Digital Copyright Protection Based on Dual Watermarking Algo
本文关键词：数字档案信息开发及应用管理中的图像水印保护技术，，由笔耕文化传播整理发布。
《Journal of Taiyuan Normal University(Natural Science Edition)》 2014-04
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Digital Copyright Protection Based on Dual Watermarking Algorithm
Zhu Yu;Taiyuan Police Prefessional College;
Visible watermark is visible on the vision in the electronic document and contains the author information,under certain conditions it can prevent illegal copying of specific information.However,the message presented by an emerged watermark is easily removed from the copied content because it is visible to the copier.One way to overcome this problem is to also use invisible watermarks which are robust against removal.However,mutual interference caused by embedding two different types of watermarks would degrade the performance of both types.A method has thus been developed in which frequency filtering is used to divide the content into two types of region,one for embedding an visible watermark and one for embedding invisible one.The visible one is embedded in a plain large region with low spatial frequency while the invisible one is not.Experimental evaluation demonstrated that image quality in the dual watermarking algorithm shows better performance than the traditional watermarking algorithm.
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【CateGory Index】：
TP309.7
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本文关键词：数字档案信息开发及应用管理中的图像水印保护技术，由笔耕文化传播整理发布。
本文编号：179380
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