DocumentCode :
535066
Title :
Reversible watermarking of 3D mesh models using prediction-error expansion
Author :
Zhu, Anping ; Zhang, Caiming ; Yang, Xingqiang ; Gao, Xifeng
Author_Institution :
Sch. of Comput. Sci. & Technol., Shandong Univ., Jinan, China
Volume :
3
fYear :
2010
fDate :
16-18 Oct. 2010
Firstpage :
1171
Lastpage :
1175
Abstract :
A reversible watermarking scheme for 3D meshes based on prediction-error expansion is proposed in this paper. In our algorithm, we embed the watermark by slightly changing the positions of some vertices in the mesh model. For a vertex to be altered for embedding, the centroid of its adjacent vertices is calculated as datum position which is kept unchanged during both embedding and extracting processes. The prediction-error, that is, half the distance from the centroid to the vertex position, is expanded for data embedding. One of the most notable features of our algorithm is that the distortion can be easily controlled in spite of the complex topology of the mesh models. Further more, the watermarked model is capable of resisting such attacks as translation, rotation and random noise. Experimental results demonstrate high capacity and low distortion of the proposed data hiding scheme.
Keywords :
data encapsulation; predictor-corrector methods; watermarking; 3D mesh models; adjacent vertices; centroid; data embedding; data hiding; datum position; prediction-error expansion; reversible watermarking; Prediction algorithms; Robustness; Signal to noise ratio; Solid modeling; Three dimensional displays; Watermarking;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Image and Signal Processing (CISP), 2010 3rd International Congress on
Conference_Location :
Yantai
Print_ISBN :
978-1-4244-6513-2
Type :
conf
DOI :
10.1109/CISP.2010.5646790
Filename :
5646790
Link To Document :
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