A Digital Image Watermarking Algorithm Based on Chaos and Fresnel Transform
In this paper, a digital image watermarking algorithm based on chaos and Fresnel transform is proposed. The original image is transformed into Fresnel diffraction plane by distance parameter, and watermark information is embedded in its amplitude spectrum after scrambled by chaotic sequence. The watermark information can be extracted without original image, and there is little influence on the original image after embedding. Chaotic scrambling can encrypt watermark information, and Fresnel transform can provide different diffraction planes with different parameters, so attackers couldnt get right watermark information without knowing the parameters in these two processes. During the experiments, the algorithm is also robust against various common attacks, such as filtering, adding noise, JPEG compression and crop and so on. Experimental results show that this watermarking algorithm can provide enough invisibility, security and robustness.
digital image watermarking chaos Fresnel transform copyright protection
Zhaoshan Wang Shanxiang Lv Jiuchao Feng Yan Sheng
School of Electronic and Information Engineering South China University of Technology Guangzhou, Chi Engineering Department Guangzhou Marine Geological Survey Bureau Guangzhou, China
国际会议
南昌
英文
504-508
2012-08-26（万方平台首次上网日期，不代表论文的发表时间）