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Proceedings Paper

Robust watermarking based on the warping of predefined triangular patterns
Author(s): Patrick Bas; Jean-Marc Chassery; Benoit M. M. Macq
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Paper Abstract

Numerical information is volatile and watermarking is a solution to assist copyright protection. During the detection step, the synchronization of the mark is a great problem. Geometric transformations can defeat the detector of the mark by desynchronizing the mark. Our scheme is based on warping of pre-defined triangular patterns. The content of the image (feature points) is used to mark independently different regions. This allows the synchronization of the mark for the detection step. Feature points mixed with a Delaunay tessellation permits to mark each triangle of the image. The detection is performed by warping triangle to a reference pattern and correlating with a reference triangle. Different algorithms have been developed in the spatial domain and in the frequential (DCT) domain. Our results show that our schemes are robust to Stirmark and other geometric transformations on different categories of images.

Paper Details

Date Published: 9 May 2000
PDF: 11 pages
Proc. SPIE 3971, Security and Watermarking of Multimedia Contents II, (9 May 2000); doi: 10.1117/12.385013
Show Author Affiliations
Patrick Bas, Lab. des Images et des Signaux (France)
Jean-Marc Chassery, Lab. des Images et des Signaux (France)
Benoit M. M. Macq, Univ. Catholique de Louvain (Belgium)

Published in SPIE Proceedings Vol. 3971:
Security and Watermarking of Multimedia Contents II
Ping Wah Wong; Edward J. Delp III, Editor(s)

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