Abstract-- It has recently been discovered that using pseudorandom sequences as carriers in spread-spectrum techniques for data-hiding is not at all a sufficient condition for ensu...
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....
Ron G. van Schyndel, Andrew Z. Tirkel, Imants D. S...
— Recently, the direct sequence spread-spectrum (DSSS)-based technique has been proposed to trace anonymous network flows. In this technique, homogeneous pseudo-noise (PN) codes...
Weijia Jia, Fung Po Tso, Zhen Ling, Xinwen Fu, Don...
This paper presents a watermarking algorithm that is suitable for the data represented in floating- or fixed-point numbers. By keeping the modulation information, every value in th...
Block coders are among the most common compression tools available for still images and video sequences. Their low computational complexity along with their good performance make ...
Yaakov Tsaig, Michael Elad, Gene H. Golub, Peyman ...