A Digital Image Copyright Protection Scheme Based on Visual Cryptography

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Title:	A Digital Image Copyright Protection Scheme Based on Visual Cryptography
Authors:	黃仁俊=Hwang, Ren-junn
Contributors:	淡江大學資訊工程學系
Keywords:	image watermark;visual cryptography;copyright protection
Date:	2000-09
Issue Date:	2010-12-01 10:29:50 (UTC+8)
Publisher:	臺北縣：淡江大學
Abstract:	A simple and efficient watermark method is proposed in this paper. The watermark method is an excellent technique to protect the copyright ownership of a digital image. The proposed watermark method is built up on the concept of visual cryptography. According to the proposed method, the watermark pattern does not have to be embedded into the original image directly, which makes it harder to detect or recover from the marked image in an illegal way. It can be retrieved from the marked image without making comparison with the original image. The notary also can off-line adjudge the ownership of the suspect image by this method. The watermark pattern can be any significant black/white image that can be used to typify the owner. Experimental results show that the watermark pattern in the marked image has good transparency and robustness. By the proposed method, all the pixels of the marked image are equal to the original image.
Relation:	淡江理工學刊=Tamkang journal of science and engineering 3(2)，頁97-106
DOI:	10.6180/jase.2000.3.2.04
Appears in Collections:	[Graduate Institute & Department of Computer Science and Information Engineering] Journal Article

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