TRACKING AND PROCESSING METHOD FOR CONTOUR POINT

摘要

PURPOSE:To reduce sharply the reading volume of eight adjacent picture elements by constituting the contour point tracking processing of objective point moving direction deciding processing and outline point tracking order determining processing. CONSTITUTION:The contour point tracking processing 1 is constituted of the objective point moving direction deciding processing 2 and the contour point tracking order determining processing 3. The contour points having the relation of 8 connections are sequentially tracked in the area of '0' or '1' of digital values in a pattern memory for storing data by the processing 1. At that time, a retrieving direction is clockwise or counterclockwise determined based on the moving direction from the contour point just before an objective point to the objective point.