一种基于DCT域的灰度级盲水印嵌入优化算法

计算机工程与应用 ›› 2007, Vol. 43 ›› Issue (18): 59-61.

一种基于DCT域的灰度级盲水印嵌入优化算法

马强^1,2,付艳茹³

1.浙江警官职业学院安防系,杭州 310018
2.北京邮电大学软件学院,北京 100876
3.浙江警官职业学院基础部,杭州 310018

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-06-21 发布日期:2007-06-21
通讯作者: 马强

Optimization arithmetic on gray-level blind watermarking embedding in DCT domain

MA Qiang^1,2,FU Yan-ru³

1.Department of Security and Protection,Zhejiang Officer Vocational College,Hangzhou 310018,China
2.School of Software,Beijing University of Posts and Telecommunications,Beijing 100876,China
3.Department of Basic Science,Zhejiang Officer Vocational College,Hangzhou 310018,China

Received:1900-01-01 Revised:1900-01-01 Online:2007-06-21 Published:2007-06-21
Contact: MA Qiang

摘要/Abstract

摘要： 从改进的角度,提出一种基于宿主图像的DCT域嵌入较大分辨率灰度级数字盲水印的优化算法。该算法采用视觉频率、图像灰度增强和灰度图像门限值JND量化选取DCT子块系数,对嵌入宿主图像的较大分辨率256级灰度水印先行压缩和自同构置乱,再行嵌入宿主图像。该算法在水印提取时无需宿主图像和原始水印的参与,较大幅度地提高了水印的嵌入量。实验结果表明此算法抵抗压缩的能力强,视觉图像无明显降质,具有较强的鲁棒性和顽健性。

Abstract: The goal of this work is to show an optimization arithmetic on gray-level blind watermarking with biggish resolution embedding in DCT domain based on the owner image．With visual frequency sensitivity,gray scale enhancement,Just Noticeable Distortion（JND） on gray-level image,this arithmetic selects DCT-block to compress watermarking image and make automorphic disorder,then embeds watermarking.This arithmetic has no use for the owner image when extracting watermarking,and embeds a great deal of watermarking.Experimental result proves that it is robust enough to resist JPEG compression,visual image has a higher fidelity,robustness and obstinacy．

马强^1,2,付艳茹³. 一种基于DCT域的灰度级盲水印嵌入优化算法[J]. 计算机工程与应用, 2007, 43(18): 59-61.

MA Qiang^1,2,FU Yan-ru³. Optimization arithmetic on gray-level blind watermarking embedding in DCT domain[J]. Computer Engineering and Applications, 2007, 43(18): 59-61.