| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a retouched image extracting device for preventing the occurrence of the unprocessed image after differential processing, and for improving the extracting precision of a retouched image. <P>SOLUTION: The displacement value of each area of the original image of an electronic document identified by a first area identifying means 101 and each area of a retouched superimposed image identified by a second area identifying means 103 are detected by an image position detecting means 105, and the positions are corrected, and differential processing is executed by an image differential processing means 106 based on the detected displacement values. Thus, even when any displacement is generated between the original image of the electronic document and the retouched superimposed image, the displacement is corrected, and then the differential processing is executed. Thus, it is possible to prevent the occurrence of the unprocessed image after the differential processing, and to improve the extracting precision of the retouched image. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
