63 search results - page 7 / 13 » A new spatial perceptual mask for image watermarking |
ICIP
2000
IEEE
14 years 9 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...
CVPR
1998
IEEE
14 years 9 months ago
1998
IEEE
We propose a new image retrieval method based on human perceptual clustering of color images. This color clustering produces for each image a small set of representative colors wh...
IEEEIAS
2009
IEEE
14 years 2 months ago
2009
IEEE
: This paper proposes a new watermarking method for detecting image tampering. First, an authentication number is created using a pair of watermark pixels as the coefficients of a ...
TOG
2008
13 years 7 months ago
2008
We present a new approach for enhancing local scene contrast by unsharp masking over arbitrary surfaces under any form of illumination. Our adaptation of a well-known 2D technique...
ICIP
2003
IEEE
14 years 21 days ago
2003
IEEE
A new reversible watermarking algorithm based on the difference expansion of colored images has been developed. Since the watermark is completely reversible, the original image ca...