Sciweavers

ICIP
2001
IEEE
15 years 2 months ago
A hierarchical image authentication watermark with improved localization and security
Several fragile watermarking schemes presented in the literature are either vulnerable to vector quantization (VQ) counterfeiting attacks or sacrifice localization accuracy to imp...
Mehmet Utku Celik, Gaurav Sharma, Eli Saber, A. Mu...
ICIP
2005
IEEE
15 years 2 months ago
Localization and security enhancement of block-based image authentication
Most block-based image authentication techniques that are presented in the literature sacrifice localization accuracy in order to resist vector quantization (VQ) counterfeiting att...
Abdelkader H. Ouda, Mahmoud R. El-Sakka