|Digital watermarks are an increasingly important and
efficient technique to mark intellectual property
by hidden, non-interfering information which is difficult to remove and difficult to detect without
specific knowledge, such as encoder keys.
We have developed the first mechanism to robustly encode hidden information, such as copyright notes, in 3D chemical structure data sets. The information is encoded as minimal, pseudo-random distortions of the original 3D atomic coordinates. For typical encoder damping factors, the atom displacement is so small that the energy of the structure is changed only negligibly (about 0.05%).
We propose to use similar techniques to protect intellectual property rights in scientific datasets, for example to prevent misappropriations such as the US$199 Pharma-CD, which is essentially an unauthorized rip-off of the free and publicly accessible NCI anti-tumor screening database.
The core watermarking algorithm was developed by Joachim Eggers. His homepage can be found here. The procedure is described in: J. J. Eggers, W.-D. Ihlenfeldt and B. Girod, Digital Watermarking of Chemical Structure Sets, 4th Information Hiding Workshop, Pittsburgh, PA, USA, 25-27 April, 2001.
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|This service can be used free of charge by anybody. However, we log the submitted structures
and reserve the right to use them for analysis of algorithm performance and potential problems, and to publish results,
including the exact formula of processed structures and their origin.
Please do not submit any confidential structures.
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In-house versions of this software are available for licensing.