8 search results - page 2 / 2 » Security of DM Quantization Watermarking Schemes: A Practica... |
ICIP
2005
IEEE
14 years 7 months ago
2005
IEEE
Most block-based image authentication techniques that are presented in the literature sacrifice localization accuracy in order to resist vector quantization (VQ) counterfeiting att...
IWDW
2004
Springer
13 years 10 months ago
2004
Springer
Most of watermarking techniques are based on Wide Spread Spectrum (WSS). Security of such schemes is studied here in adopting a cryptanalysis point of view. The security is proport...
ICIP
2004
IEEE
14 years 6 months ago
2004
IEEE
In this paper we suggest viewing images (as well as attacks on them) as a sequence of linear operators and propose novel hashing algorithms employing transforms that are based on ...