21 search results - page 2 / 5 » Image quality monitoring using spread spectrum watermarking |
ICMCS
2006
IEEE
13 years 11 months ago
2006
IEEE
In the integrity checking context of multimedia contents, a malicious user aims at devising a forged content in order to fool a watermarker by making him use as a genuine content....
ICIP
2005
IEEE
14 years 7 months ago
2005
IEEE
This paper presents novel techniques for detecting watermarks in images in a known-cover attack framework using natural scene models. Specifically, we consider a class of watermar...
ICMCS
2006
IEEE
13 years 11 months ago
2006
IEEE
In order to improve the robustness and imperceptibleness of the image spread spectrum watermark algorithm, a new approach for optimization in 8×8 DCT domain using genetic algorit...
IH
2001
Springer
13 years 9 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...
ICIP
2002
IEEE
14 years 6 months ago
2002
IEEE
The theoretical foundations of data hiding have been revealed by formulating the problem as message communication over a noisy channel, i.e. the host document. In light of this de...