An Improved Unblocking Images Watermarking Algorithm Based on DWT and SVD

SHI Jing; LIN Ke-zheng; QIN Li-ping

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An Improved Unblocking Images Watermarking Algorithm Based on DWT and SVD

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- An Improved Unblocking Images Watermarking Algorithm Based on DWT and SVD
- Vol. 14, Issue 5, Pages: 35-38(2009)
- 作者机构：
  
  哈尔滨理工大学计算机科学与技术学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP309.7
- Published：2009
- 稿件说明：
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SHI Jing, LIN Ke-zheng, QIN Li-ping. An Improved Unblocking Images Watermarking Algorithm Based on DWT and SVD[J]. 2009, 14(5): 35-38.
DOI：

SHI Jing, LIN Ke-zheng, QIN Li-ping. An Improved Unblocking Images Watermarking Algorithm Based on DWT and SVD[J]. 2009, 14(5): 35-38. DOI：

摘要

为同时提高水印不可见性与鲁棒性

提出一种基于DWT和SVD的改进图像水印算法.先将载体进行小波变换

然后在分块后进行奇异值分解

根据自适应原理选取嵌入数据进行水印嵌入.检测水印不需原图像

属于盲检测算法.实验结果表明

该算法增强了水印鲁棒性

且提取水印精确度更高.与单独块奇异值分解量化法作比较.实验证明

本算法具有更好的优势.

Abstract

In order to improve the invisibility and robustness of watermark

a new improved image watermarking algorithm based on DWT and SVD was presented.Firstly wavelet transform was adopted on the carrier

then did singular value decomposition after unblocking

embed watermark on chosen data according to the theory of self-adaptive.It was a blind watermarking algorithm.The result of experiments showed that this algorithm enhanced the watermarking robustness and improved the precision.At last

compared with the separat...

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