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	A geometry property based watermarking scheme for three dimensional meshes
	Zhang Jing ; Zheng Guoqin
	2010-05-06 ; 2010-05-06
关键词	Practical Theoretical or Mathematical/ computational geometry discrete cosine transforms mesh generation signal processing watermarking/ geometry property based watermarking robust watermarking three-dimensional triangle meshes one-dimensional discrete cosine transform DCT digital watermarking/ C6130B Graphics techniques C4260 Computational geometry C6130S Data security C5260B Computer vision and image processing techniques C1130 Integral transforms
中文摘要	In this article, we propose a robust watermarking scheme for three-dimensional triangle meshes. First, we calculate the distance of each vertex in the mesh to the center of the mesh. And we get a sequence of real numbers which are the values of distances. Second, we consider the real number sequence as a digital signal in spatial domain and transform it to a signal in frequency domain using one-dimensional discrete cosine transform (DCT). Third, we embed a watermark into the signal in frequency domain, and then transform it back to a digital signal in spatial domain. This new spatial-domain signal represents the new values of the distances after embedding a watermark. Finally, we modify the coordinates of the vertices making their distances to the mesh center satisfy these new values. Experiments show that this scheme is both simple to implement and fairly robust against common mesh attacks such as mesh simplification, mesh cropping, random noise added to the vertex coordinates etc.
语种	中文 ; 中文
出版者	Science Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/10050]
专题	清华大学
推荐引用方式 GB/T 7714	Zhang Jing,Zheng Guoqin. A geometry property based watermarking scheme for three dimensional meshes[J],2010, 2010.
APA	Zhang Jing,&Zheng Guoqin.(2010).A geometry property based watermarking scheme for three dimensional meshes..
MLA	Zhang Jing,et al."A geometry property based watermarking scheme for three dimensional meshes".(2010).

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