| 摘要 |
Pattern data constituted by a plurality of elements is extracted from input image data. Template data constituted by a plurality of elements and weight data constituted by a plurality of elements and associated with the template data are read from a memory. A calculation is performed on each element using the pattern data, the template data, and the weight data to calculate a similarity value representing the degree of matching between the pattern data and the template data using the sum of calculation results obtained from the calculations on each element. The similarity value is compared with a predetermined threshold to obtain a determination output indicating whether there is a match between the pattern data and the template data or not.
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