HOLE MARK READER FOR PRINTED WIRING PATTERN

摘要

PURPOSE:To automatically read a hole mark by obtaining the tip position and the tail position of the hole from a picture signal to detect an area in which the hole is present and operating the central coordinate and the diameter of the hole in the area. CONSTITUTION:A sheet 1 on which an object graphic is formed is mounted on a moving table 2 and illuminated by a light source part 5. The object graphic on the sheet 1 is picked up in image in an image pickup part 4 and an output thereof is applied to a processor 6. The processor 6 obtains the tip position and the tail position of the hole from the picture signal from the image pickup part 4 to detect the area in which the hole is present and operates the central coordinate and the diameter of the hole in the area.