文献类型：期刊文献

英文题名：Color image blind watermarking scheme based on QR decomposition

作者：Su, Qingtang[1,2];Niu, Yugang[2];Wang, Gang[1];Jia, Shaoli[3];Yue, Jun[1]

机构：[1]Lu Dong Univ, Sch Informat Sci & Engn, Yantai 264025, Peoples R China;[2]E China Univ Sci & Technol, Minist Educ, Key Lab Adv Control & Optimizat Chem Proc, Shanghai 200237, Peoples R China;[3]Lu Dong Univ, Sch Civil Engn, Yantai 264025, Peoples R China

年份：2014

卷号：94

期号：1

起止页码：219

外文期刊名：SIGNAL PROCESSING

收录：;EI(收录号：20133216581558);WOS:【SCI-EXPANDED(收录号:WOS:000327363300025)】；

基金：The research was partially supported by NNSF from China (61273073, 61074041, 61170161, and 61100115), National Science and Technology Pillar Plan Projects (2011BAD20B01, 2012BAD35B07), Shandong Province Science and Technology Plan Projects (2011YD01079, 2013GGB01075), Natural Science Foundation of Shandong Province (ZR2012FM008) and Natural Science Foundation of Ludong University. The authors would like to thank anonymous referees for their valuable comments and suggestions which lead to substantial improvements of this paper.

语种：英文

外文关键词：Image watermarking; Color image watermark; QR decomposition; Blind extraction

摘要：Most of the existing color image watermarking schemes use binary or gray-level image as watermark, and many of them belong to non-blind watermarking methods. It is a challenging problem to design a blind color image watermarking scheme. Based on QR decomposition, this paper proposes a novel blind image watermarking scheme to embed color watermark image into color host image, which is different from some existing works using the binary or gray-level image as watermark. Firstly, the color host image is divided to 4 x 4 non-overlapping pixel blocks. Then, each selected pixel block is decomposed by QR decomposition and the first row fourth column element in the matrix R is quantified for embedding the watermark information. In the extraction procedure, the watermark can be extracted from the watermarked image without the requirement of the original host image or the original watermark image. Experimental results, compared with the related existing methods, show that the proposed color image scheme has stronger robustness against most common attacks such as image compression, filtering, cropping, noise adding, blurring, scaling and sharpening etc. (C) 2013 Elsevier B.V. All rights reserved.