356 search results - page 51 / 72 » Foveated image watermarking |
ICMCS
1999
IEEE
14 years 2 months ago
1999
IEEE
Many types of pseudo-random signals have been used to embed signatures as watermarks, with spread spectrum signal techniques used to recover the signature from the encrypted data....
JMM2
2008
13 years 9 months ago
2008
In this work, an adaptive image compression algorithm is proposed based on the prediction of AC coefficients in Discrete Cosine Transform (DCT) block during reconstruction of image...
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 ...