Method and apparatus for hiding one image or pattern within another
US5905819A · kind A · utility
181Cited by
13References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 5, 1996 |
| Grant date | May 18, 1999 |
| Priority date | — |
| Expiry date | Feb 5, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/328
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of hiding a first image in a second image to produce a combined image includes the steps of: a) modifying the first image according to the content of the second image, so that when the modified first image is added to the second image to produce the combined image, no visible differences will exist between the second image and the combined image; and b) adding the modified first image to the second image to produce the combined image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.