An SVD Oriented Watermark Embedding Scheme with High Qualities for the Restored Images

ASIAIR > College of Computer Science > Department of Computer Science and Information Engineering > Journal Artical > Item 310904400/6456

Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/6456

Title:	An SVD Oriented Watermark Embedding Scheme with High Qualities for the Restored Images
Authors:	Chang, C. C.;Lin, C. C.;Hu, Y. S.
Keywords:	Watermark;Singular value decomposition;Intellectual property rights;Removable watermarking;Restored images
Date:	2007-06
Issue Date:	2009-12-17 06:58:04 (UTC+0)
Publisher:	Asia University
Abstract:	Considering Chang et al.?s SVD-based watermarking scheme, which successfully embeds watermarks into images, and its hidden watermarks can resist various attacks. In this paper, we further extend their idea so that the hidden watermarks can be removed to provide authorized users better image quality for later usage after the ownership of purchased images has been verified. To achieve our objective, we modify their embedding strategy, and the extra information required for later restoration is embedded into the least important non-zero coefficients of the S matrices in the image. Experimental results confirm that our scheme not only provides good image quality of watermarked images but also successfully restores images with high restoration quality.
Relation:	International Journal of Innovative Computing, Information and Control 3(3): 1-12
Appears in Collections:	[Department of Computer Science and Information Engineering] Journal Artical

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