A Novel Scrambling Digital Image Watermarking Algorithm Based on Contourlet Transform  

作　　者：WANG Taiyue LI Hongwei 

机构地区：[1]School of Mathematics and Physics,Hubei Polytechnic University [2]School of Mathematics and Physics,China University of Geosciences

出　　处：《Wuhan University Journal of Natural Sciences》2014年第4期315-322,共8页武汉大学学报（自然科学英文版）

基　　金：Supported by the National Natural Science Foundation of China(61071188);the Natural Science Foundation of Hubei Province(2009CDB077)

摘　　要：Digital watermarking technology is a very good method for protecting copyright. A novel image watermarking scheme based on contourlet transform is proposed. The original carrier image was executed in contourlet transform and four directions of the second level subband were marked, afterwards, the scrambled digital watermarking is embedded in them. The experimental results show that the proposed watermarking scheme is feasible and simple. The embedded watermarking images have tiny difference with the original images and the extracted watermarking is accurate. It is imperceptible and robust against various signals processing such as noise adding, rotating, altering, cropping, compression, brightness variations and mosaic, etc.Digital watermarking technology is a very good method for protecting copyright. A novel image watermarking scheme based on contourlet transform is proposed. The original carrier image was executed in contourlet transform and four directions of the second level subband were marked, afterwards, the scrambled digital watermarking is embedded in them. The experimental results show that the proposed watermarking scheme is feasible and simple. The embedded watermarking images have tiny difference with the original images and the extracted watermarking is accurate. It is imperceptible and robust against various signals processing such as noise adding, rotating, altering, cropping, compression, brightness variations and mosaic, etc.

关 键 词：copyright protection contourlet transform humanvisual system WATERMARKING ROBUSTNESS 

分 类 号：TN911[电子电信—通信与信息系统]