Data embedding employing degenerate clusters of data having differences less than noise value
Patent
·
OSTI ID:675869
A method of embedding auxiliary information into a set of host data, such as a photograph, television signal, facsimile transmission, or identification card. All such host data contain intrinsic noise, allowing pixels in the host data which are nearly identical and which have values differing by less than the noise value to be manipulated and replaced with auxiliary data. As the embedding method does not change the elemental values of the host data, the auxiliary data do not noticeably affect the appearance or interpretation of the host data. By a substantially reverse process, the embedded auxiliary data can be retrieved easily by an authorized user. 35 figs.
- Research Organization:
- Univ. of California (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- Assignee:
- Univ. of California, Los Almos, NM (United States)
- Patent Number(s):
- US 5,819,289/A/
- Application Number:
- PAN: 8-855,243
- OSTI ID:
- 675869
- Resource Relation:
- Other Information: PBD: 6 Oct 1998
- Country of Publication:
- United States
- Language:
- English
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