A Zero-watermarking Algorithm of Color Image Based on SVD and DWT

PAN Huang-qiong; CHEN Guang-xi; DING Yong; LI Feng

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A Zero-watermarking Algorithm of Color Image Based on SVD and DWT

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- A Zero-watermarking Algorithm of Color Image Based on SVD and DWT
- Vol. 29, Issue 5, Pages: 50-53(2012)
- 作者机构：
  
  桂林电子科技大学机构数学与计算科学学院,广西,桂林,541004
- 作者简介：
- 基金信息：
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  CLC：
- Published：2012
- 稿件说明：
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潘黄琼, 陈光喜, 丁勇, 李峰. 彩色图像DWT变换下的块SVD零水印[J]. 微电子学与计算机, 2012, 29(5): 50-53.

PAN Huang-qiong, CHEN Guang-xi, DING Yong, et al. A Zero-watermarking Algorithm of Color Image Based on SVD and DWT[J]. 2012, 29(5): 50-53.
潘黄琼, 陈光喜, 丁勇, 李峰. 彩色图像DWT变换下的块SVD零水印[J]. 微电子学与计算机, 2012, 29(5): 50-53. DOI：

PAN Huang-qiong, CHEN Guang-xi, DING Yong, et al. A Zero-watermarking Algorithm of Color Image Based on SVD and DWT[J]. 2012, 29(5): 50-53. DOI：

摘要

为了提高水印技术的鲁棒性

提出了彩色图像离散小波变换 (DWT) 下的块奇异值分解 (SVD) 的零水印.首先对原始载体图像进行离散小波变换

然后选择低频子带进行分块

且对每一块进行奇异值分解

水印则由分解得到的最大前m个奇异值产生.实验结果表明

算法对各种攻击有较强的鲁棒性.

Abstract

In order to enhance the robustness of watermark technology

a zero-watermark is proposed based on color image using block singular value decomposition (SVD) under the discrete wavelet transformation (DWT) .It conducts DWT with the original image

divides its low frequency band into blocks

and conducts SVD with every block.Zero-watermark is generated by the decomposition of the former largest singular values of mof the block matrix.Experiments show that the proposed algorithm has strong robustness against various attacks.

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