Van Renesse, 2002 - Google Patents
Hidden and scrambled images: A reviewVan Renesse, 2002
View PDF- Document ID
- 12082961874519758547
- Author
- Van Renesse R
- Publication year
- Publication venue
- Optical Security and Counterfeit Deterrence Techniques IV
External Links
Snippet
This paper reviews screen-decoded images, images that are invisible or illegible to the naked eye but that are visualized or decoded by means of periodic phenomena, such as an absorptive grating, a lenticular screen or the sampling frequency of a copying system. Two …
- 230000000051 modifying 0 abstract description 78
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES2203060T3 (en) | PROCEDURE AND APPARATUS FOR PROTECTION AGAINST COUNTERFEITING, USING A DIGITAL PROCESSING. | |
| CA2534797C (en) | Authentication of documents and articles by moire patterns | |
| RU2176823C2 (en) | Program-implemented method and device for counterfeiting protection | |
| US20040001604A1 (en) | Authentication with built-in encryption by using moire intensity profiles between random layers | |
| CA2841146C (en) | Encoding hidden information in spatial line frequencies | |
| EP1238373A1 (en) | New methods and apparatus for authentication of documents by using the intensity profile of moire patterns | |
| Van Renesse | Hidden and scrambled images: A review | |
| US20120163714A1 (en) | Method for encoding and simultaneously decoding images having multiple color components | |
| JP5768236B2 (en) | Anti-counterfeit printed matter, anti-counterfeit printed material preparation apparatus, and anti-counterfeit printed matter preparation method | |
| JP5990791B2 (en) | Anti-counterfeit printed matter | |
| KR100562073B1 (en) | Anti-counterfeiting method and apparatus using digital screening |