Title :
An Image Watermarking Scheme Based on Orthogonal Moments
Author :
Yap, Pew-Thian ; Paramesran, Raveendran
Author_Institution :
Dept. of Electr. Eng., Univ. of Malaya, Kuala Lumpur
Abstract :
This paper proposes a new image watermarking scheme using the set of Tchebichef moments. The watermark is constructed as an independent identically distributed (i.i.d) Gaussian random vector that is imperceptibly inserted in a spread-spectrum-like fashion into the perceptually significant spectral components of the data. The watermark is robust to distortion caused by JPEG coding, dithering and image scaling. Experimental results are provided to support these claims.
Keywords :
Gaussian processes; image coding; watermarking; JPEG coding; Tchebichef moments; image dithering; image scaling; image watermarking; independent identically distributed Gaussian random vector; orthogonal moments; spread-spectrum; Degradation; Discrete cosine transforms; Image coding; Numerical stability; Polynomials; Pressing; Robustness; Spread spectrum communication; Transform coding; Watermarking;
Conference_Titel :
TENCON 2005 2005 IEEE Region 10
Conference_Location :
Melbourne, Qld.
Print_ISBN :
0-7803-9311-2
Electronic_ISBN :
0-7803-9312-0
DOI :
10.1109/TENCON.2005.301147
