Apparatus and method for image group integrity protection
US7120273B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2002 |
| Grant date | Oct 10, 2006 |
| Priority date | — |
| Expiry date | Feb 28, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/3247
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method for protecting the integrity of a group of images is provided. One embodiment for protecting the integrity of a group of images comprises watermarking each one of a plurality of images in an image group with a unique watermark having at least an image digest, the image digest comprising information that identifies the watermarked image as an original image, and the plurality of images having a predefined order in the image group; and including in selected ones of the unique watermarks a unique decryption key, each one of the unique decryption keys configured for decrypting the unique watermark of a next image in the image group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.