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A New Scheme for Watermarking Engineering Graph  

Zhanchuan, Cai (School of Information Science and Technology, Sun Yat-sen University)
Wei, Sun (School of Information Science and Technology, Sun Yat-sen University)
Changzhen, Xiong (School of Information Science and Technology, Sun Yat-sen University)
Dongxu, Qi (Faculty of Information Technology, Macao University of Science and Technology)
Publication Information
International Journal of CAD/CAM / v.6, no.1, 2006 , pp. 99-104 More about this Journal
Abstract
Engineering graph plays an important role in design and manufacture, such as architecture, machinery, manufacture, military. However, almost no persons consider the security and copyright of two-dimensional engineering graph. A novel method for two-dimensional engineering graph watermark based U system is proposed in this paper. Watermarks generated by this technique can be successfully extracted even after rotation, translation and scaling transform.
Keywords
Watermarking; Engineering graph; U-system; U descriptors;
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