A DCT Domain Blind Watermarking Algorithm Based on Correlation

摘要：

In order to promote the copyright protection,propose a correlation based DCT domain blind watermarking algorithm.Conduct 8×8 blocks of DCT (discrete cosine transform) transform to original image first,and generate a polarity matrix on the basis of the relation between DC and medium frequency coefficients in each transformed block.Compare the polarity matrix with the optimal scrambled binary watermark and then modify the medium frequency coefficient to achieve the purpose of watermark embedding.The original image is not necessary- in watermark extracting process.A multitude of simulation results indicate that the algorithm is robust to such image processing as shearing,JPEG compression and salt & pepper noise.

关键词： Copyright Protection Didiial watermarking Scrambling Blind extacting DCT

作者: Wang Juan Lai Siyu Liu Yi

作者单位: Department of Computer Science China West Normal University NanChong,China Department of Medical Image North Sichuan Medical College NanChong,China Office of Academic Affairs China West Normal University NanChong,China

会议类型: 国际会议

会议名称: 2011 3rd International Conference on Computer and Network Technology(ICCNT 2011)(2011第三届IEEE计算机与网络技术国际会议)

会议地点: 太原

会议语种:英文

页码: 41-44

在线出版日期: 2011-02-26（万方平台首次上网日期，不代表论文的发表时间）