The Digital Image Watermarking Algorithm Based On Hyperchaos And DCT
Based on the hyperchaos and Discrete Cosine Transform (DCT) algorithm, combined with the Arnold scrambling method, a novel digital image watermarking algorithm is presented in this paper. The method makes use of Arnold method to weaken the correlation among the pixels of the watermarking and adopts srossler hyperchaotic sequence to encrypt the original watermarking. Furthermore, according to the character of human vision system (HVS), the original image is splitted into blocks, and the encrypted watermarking is embedded into some lowfrequency coefficients of the original image with different strength. The experiment results show that the scheme improves the invisibility and robustness.
hyperchaos DCT image watermarking Arnold Human vision system
ZHANG Yu-bo BI Hong-bo YU Hai-chao
Electricity and Information Engineering College Daqing Petroleum Institute Daqing,Heilongjiang 16331 Data networks Faculty Daqing Oilfield Culture Corporation Networks Company
国际会议
北京
英文
1-4
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）