| 摘要 |
PURPOSE:To attain a high recognition factor by dividing a pattern into partial patterns to secure matching between forms and positions of those partial patterns and therefore recognizing an incomplete pattern causes by the overlap or breakage of parts. CONSTITUTION:The pictures of parts on a rotary parts feeder 1 are supplied through a TV camera 3 and sent to a picture processor 4. The processor 4 approximates the pattern contour of the input picture by a polygon and displays the countour in the form of an apex train. This apex train is divided into feature points on the contour and collated with a dictionary pattern to recognize a pattern. In this case, it is checked whether the same form is obtained with all combinations between the dictionary partial patterns and the recognizing subject patterns. Then a combination having no conflict with the position relation on the dictionary pattern is obtained from the partial patterns having the same form. Then the degree of similarity is decided whether or not said combination occupies a large area in the dictionary pattern.
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