An Application of the 2D Gaussian Filter for Enhancing Feature Extraction in Off-line Signature Verification
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Blumenstein, Michael
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Kaizhu Huang, Di Wen
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Beijing, China
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Abstract
Abstract-Similar to many other pattern recognition problems, feature extraction contributes significantly to the overall performance of an off-line signature verification system. To be successful, a feature extraction technique must be tolerant to different types of variation whilst preserving essential information of input patterns. In this paper, we describe a grid-based feature extraction technique that utilises directional information extracted from the signature contour, i.e. the chain code histogram. Our experimental results for signature verification indicated that, by applying a suitable 2D Gaussian filter on the matrices containing the chain code histograms, an average error rate (AER) of 13.90% can be obtained whilst maintaining the false acceptance rate (FAR) for random forgeries as low as 0.02%. These figures are comparable or better than those reported by other state of the art feature extraction techniques such as the Modified Direction Feature (MDF) and the Gradient feature.
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Proceedings of the 11th International Conference on Document Analysis and Recognition (ICDAR 2011)
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Image processing
Artificial intelligence not elsewhere classified