A Watermarking Framework for Subdivision Surfaces

Guillaume Lavoué 1 Florence Denis 1 Florent Dupont 1 Atilla Baskurt 1
1 M2DisCo - Geometry Processing and Constrained Optimization
LIRIS - Laboratoire d'InfoRmatique en Image et Systèmes d'information
Abstract : This paper presents a robust watermarking scheme for 3D subdivision surfaces. Our proposal is based on a frequency domain decomposition of the subdivision control mesh and on spectral coefficients modulation. The compactness of the cover object (the coarse control mesh) has led us to optimize the trade-off between watermarking redundancy (which insures robustness) and imperceptibility by introducing two contributions: (1) Spectral coefficients are perturbed according to a new modulation scheme analyzing the spectrum shape and (2) the redundancy is optimized by using error correcting codes. Since the watermarked surface can be attacked in a subdivided version, we have introduced a so-called synchronization algorithm to retrieve the control polyhedron, starting from a subdivided, attacked version. Through the experiments, we have demonstrated the high robustness of our scheme against both geometry and connectivity alterations.
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Guillaume Lavoué, Florence Denis, Florent Dupont, Atilla Baskurt. A Watermarking Framework for Subdivision Surfaces. Workshop on Multimedia Content Representation, Classification and Security (MRCS), Sep 2006, Istanbul, Turkey, Turkey. pp.223-231, ⟨10.1007/11848035_31⟩. ⟨hal-01528562⟩



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