Blind Watermarking for CAD Models Based on Identification

Xun Liu; Yin Zhang; Nan Liu; Zhi Yang Chen

doi:10.4028/www.scientific.net/AMR.479-481.245

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 479-481Blind Watermarking for CAD Models Based on...

Blind Watermarking for CAD Models Based on Identification

Abstract:

Currently there has been much interested in developing the watermarking for 3D graphic data of NURBS or mesh model, for its function of copyright protecting, private detection under the network environment. Since the majority of computer aided design (CAD) applications employ parametric curves and surfaces, this paper proposes a watermarking mechanism for CAD models, those employ non-uniform rational B-spine (NURBS) curves and surfaces as their main shape-defining primitives. This algorithm using relative knot insertion method embeds the watermarks generated by features sequence identification into the NURBS primitives. The shapes are exactly preserved. We don’t need ether original model or original message to extract the watermarks from the watermarked models, since it is blind. By experimental result, we confirmed the watermarking mechanism is robust against most common attacks.

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Periodical:

Advanced Materials Research (Volumes 479-481)

Pages:

245-249

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https://doi.org/10.4028/www.scientific.net/AMR.479-481.245

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Online since:

February 2012

Authors:

Xun Liu, Yin Zhang, Nan Liu, Zhi Yang Chen

Keywords:

CAD Models, Identification, NURBS, Robust Watermarking, Watermarking

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