68 search results - page 2 / 14 » An Information-Theoretic Model for Image Watermarking and Da... |
ICASSP
2011
IEEE
12 years 9 months ago
2011
IEEE
A robust data hiding scheme that embeds the watermark bits by quantizing the gradient directions of an image is proposed. By embedding the watermark in the angle, the watermark be...
ICMCS
2000
IEEE
13 years 10 months ago
2000
IEEE
In this paper we address the question: Is water-filling appropriate for watermarking? The water-filling paradigm is a traditional solution to the capacity maximization of parall...
IH
1998
Springer
13 years 9 months ago
1998
Springer
An information-theoretic model for steganography with passive adversaries is proposed. The adversary's task of distinguishing between an innocent cover message C and a modi e...
TIP
2002
13 years 5 months ago
2002
Abstract-- We present a perceptual model for hiding a spreadspectrum watermark of variable amplitude and density in an image. The model takes into account the sensitivity and maski...
SPIESR
1998
13 years 6 months ago
1998
An approach to embedding gray scale images using a discrete wavelet transform is proposed. The proposed scheme enables using signature images that could be as much as 25% of the h...