| 摘要 |
PROBLEM TO BE SOLVED: To provide an image processing apparatus and image processing method for suppressing the deterioration of image quality due to information embedding and capable of easily extracting information from paper. SOLUTION: The image processing apparatus of embedding determined information in an image has an inputting means for inputting the image, a dividing means for dividing the inputted image into a plurality of image regions, a periodicity generating means for generating a plurality of different periodicities, an adding means for adding a predetermined value to a pixel value of each pixel in the image region divided by the dividing means on the basis of the periodicity, and a selecting means for selecting the periodicity for the addition from among the plurality of periodicities, in accordance with the predetermined information. COPYRIGHT: (C)2003,JPO
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