| 摘要 |
PURPOSE:To speed up matching and to reduce the generation of malfunction by finding a temporary pattern center having high pattern probability and moving a matching pattern successively from the center to the periphery of the input pattern to match the pattern. CONSTITUTION:The input pattern 2 of an object 1 to be recognized is read out by a TV camera 3, binary-coded by a binary-coding circuit 4 and successively stored in an input pattern memory 5 synchronusly with the scanning of the camera 3. The temporary center positions of X and Y components of a matching pattern are set up in temporary center registers 6, 7 and the temporary centers of respective components are applied to adders 11, 14. In addition, the outputs of matching scanning counters 10, 13 for the X and Y components respectively and the X and Y component outputs 8, 12 of an offset memory 9 are applied to the circuit 11, 14 and the pattern 2 in the memory 5 is read out in a consistent degree counting circuit 17 by using the outputs of the circuits 11, 14 as the addresses. Subsequetly, the mask pattern read out from a mask pattern memory 16 is successively moved to the periphery of the pattern 2 by a circuit 17 to match the pattern. |
