72 search results - page 12 / 15 » A DCT Domain Visible Watermarking Technique for Images |
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....
ACIVS
2005
Springer
14 years 3 months ago
2005
Springer
Abstract. A novel frequency domain technique for image blocking artifact reduction is presented in this paper. For each block, its DC and AC coefficients are recalculated for artif...
PCM
2005
Springer
14 years 3 months ago
2005
Springer
In this paper, we propose a methodology for embedding watermark image data into color images. At the transmitter, the signature image is encoded by a multiple description encoder. ...
JMM2
2006
13 years 10 months ago
2006
In image authentication research, a common approach is to divide a given image into a number of smaller blocks, and embed a fragile watermark into each block. The modifications can...
TCSV
2008
13 years 10 months ago
2008
Look-up table (LUT)-based data hiding is a simple and efficient technique to hide secondary information (watermark) into multimedia work for various applications such as copyright ...