[1]华 梦,王 雷.基于DCT-DWT的FRFT数字水印算法[J].南京理工大学学报(自然科学版),2015,39(04):435.
 Hua Meng,Wang Lei.Method of digital watermark in FRFT domain based on DCT-DWT[J].Journal of Nanjing University of Science and Technology,2015,39(04):435.
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基于DCT-DWT的FRFT数字水印算法
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
39卷
期数:
2015年04期
页码:
435
栏目:
出版日期:
2015-08-31

文章信息/Info

Title:
Method of digital watermark in FRFT domain based on DCT-DWT
作者:
华 梦王 雷
南京理工大学 电子工程与光电技术学院,江苏 南京 210094
Author(s):
Hua MengWang Lei
School of Electronic Engineering and Optoelectronic Technology,NUST,Nanjing 210094,China
关键词:
离散余弦变换 离散小波变换 分数阶傅里叶变换 数字水印
Keywords:
discrete cosine transform discrete wavelet transform fractional Fourier transform digital watermarking
分类号:
TP301
摘要:
为了提高数字水印的鲁棒性、不可见性和安全性,该文提出了基于离散余弦变换-离散小波变换(Discrete cosine transform-discrete wavelet transform,DCT-DWT)文中的分数阶傅里叶变换(Fractional Fourier transform,FRFT)数字水印算法。该方法利用离散余弦变换的聚焦性、离散小波变换的多分辨率特性、分数阶傅里叶变换的时频性,把水印信息很好地嵌入到载体图像中,提高了水印的鲁棒性和不可见性,同时利用Arnold变换对水印进行加密,提高了数字水印的安全性。MATLAB仿真表明:该算法具有很好的安全性、鲁棒性和不可见性。
Abstract:
In order to improve the robustness,invisibility and security of digital watermark,this paper puts forward the fractional Fourier transform(FRFT)digital watermarking algorithm based on discrete cosine transform(DCT)and discrete wavelet transform(DWT).This method uses the focus of DCT,multiresolution of DWT and time-frequency of FRFT,the watermark information is embedded into the carrier image very well.At the same time,we use Arnold transform on the watermark encryption,security has been improved more.MATLAB simulation shows that the algorithm has good security,robustness and invisibility.

参考文献/References:

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相似文献/References:

[1]杨榆,雷敏,郭玉翠,等.基于小波和余弦变换组合的音频零水印算法[J].南京理工大学学报(自然科学版),2012,36(03):386.
 YANG Yu,LEI Min,GUO Yu-cui,et al.Audio Zero-watermarking Scheme in DCT-DWT[J].Journal of Nanjing University of Science and Technology,2012,36(04):386.

备注/Memo

备注/Memo:
收稿日期:2014-12-14 修回日期:2015-04-21
作者简介:华梦(1991-),男,硕士生,主要研究方向:数字图像处理,E-mail:376545479@qq.com; 通讯作者:王雷(1964-),男,博士,副研究员,主要研究方向:信息处理和图像处理,E-mail:wanglei@njust.edu.cn。
引文格式:华梦,王雷.基于DCT-DWT的FRFT数字水印算法[J].南京理工大学学报,2015,39(4):435-439.
投稿网址:http://zrxuebao.njust.edu.cn
更新日期/Last Update: 2015-08-31