A Novel Robust Digital Image Watermarking Algorithm based on Two Level DCT
Hu Guan; Zhi Zeng; Jie Liu; Shuwu Zhang
2014
会议名称International Conference on Information Science, Electronics and Electrical Engineering
会议录名称2014 International Conference on Information Science, Electronics and Electrical Engineering
会议日期2014.4.26-2014.4.28
会议地点Hokkaido,Japan
摘要In this paper, we propose a novel blind digital image watermarking algorithm which is resilient to many kinds of image processing attacks and geometric distortions. To embed the watermark, we first map the original watermark to another spread one aiming to fit for the image size and then embed it into the image two-level DCT coefficients we selected using a specified rule. We extract the watermark using two-level DCT accordingly with the help of the correlation scheme. Comparing with other achievements, our proposed schemes, including spread spectrum watermark generation, block-number-fixed image segmentation, two-level DCT and the feature vector extraction rule, play an important role in improving the watermark robustness. Experimental results demonstrate that our method can not only resist common image processing attacks, but also geometric distortions, such as scaling, aspect ratio changing, flip, rotation, and some kinds of combined transforms.
关键词Digital Image Watermarking Discrete Cosine Transformation Invisibility Robustness
文献类型会议论文
条目标识符http://ir.ia.ac.cn/handle/173211/15400
专题数字内容技术与服务研究中心_新媒体服务与管理技术
通讯作者Hu Guan
作者单位Institute of Automation, Chinese Academy of Sciences
推荐引用方式
GB/T 7714
Hu Guan,Zhi Zeng,Jie Liu,et al. A Novel Robust Digital Image Watermarking Algorithm based on Two Level DCT[C],2014.
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文件名: A Novel Geometrically Invariant Blind Robust Watermarking Algorithm Based on SVD and DCT(IASP-2012).pdf
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