Invisible image watermark for image verification

Details Invisible image watermark for image verification Invisible image watermark for image verification

1997-01-08

1999-02-23

Gregory, Bernarr E.

Cryptography

By modifying optical image

380 3, 380 4, 380 23, 380 55, 283 17, 283 73, 283113, G09C 500

Patent

active

058752498

ABSTRACT:
A system quickly verifies that the content of an image has not been changed since an earlier time when the content of that image was stamped. The system consists of a stamping process that embeds stamping information into a source image and produces a verification key, and a verification process that extracts stamping information from a stamped source image based on the verification key. Furthermore, the verification process produces an image itself, from which the verification can be readily judged visually or by use of a computer or other display device. In the verification process, the changes in an image can be detected and localized. The image stamping process further includes an error diffussion process so that the effects of combining the stamping information with the original image are not readily perceptable. An image is safeguarded against malicious manipulations and the proprietary rights are protected by maintaining the integrity of the image content.

REFERENCES:
patent: 5488664 (1996-01-01), Shamir
patent: 5530759 (1996-06-01), Braudaway et al.
patent: 5664018 (1997-09-01), Leighton
patent: 5734752 (1998-03-01), Knox
patent: 5745569 (1998-04-01), Moskowitz et al.
patent: 5748783 (1998-05-01), Rhoads
van Schyndel, R. G. et al., "A Digital Watermark", IEEE, vol. II of III, pp. 86-90, 1994.
Walton, Steve, "Image Authentication for a Slippery New Age", Dr. Dobb's Journal, pp. 18-20, 22, 24, 26, 82, 84-87, vol. 20, Issue 4, Apr. 1995.
Friedman, Gary L., "The Trustworthy Digital Camera: Restoring Credibility to the Photographic Image", IEEE, pp. 905-910, 1993.
Bender, W. et al., "Techniques for data hiding", IBM Systems Journal, vol. 35, Nos. 3&4, pp. 313-336, 1996.

Affiliated with

Also associated with

Rating

Invisible image watermark for image verification does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Invisible image watermark for image verification, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Invisible image watermark for image verification will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-313567