-
公开(公告)号：DE69620279T2
公开(公告)日：2003-03-06
申请号：DE69620279
申请日：1996-01-11
Applicant: IBM
Inventor： BRAUDAWAY GORDON W , MAGERLEIN KAREN A , MINTZER FREDERICK C
Abstract: The method involves providing a digital original image, then providing a digital watermark image and, producing a watermarked image by superimposing the watermark image on the original image without changing the chromaticity parameters of pixels of the original image as watermarked. E.g. for each pixel in the watermark image that is not "transparent", it requires modifying the corresp pixel of the original image by changing the brightness but not the colour. A scanner (100) captures image data from a physical source (such as a painting or photograph) (102) and sends it to a digital computer (104). The latter includes a working storage (106) e.g. RAM an image storage system (108) (which can be, for example, a conventional hard disk drive. An image archive (110) can be, for example, a tape or disc storage.
-
公开(公告)号：DE69620279D1
公开(公告)日：2002-05-08
申请号：DE69620279
申请日：1996-01-11
Applicant: IBM
Inventor： BRAUDAWAY GORDON W , MAGERLEIN KAREN A , MINTZER FREDERICK C
Abstract: The method involves providing a digital original image, then providing a digital watermark image and, producing a watermarked image by superimposing the watermark image on the original image without changing the chromaticity parameters of pixels of the original image as watermarked. E.g. for each pixel in the watermark image that is not "transparent", it requires modifying the corresp pixel of the original image by changing the brightness but not the colour. A scanner (100) captures image data from a physical source (such as a painting or photograph) (102) and sends it to a digital computer (104). The latter includes a working storage (106) e.g. RAM an image storage system (108) (which can be, for example, a conventional hard disk drive. An image archive (110) can be, for example, a tape or disc storage.
-
Search Results
2
records
(took 0.016 seconds)
