文章摘要
孙刘杰,徐卓.一种基于 Contourlet 变换的彩色图像全息水印算法[J].包装工程,2013,34(9):10-13.
SUN Liu-jie,XU Zhuo.Novel Color Image Hologram Watermarking Algorithm Based on Contourlet Transform[J].Packaging Engineering,2013,34(9):10-13.
一种基于 Contourlet 变换的彩色图像全息水印算法
Novel Color Image Hologram Watermarking Algorithm Based on Contourlet Transform
投稿时间:2013-01-14  修订日期:2013-05-10
DOI:
中文关键词: 数字水印  Contourlet 变换  全息加密  彩色图像
英文关键词: digital watermarking  contourlet transform  computer generated hologram  color image
基金项目:
作者单位
孙刘杰 上海理工大学, 上海 200093 
徐卓 上海理工大学, 上海 200093 
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中文摘要:
      提出了一种结合了全息水印加密技术和 Contourlet 变换技术的彩色图像水印算法。 算法首先将 RGB 模式的水印载体图像转换至 YCrCb 颜色空间,选取亮度分量作为水印载体通道,对其进行多层 Contourlet 分解,得到细节子带图像;而后对二值水印图像进行傅里叶全息加密,将加密后的图像嵌入至载体图像的 Contourlet变换系数中。 仿真实验结果表明,该水印算法具有良好的不可见性,对于常见的几何变换及多种攻击具有良好的鲁棒性。
英文摘要:
      A novel color image watermarking algorithm based on contourlet transformation and computer generated hologram was put forward. Firstly, the watermarked host image in RGB mode was converted to YCrCb color space, and contourlet transform was performed on the luminance Y component to get detailed sub band images. The watermarked image was encrypted with Fourier hologram technology. Finally, the encrypted digital watermark was embedded into decomposed detail sub bands of discrete contourlet transform. Simulation results showed that the proposed algorithm has good invisibility and is robust against common geometric transformation and multiple attacks.
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