针对图像采集分辨率的离线签名验证系统性能

Ninth International Conference on Document Analysis and Recognition (ICDAR 2007) Pub Date : 2007-09-23 DOI:10.1109/ICDAR.2007.4377032

J. Vargas-Bonilla, M. A. Ferrer-Ballester, C. Travieso-González, J. B. Alonso

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引用次数: 3

摘要

分析了改变图像分辨率对离线签名验证系统性能的影响。本文所分析的系统的几何特征是基于在极坐标和直角坐标下表示包络和内部行程分布的两个向量。图像分辨率从最初的600ppp分辨率逐渐降低到45ppp。利用隐马尔可夫模型验证了系统对随机伪造和简单伪造的鲁棒性。结果表明，150ppp在静态特征的性能和图像分辨率之间提供了一个很好的权衡。

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Off-line Signature Verification System Performance against Image Acquisition Resolution

The effect of changing the image resolution over an off-line signature verification system performance is analyzed. The geometrical features used for the system analyzed in this paper are based on two vectors which represent the envelope and the interior stroke distribution in polar and Cartesian coordinates. Image resolution is progressively diminished from an initial 600 ppp resolution till 45 ppp. The robustness of the analyzed system for random and simple forgeries is tested out with a hidden Markov model. The results show that 150 ppp offers a good trade-off between performance and image resolution for static features.

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Ninth International Conference on Document Analysis and Recognition (ICDAR 2007)

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