A Watermarking Method with a New SS Technique

Among numerous techniques of information concealment, Spread spectrum watermarking (SSW) has proved to yield improved results when robustness against attack is at a premium. SSW hides information which is called watermark by spreading its spectrum and then adding them to a host image as a watermarked image. Spreading spectrum is done by a pseudo-noise (PN) sequence. But in standard SSW approaches, receiver must use a separate channel to achieve PN sequence used at the transmitter for detecting hidden information. The unique PN sequence must have a low cross correlation and thereby can be duplicated easily by hostile attackers. In this paper a novel approach based on the unconventional Random Encoding Spread Spectrum is proposed for recovering the spreading sequence of watermark signal without any information from the transmitter. It is contributed a higher secure feature by using of the time-varying random encoded spread spectrum.

[1]  Lisa M. Marvel,et al.  Hiding information in images , 1998, Proceedings 1998 International Conference on Image Processing. ICIP98 (Cat. No.98CB36269).

[2]  Morteza Khademi,et al.  Detecting Hidden Information from a Spread Spectrum Watermarked Signal by Genetic Algorithm , 2006, 2006 IEEE International Conference on Evolutionary Computation.

[3]  Gabriela Csurka,et al.  A Bayesian approach to spread spectrum watermark detection and secure copyright protection for digital image libraries , 1999, Proceedings. 1999 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (Cat. No PR00149).

[4]  Mehrdad Ardebilipour,et al.  Spread Spectrum Code Estimation by Particle Swarm Algorithm , 2007, IEC.

[5]  Lajos Hanzo,et al.  Genetic algorithm assisted joint multiuser symbol detection and fading channel estimation for synchronous CDMA systems , 2001, IEEE J. Sel. Areas Commun..

[6]  Jean-Marc Chassery,et al.  A new CDMA technique for digital image watermarking, enhancing capacity of insertion and robustness , 2001, Proceedings 2001 International Conference on Image Processing (Cat. No.01CH37205).

[7]  R. Chandramouli,et al.  Secret key estimation in sequential steganography , 2005 .

[8]  Robert C. Dixon,et al.  Spread‐spectrum systems , 1976 .

[9]  M.B. Pursley,et al.  Crosscorrelation properties of pseudorandom and related sequences , 1980, Proceedings of the IEEE.

[10]  Mehrdad Ardebilipour,et al.  Spread Spectrum Code Estimation by Genetic Algorithm , 2007 .

[11]  Roger L. Peterson,et al.  Introduction to Spread Spectrum Communications , 1995 .