Title :
Robust Image Watermarking Scheme Based on Subsampling
Author :
Fu, Yonggang ; Shen, Ruimin ; Shen, Liping
Author_Institution :
Dept. of Comput. Sci. & Eng., Shanghai Jiao Tong Univ.
Abstract :
In this paper, a robust watermarking scheme is presented for digital images copyright protection. The image is firstly subsampled into four images, and then the randomly generated watermark sequence is embedded into the DFT domain of the four subsampled images respectively. The method takes advantage of the similarity among those subsampled images, and the robustness is greatly improved than traditional spread spectrum watermarking scheme. Experimental results support the conclusions well
Keywords :
discrete Fourier transforms; image sampling; watermarking; DFT domain; digital image copyright protection; image subsampling; robust image watermarking; spread spectrum watermarking; Authentication; Fourier transforms; Image processing; Information technology; Pixel; Principal component analysis; Robustness; Spread spectrum communication; Symmetric matrices; Watermarking; Robustness; Subsampling; Watermarking;
Conference_Titel :
Information Technology and Applications, 2005. ICITA 2005. Third International Conference on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7695-2316-1
DOI :
10.1109/ICITA.2005.240
