| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an image processor for decoding data at a high speed even when a plurality of conditions are provided for extracting optional data embedded in an image. Ž<P>SOLUTION: The image processor 100 has a condition-estimating means 101 estimating a decoding condition from image data; a region-division means 102 dividing a predetermined region related to the image data; an additional information extracting means 103 extracting additional information from a relationship in a feature quantity between divided blocks; and an additional information output means 104 outputting the extracted additional information. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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