| 摘要 |
PROBLEM TO BE SOLVED: To specify right information in an image by extracting the image of a prescribed area of an original image, converting the extracted image into invisible electronic watermark information and writing this information into another image where the visible electronic watermark information is written. SOLUTION: An image 7 in a prescribed area 5 of an original image 3-1 and position information on the image 7 are extracted (201). The image 7 is converted into invisible electronic watermark information 9 (202). Then an image 11 of right information etc., is overwritten in an area 5 of an image 3-2 as a visible electronic watermark (203) to generate an image 3-3. The right information is written in an area 5 of the image 3-3 together with information 9 embedded into the area 5 to obtain a prescribed image (204). Thus, its possible to insert and specify the right information in an image and also exclude the right information to keep the design property of the image. |
