| 摘要 |
PROBLEM TO BE SOLVED: To provide an image processing method and an image processing apparatus which can perform accurate matching even for a photograph-containing document, and to provide an image reading apparatus, image forming apparatus, computer program and computer readable recording medium. SOLUTION: On the basis of an area detection signal, a layer separation section 251 outputs a document image in a text area to a feature point calculating section 252, and generates four layers from a document image in a photograph area to output the generated layers to the feature point calculating section 252. The feature point calculating section 252 sums feature points extracted for each area. A features calculating section 253 calculates a hash value based on the feature points. A vote processing section 254 searches a hash table based on the hash value, and votes for a registered image associated with the hash value. On the basis of the voting result, a similarity determination processing section 255 determines whether the document image is similar to any registered image, and then outputs the determination result. COPYRIGHT: (C)2009,JPO&INPIT
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