356 search results - page 21 / 72 » Foveated image watermarking |
IWDW
2007
Springer
14 years 4 months ago
2007
Springer
Abstract. Scaling attacks are well-known to be some of the most harmful strategies against quantization-based watermarking methods, as they desynchronize the decoder, completely ru...
SUTC
2008
IEEE
14 years 4 months ago
2008
IEEE
Digital watermarks have been embedded invisibly in digital media to protect copy rights of legal owners. The embedded watermarks can be extracted to indicate ownership originals. ...
Publication
A subband-DCT approach for image watermarking is proposed in this communication. The watermark is casted in a selected number of coefficients of all four bands of a one-level decom...
ISW
2000
Springer
14 years 1 months ago
2000
Springer
Generally, low frequency domain may be useful to embed a watermark in an image. However, if a watermark is embedded into low frequency components, blocking effects may occur in the...
ICIP
2002
IEEE
14 years 11 months ago
2002
IEEE
Geometric attacks are among the most challenging problems in present day watermarking. Such attacks are very simple to implement yet they can defeat most of the existing watermark...