tailieunhanh - Báo cáo hóa học: " Research Article A Novel Robust Mesh Watermarking Based on BNBW"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article A Novel Robust Mesh Watermarking Based on BNBW | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2011 Article ID216783 9 pages doi 2011 216783 Research Article A Novel Robust Mesh Watermarking Based on BNBW Liping Chen 1 2 Xiangzeng Kong 1 Bin Weng 1 Zhiqiang Yao 1 3 and Rijing Pan1 1 Key Laboratory of Network Security and Cryptology Fujian Normal University Fuzhou 350007 China 2 College of Mathematics and Computer Science Fujian Normal University Fuzhou Fujian 350007 China 3 Faculty of Software Fujian Normal University Fuzhou 350007 China Correspondence should be addressed to Xiangzeng Kong xzkongfjnu@ Received 15 June 2010 Revised 27 October 2010 Accepted 15 February 2011 Academic Editor Dimitrios Tzovaras Copyright 2011 Liping Chen et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. As a solution to copyright protection of the digital media digital watermarking techniques have been developed for embedding specific information to identify the owner in the host data imperceptibly. Nowadays most watermarking methods mainly focused on digital media such as images video audio and text and very few watermarking methods have been presented for 3D models relatively. In the paper a new robust watermarking scheme is presented which is based on biorthogonal nonuniform B-spline wavelets BNBW in the frequency domain for the purpose of copyright protection in the area of CAD CAM CAE and CG. The watermark is embedded by modulating the wavelet coefficient vectors with the watermark in the frequency domain. The relative experiments prove that this approach not only can withstand common attacks on 3D models such as polygon mesh simplifications addition of random noise model cropping translation rotation scaling as well as a combination of such attacks but also can detect and locate tampered vertices. 1. .

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