Pattern recognition system utilizing a plurality of partial standard patterns
First Claim
1. A pattern recognition system comprising:
- image pickup means for sequentially scanning an image of an object to produce first signals representative thereof;
first means, responsive to said first signals, for generating second signals representative of partial image patterns of a two-dimensional pattern of said object as sequentially scanned by said image pickup means;
second means for forming a plurality of two dimensional substandard patterns, each of which approximately corresponds to selected portion of the two-dimensional pattern of said object;
third means, responsive to the scan of said object by said image pickup means, for generating third signals representive of the respective sequential positions of said partial image patterns;
fourth means, coupled to said first means and said second means, for comparing said each partial image pattern with said respective substandard patterns, and for extracting said each partial image pattern which is within a predetermined degree of coincidence with said substandard pattern;
fifth means, coupled to said third means, for storing positions representative of said respective partial image patterns in response to the outputs of said fourth means; and
sixth means, coupled to said fifth means, for grouping said respective partial image patterns to groups of said partial image patterns, in each of which the distances between the positions representative of said partial image patterns are within a predetermined distance from each other in a two-dimensional coordinate system, and for calculating the coordinate of specific positions of said object in the two-dimensional coordinate system from the groups of said partial image patterns.
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Abstract
A pattern recognition system comprises a picture tube for picking up an object to be recognized, a partial image pattern cutting out apparatus which, in turn, outputs a plurality of partial image patterns cut out from an image pattern obtained from the picture tube, the partial image patterns being output in synchronization with the scanning of the picture tube and a memory storing a plurality of partial standard patterns. Each of the partial image patterns is compared with the respective partial standard patterns and the respective partial image patterns similar to each partial standard pattern are grouped every partial standard pattern. A group of the partial image patterns, each of which is closely spaced from each other in a position of two-dimensional coordinate is selected from each group of the grouped partial image patterns and the respective representative positions of the respective elected groups of the partial image patterns are calculated. The shape and the position of the object to be recognized can be detected from the fact that the respective representative positions are closely spaced from each other in a position of a two-dimensional coordinate.
164 Citations
9 Claims
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1. A pattern recognition system comprising:
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image pickup means for sequentially scanning an image of an object to produce first signals representative thereof; first means, responsive to said first signals, for generating second signals representative of partial image patterns of a two-dimensional pattern of said object as sequentially scanned by said image pickup means; second means for forming a plurality of two dimensional substandard patterns, each of which approximately corresponds to selected portion of the two-dimensional pattern of said object; third means, responsive to the scan of said object by said image pickup means, for generating third signals representive of the respective sequential positions of said partial image patterns; fourth means, coupled to said first means and said second means, for comparing said each partial image pattern with said respective substandard patterns, and for extracting said each partial image pattern which is within a predetermined degree of coincidence with said substandard pattern; fifth means, coupled to said third means, for storing positions representative of said respective partial image patterns in response to the outputs of said fourth means; and sixth means, coupled to said fifth means, for grouping said respective partial image patterns to groups of said partial image patterns, in each of which the distances between the positions representative of said partial image patterns are within a predetermined distance from each other in a two-dimensional coordinate system, and for calculating the coordinate of specific positions of said object in the two-dimensional coordinate system from the groups of said partial image patterns. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification