| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an image processing system capable of calibrating a color tone shift of two pieces of printed matter without using a color chart. <P>SOLUTION: The image processing device comprises: geometric transformation parameter estimation means 42 which obtains a geometric transformation parameter for aligning positions of a first output image data set and a second output image data set; difference detection means 61 which generates a difference image data set by calculating differences of pixel values of pixels or pixel groups of a first output image data set and a second output image data set which can be related by a geometric transformation parameter; correction processing means 62 which generates a corrected image data set transformed from pixel values of the difference image data set by referring to a transformation table which relates pixel values of the difference image data set and pixel values after transformation; and image synthesizing means 63 which synthesizes a document image data set and the corrected image data set by performing an arithmetic processing of corresponding pixel values of pixels of the document image data set and the corrected image data set. <P>COPYRIGHT: (C)2013,JPO&INPIT |
