一种基于最优块的DWT-DCT-SVD的图像数字水印算法  

An Image Digital Watermarking Algorithm Based on DWT-DCT-SVD Using Optimal Block

作　　者：黄根岭 刘成 黄海于[2] HUANG Genling;LIU Cheng;HUANG Haiyu(Henan High-Speed Railway Operation and Maintenance Engineering Research Center,Zhengzhou He’nan 450000,China;School of Information Science and Technology Southwest Jiaotong University,Chengdu Sicuan 611756,China)

机构地区：[1]河南省高速铁路运营维护工程研究中心,河南郑州450000 [2]西南交通大学信息科学与技术学院,四川成都611756

出　　处：《电子器件》2021年第5期1234-1239,共6页Chinese Journal of Electron Devices

基　　金：河南省高等学校青年骨干教师计划项目(2018GGJS234)。

摘　　要：本文提出了一种最优块的DWT-DCT-SVD数字水印算法,首先对载体图像进行3级小波分解,在HH3分量上进行分块,利用HH3分量块的信息熵与HH3分量块的信息熵波动幅度最小,以及HH3分量块信息熵与周围HH3分量块信息熵波动幅度最小的原则选出最优嵌入水印块,再结合DCT和SVD技术嵌入水印,对比其他DWT-SVD数字水印算法表明,该算法具有更好的不可见性和鲁棒性。In this paper,a DWT-DCT-SVD watermarking algorithm for optimal blocks is proposed.Firstly,the carrier image is decomposed by 3-level wavelet,and the HH3 components are divided into blocks.Then,the best embedded watermark block is selected by using the principle that the information entropy of HH3 component blocks and the information entropy fluctuation amplitude of HH3 component blocks are the smallest,and the information entropy of HH3 component blocks and the information entropy fluctuation amplitude of surrounding HH3 component blocks are the smallest,and the watermark is embedded by DCT and SVD techniques.Comparing with other DWT-SVD digital watermarking algorithms,the proposed algorithm has better invisibility and robustness.

关 键 词：离散小波变换 离散余弦变换 奇异值分解 信息熵 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]