33 search results - page 5 / 7 » Correlation Detection of Asymmetric Watermark |
MMSEC
2006
ACM
14 years 27 days ago
2006
ACM
Current zero-knowledge watermark detectors are based on a linear correlation between the asset features and a given secret sequence. This detection function is susceptible of bein...
IH
2001
Springer
13 years 11 months ago
2001
Springer
We present a set of watermarking techniques for effective covert communication over an audio signal carrier. Watermark robustness is enabled using: (i) redundant spread-spectrum fo...
IH
2004
Springer
14 years 9 days ago
2004
Springer
A digitally altered photograph, often leaving no visual clues of having been tampered with, can be indistinguishable from an authentic photograph. As a result, photographs no longe...
ICIP
2000
IEEE
14 years 8 months ago
2000
IEEE
Among the many techniques available for informationconcealment, those based on spread spectrummodulationshave proven to yield improved results when robustness against attack is at...
ICIP
2005
IEEE
14 years 8 months ago
2005
IEEE
Dirty paper trellis codes are a form of watermarking with side information. These codes have the advantage of being invariant to valumetric scaling of the cover Work. However, the...