27 search results - page 2 / 6 » Localization and security enhancement of block-based image a... |
TIP
2002
13 years 4 months ago
2002
Several fragile watermarking schemes presented in the literature are either vulnerable to vector quantization (VQ) counterfeiting attacks or sacrifice localization accuracy to impr...
ICIAR
2004
Springer
13 years 10 months ago
2004
Springer
In this paper, a new block-based image-dependent watermarking technique is proposed. The proposed technique utilizes the correlation coefficient statistic to produce a short and un...
ICIP
2006
IEEE
14 years 6 months ago
2006
IEEE
Abstract-- This paper presents an authentication watermarking method which can localize the tampering regions in fine granularity. Unlike the previous block-wise Tampering-Localiza...
ICIP
2003
IEEE
14 years 6 months ago
2003
IEEE
This paper studies joint security and robustness enhancement of quantization based data embedding for multimedia authentication applications. We present analysis showing that thro...
MMSEC
2006
ACM
13 years 10 months ago
2006
ACM
We present an efficient JPEG2000-based image authentication scheme, which is robust to JPEG compression and other allowed signal processing operations. Positive wavelet-based wate...