Authors:
Ikbel Sayahi
;
Akram Elkefi
;
Mohamed Koubaa
and
Chokri Ben Amar
Affiliation:
Sfax University, Tunisia
Keyword(s):
3D Watermarking, Multiresolution Mesh, Wavelet Transform, Attacks, Robustness.
Related
Ontology
Subjects/Areas/Topics:
Applications
;
Applications and Services
;
Computer Vision, Visualization and Computer Graphics
;
Geometry and Modeling
;
Image-Based Modeling
;
Media Watermarking and Security
;
Pattern Recognition
;
Software Engineering
Abstract:
Digital watermarking for 3D meshes is a means to copyright protection. In this paper, we propose a robust
watermarking algorithm for 3D Meshes. We work on multiresolution, triangular and semi regular meshes
having various sizes. Our algorithm is able to insert high amount of information in the field of multiresolution .
For this reason, we apply a uniform scalling then a wavelet transform to the host mesh. Embedding step consist
on modifying wavelet coefficients vector according to the bit to be inserted. These techniques do not generate
a quality degradation of the mesh despite the important capacity adopted. Tests applied to various attacks
have shown the robustness of our algorithm against rotation, translation, uniform scaling, Noise addition,
smoothing, simplification and coordinate quantization. A comparison with literature revealed that we have a
remarkable improvement over the published results.