| 摘要 |
PURPOSE:To shorten a processing time by calculating a distance between strokes once, storing a combination in which the distance between the strokes is decided to be a minimum, and saving the calculation of the distance between the strokes on this combination when the same combination is produced again. CONSTITUTION:A combination storing means 12 stores the combination of feature points in which the distance between the strokes is calculated once and the distance between the strokes is decided to be a minimum at every stroke, and a duplication preventing means 11 compares the combination stored in a combination storing means 12 with the combination processed in combination decision means 5, 6, and if they are the same, the processing on the combination is stopped. Accordingly, the once decided combination is not repeatedly processed, so that the processing time can be remarkably shortened.
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