Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/38000
標題: A PCA AND PERTURB BASED FRAGILE WATERMARKING SCHEME FOR 3D MODELS
作者: Wang, J.T.
喻石生
Wang, P.C.
Yu, S.S.
關鍵字: Fragile watermarking
Three dimensional (3D) models
Principal component
analysis (PCA)
Verification
Tampering detection
point-sampled geometry
lsb substitution
images
algorithm
meshes
期刊/報告no:: International Journal of Innovative Computing Information and Control, Volume 6, Issue 7, Page(s) 3145-3156.
摘要: In this paper, a new fragile watermarking scheme that enables the verification of 3D models for detecting unauthorized alterations is presented. The principal component analysis (PCA) is adopted to produce the PCA coordinate system and make the system robust to similarity transformation attacks. Before watermark embedding, the coordinates of illegitimate intervals are slightly perturbed to ensure all intervals legitimate. In order to control distortion, a special quantization technique is proposed to watermark a legitimate interval. Experimental results show that 100% vertices of the cover model can be embedded and extracted in the proposed method. Moreover, the distortion of the stego model is insignificant and under controlled by quantization step setting. Finally, the proposed method is immune to the causality, convergence and embedding holes problems.
URI: http://hdl.handle.net/11455/38000
ISSN: 1349-4198
Appears in Collections:資訊科學與工程學系所

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