A Novel Image Digital Watermark Algorithm with Weighted Fractional Calculus Based on Wavelet Coefficients
A novel digital watermark algorithm, based on fractional calculus and wavelet transform, is proposed in this paper. It makes full use of the characteristic of the high sensitive fractional order. The algorithm makes sinusoidal signal by fractional Cauchy formula with two differential orders. The sampled signals of the differential signals were superimposed as the pseudo-random sequence which is used to scramble the watermark. By exchanging the high-frequency coefficients of the carrier image, the scrambled watermark was embedded into the carrier image. Experimental results show that this novel algorithm is robust to a number of regular geometric attacks and many image processing operations. The new method given in this paper has a good performance on both robustness and invisibility.
digital watermarking fractional calculus wavelet transform differential-order
Qi-Guang MIAO Cheng Shi Wei Wang
School of Computer Science Xidian University Xian, Shaanxi, China Department of Information Engineering Shanxi Technical College of Finance & Economics Xianyang, Shaa
国际会议
太原
英文
610-613
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）