A Novel Robust Digital Image Watermarking Algorithm based on Two Level DCT

CORC > 自动化研究所 > 中国科学院自动化研究所 > 数字内容技术与服务研究中心 > 新媒体服务与管理技术

	A Novel Robust Digital Image Watermarking Algorithm based on Two Level DCT
	Hu Guan; Zhi Zeng; Jie Liu; Shuwu Zhang
	2014
会议日期	2014.4.26-2014.4.28
会议地点	Hokkaido,Japan
关键词	Digital Image Watermarking Discrete Cosine Transformation Invisibility Robustness
英文摘要	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.
会议录	2014 International Conference on Information Science, Electronics and Electrical Engineering
内容类型	会议论文
源URL	[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]. 见:. Hokkaido,Japan. 2014.4.26-2014.4.28.