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Printing Technique Classification for Document Counterfeit Detection

Christoph Lampert; Lin Mei; Thomas Breuel
In: Proceedings 2006 International Conference on Computational Intelligence and Security. International Conference on Computational Intelligence and Security (CIS-06), November 3-6, Ghuangzhou, China, ISBN 9781424406043, IEEE Computer Society, 2006.


The detection of counterfeit in printed documents is cur- rently based mainly on built-in security features or on hu- man expertise. We propose a classification system that sup- ports non-expert users to distinguish original documents from PC-made forgeries by analyzing the printing technique used. Each letter in a document is classified using a support vector machine that has been trained to distinguish laser from inkjet printouts. A color coded visualization helps the user to interpret the per-letter classification results.