| 摘要 |
PROBLEM TO BE SOLVED: To actualize an image retrieval system which can efficiently find a target document image in a short time without any omission of retrieval. SOLUTION: A character recognition result is registered as retrieval data of the document image in a database and at the time of this registration, a proper registration system based upon reliability is decided in a registering method deciding processing (step S13). The character recognition results of respective document images are classified and registered in three databases 201, 202, and 203, i.e., A, B, and C according to the reliability. At the time of retrieval, a retrieving processing (step S114) corresponding to the databases 201, 202, and 203 as retrieval destinations is performed. A document image that a user selects on a retrieval result screen is read out of a document image file storage part 200 and displayed on the screen.
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