期刊文献+

基于小波变换和奇异值分解的图像水印算法 被引量:8

A algorithm of image watermarking based on DWT & SVD
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摘要 针对多媒体资源的版权保护问题,结合离散小波变换和奇异值分解技术的优点,提出了一种基于离散小波变换和奇异值分解的图像水印算法.该算法首先将原始宿主图像分解为4个频带(LL、HL、LH和HH),再对水印图像做奇异值分解,并修改宿主图像的离散小波变换系数和水印图像的奇异值.实验结果表明,该算法不仅具有良好的不可见性,而且对诸如滤波、几何攻击、JPEG压缩和旋转等常见的图像攻击具有很强的鲁棒性. A algorithm of image watermarking based on the discrete wavelet transform(DWT) and singular value decomposition(SVD) is proposed for copyright protection of multimedia resources.In this algorithm,after decomposing the original host image into four bands(LL,HL,LH,and HH),we apply the SVD to watermark image,and modify DWT coefficients of the host image with the singular values of the watermark image.Experimental results show that this new image watermarking algorithm has a good imperceptibility of embedded watermark image and robust against common attacks such as filtering,geometric attack,JPEG compression and rotation,etc.
出处 《武汉大学学报(工学版)》 CAS CSCD 北大核心 2011年第1期120-123,共4页 Engineering Journal of Wuhan University
基金 国家自然科学基金(编号:40571128) 国家民委重点科研项目(编号:Mzy02004)
关键词 数字水印 小波变换 奇异值分解 频带 相关系数 watermark wavelet transform singular value decomposition bands correlation coefficient
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参考文献8

  • 1蒋天发.网络信息安全及数字水印技术的研究[J].武汉理工大学学报(交通科学与工程版),2003,27(6):826-828. 被引量:18
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  • 4KinTak U,ShengDun Hu,Dongxu Qi,et al. A robust image watermarking algorithm based on non-uniform rectangular partition and DCT-SVD[C]// 2010 International Conference on Measuring Technology and Mechatronics Automation ( ICMTMA ), Changsha, China, 2010,5 : 327-330.
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二级参考文献18

  • 1蒋天发,周熠,何秉姣,柳春华,王强,王涛.基于感知数字水印对音频信息稳健性影响的研究[J].武汉大学学报(工学版),2004,37(6):93-96. 被引量:6
  • 2谢海宁,王先培,楼越焕,曾立波,胡继明.数字水印在谱图共享系统中的一种应用[J].武汉大学学报(工学版),2004,37(6):106-109. 被引量:1
  • 3陈灏.空域数字图像水印算法研究与实现[J].现代电子技术,2007,30(10):149-150. 被引量:7
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