DMCA
A watermarking framework for subdivision surfaces
| Venue: | in Proc. of LNCS, vol. 4195, Multimedia Content Representation, Classification and Security |
| Citations: | 1 - 0 self |
BibTeX
@INPROCEEDINGS{Lavoué_awatermarking,
author = {Guillaume Lavoué and Florence Denis and Florent Dupont and Atilla Baskurt},
title = {A watermarking framework for subdivision surfaces},
booktitle = {in Proc. of LNCS, vol. 4195, Multimedia Content Representation, Classification and Security},
year = {},
pages = {223--231}
}
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Abstract
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. 1
Keyphrases
subdivision surface watermarking framework connectivity alteration watermarked surface new modulation scheme high robustness cover object subdivision control mesh spectral coefficient modulation spectral coefficient subdivided version coarse control mesh so-called synchronization algorithm robust watermarking scheme attacked version spectrum shape control polyhedron frequency domain decomposition
