| 摘要 |
PROBLEM TO BE SOLVED: To increase the speed of the processing which retrieves a specific pattern from a picture in the picture recognition processing. SOLUTION: At the time of retrieving a specific pattern from a picture 20, a picture processor generates a map picture 22, whose pixels correspond to block area of the picture 20 in 1:1, and it labels individual pixels of this map picture 22 on the basis of feature quantities of block areas of the picture 20. Thereafter, the picture processor detects a prescribed pattern for specification of an area on the map 22 and specifies the block area on the original picture 20, which corresponds to the position on the map picture 22 where this prescribed pattern is detected, as area where the specific pattern exists. Retrieval processing of the specific pattern is performed in this area.
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