The analysis unit 11 of the accounting processing system 1 comprisesThe area of the shadow is identified from the image data of the proof.A region identifying section 21 which overlaps with the area of the shading and identifies an area corresponding to a journal element such as a publisher area including the publisher element, andThe entry element extracting unit 22 for extracting a journal element containing the publisher element from the publisher area identified by the region identification unit 21 andA transaction destination database 23 Where the destination information is stored andThe publisher element extracted by the entry element extraction sectionThe publisher estimating unit 24 which collects the transaction destination information stored in the destination database 23 and estimates the source of the authenticity, and.
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