计算机应用与软件Issue(3)：281-285,5.DOI:10.3969/j.issn.1000-386x.2014.03.074
基于 Krawtchouk 矩和 NSCT 变换的鲁棒零水印算法
A ROBUST ZERO-WATERMARKING ALGORITHM BASED ON KRAWTCHOUK MOMENTS AND NSCT
摘要
Abstract
In order to solve the contradiction between the imperceptibility and the robustness in current digital watermarking,we design a robust zero-watermarking algorithm which is based on Krawtchouk moments and nonsubsampled contourlet transform (NSCT).The algorithm first decomposes image with NSCT,then constructs the eigenvector by calculating the lower order Krawtchouk moments invariant of its low frequency component,finally obtains the copyright information of original image through the operation of eigenvector and watermark. Experimental results show that the scheme has strong robustness against common signal processing,meanwhile the security of the algorithm is guaranteed by using secret keys.关键词
数字水印/Krawtchouk 矩/非采样 Contourlet 变换/特征向量Key words
Digital watermarking/Krawtchouk moments/Non-subsampled Contourlet transform (NSCT)/Eigenvector分类
信息技术与安全科学引用本文复制引用
张春凯,杨德志,丛佩丽..基于 Krawtchouk 矩和 NSCT 变换的鲁棒零水印算法[J].计算机应用与软件,2014,(3):281-285,5.基金项目
国家自然科学基金项目（F020704）。 （）
