计算机应用与软件Issue(9)：263-267,333,6.DOI:10.3969/j.issn.1000-386x.2014.09.066
基于四元数域的彩色图像双重零水印算法
DOUBLE ZERO-WATERMARKING ALGORITHM BASED ON QUATERNION FOR COLOUR IMAGES
摘要
Abstract
This paper presents a double zero-watermarking algorithm,it is based on quaternion discrete Fourier transform (QDFT),quaternion discrete cosine transform (QDCT)and quaternion singular value decomposition (QSVD).First,we represent the colour imagewith quaternion model and carry out chunked QDFT,generate a binary sequence by comparing the amplitude sizes of partial coefficients ofeach block.Then,we apply QDCT and QSVD to each original image block,and use the amplitudes of singular value matrix and aroundquaternion matrix to generate another binary sequence.At last,we combine the binary sequence and the copyright information to producezero-watermarking,and register it in intellectual property right (IPR)centre.Experiments show that the algorithm is very robust to commonattacks,some composite attacks and some possible future attacks.关键词
彩色图像/四元数傅里叶变换/四元数余弦变换/四元数奇异值分解/零水印Key words
Colour image/Quaternion discrete Fourier transform/Quaternion discrete cosine transform/Quaternion singular value dispo-sition/Zero-watermarking分类
信息技术与安全科学引用本文复制引用
冯银波,陈善学..基于四元数域的彩色图像双重零水印算法[J].计算机应用与软件,2014,(9):263-267,333,6.基金项目
国家自然科学基金项目（61271260，61071116，61102062）；重庆市自然科学基金项目（CSTC2010BB2407， CSTCJJA40002）；重庆市教委科学研究项目 （）
