474 search results - page 63 / 95 » Region-Based Watermarking for Images |
ICIAR
2004
Springer
14 years 3 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...
TIP
2002
13 years 9 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...
ICC
2007
IEEE
14 years 4 months ago
2007
IEEE
This paper investigates the operations of the wavelet tree based quantization and proposes a constrained wavelet tree quantization for image watermarking. The wavelet coefficients ...
ISCAS
2003
IEEE
14 years 3 months ago
2003
IEEE
Many watermarking algorithms embed the watermark into the image as contiguous non-overlapping tiles. This tiling structure forms an implicit synchronization template that can be r...
ICIP
2003
IEEE
14 years 11 months ago
2003
IEEE
We propose an image hashing algorithm that is based on distributed compression principles. The algorithm assumes the availability of a robust feature vector extracted from the ima...