A Robust Watermarking Algorithm for 2D CAD Engineering Graphics Based on DCT and Chaos System

摘要：

　　As the computer aided design becomes widely used, the copyright violation of two-dimensional CAD engineering graphics urgently needs to be studied.But the current watermarking algorithms have many flaws such as lack of robustness, watermark capacity limitation, and so on.A new algorithm which based on DCT transformation and chaos system is proposed in this paper.The algorithm adopts DCT in watermark preprocessing to reduce the watermark information redundancy, and then classifies the entities of their handles through the chaos system to ensure the security of watermark.The watermark is embedded by modifying entitys line width slightly utilizing HVS characteristics.Experimental results show that the proposed algorithm has good imperceptibility; its robust against operations such as translation, rotation, scaling, entity addition/deletion and combination of these attacks.The algorithm embeds the meaningful image into 2D CAD engineering graphic; its useful in practical applications.

关键词： 2D engineering graphic DCT chaos system copyright protection

作者: Jingwen Wu Quan Liu Jiang Wang Lu Gao

作者单位: School of Information Engineering, Wuhan University of Technology,Wuhan, Hubei Province, 430070, China;Key Lab.of Broadband Wireless Networks, Wuhan University of Technology,Wuhan, Hubei Province, 430070, China

会议类型: 国际会议

会议名称: 4th international Conference,ICSI2013(第4届群体智能国际会议)

会议地点: 哈尔滨

会议语种:英文

页码: 215-223

在线出版日期: 2013-06-12（万方平台首次上网日期，不代表论文的发表时间）