National Changhua University of Education Institutional Repository : Item 987654321/9983
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题名: A Color Image Copyright Protection Scheme Based on Visual Cryptography and Discrete Cosine Transform
作者: Chang, Chin-Chen;Hsiao, Ju-Yuan;Yeh, Jyh-Chiang
贡献者: 資訊工程系
关键词: Discrete cosine transform;Intellectual property right;Visual cryptography
日期: 2002
上传时间: 2012-05-02T09:37:48Z
出版者: Maney Publishing
摘要: In this paper, a copyright protection scheme based on visual cryptography and discrete cosine transform for colour images is proposed. Note that the watermark emphasized here is a colour watermark. Instead of hiding a watermark in a colour image for identifying the ownership of the image, all that is required is to construct an ownership share according to a master share created from the colour image by applying discrete cosine transform plus a watermark used for copyright certification. By stacking the master share and the ownership share together, the watermark for ownership identification can be revealed through the utilization of visual cryptography plus a little additional computation. Additionally, the present scheme is also extremely suitable for multiple watermarking. The security of this scheme can be guaranteed via a pseudo random mechanism and the feature of visual cryptography. With substantial experimental results, the robustness of this scheme can be demonstrated against various image processing attacks.
關聯: The Imaging Science Journal, 50(3): 133-140
显示于类别:[資訊工程學系] 期刊論文

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