Abstract
Stamps, along with signatures, can be considered as the most widely used extrinsic security feature in paper documents. In contrast to signatures, however, for stamps little work has been done to automatically verify their authenticity. In this paper, an approach for verification of color stamps is presented. We focus on photocopied stamps as non-genuine stamps. Our previously presented stamp detection method is improved and extended to verify that the stamp is genuine and not a copy. Using a variety of features, a classifier is trained that allows successful separation between genuine stamps and copied stamps. Sensitivity and specificity of up to \(95\,\%\) could be obtained on a data set that is publicly available.
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Notes
- 1.
The data set is available at http://madm.dfki.de/downloads-ds-staver.
- 2.
This project was partially funded by the Rheinland-Palatinate Foundation for Innovation, project AnDruDok (961-38 6261 / 1039).
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Micenková, B., van Beusekom, J., Shafait, F. (2015). Stamp Verification for Automated Document Authentication. In: Garain, U., Shafait, F. (eds) Computational Forensics. IWCF IWCF 2012 2014. Lecture Notes in Computer Science(), vol 8915. Springer, Cham. https://doi.org/10.1007/978-3-319-20125-2_11
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