fair copy reproduction is satisfactory and the data concerning the position can be compressed approximately to half.