This paper presents a survey of off-line siwature verification. Off-line signature verification systems are widely used in many areas. The off-line signature features are classified. Many approaches of verification have been investigated. We will discuss these approaches respectively in details and make a comparison. Finally, we will propose some problems existed in the off-line signature verification system. A conclusion of all ithese works and an outlook into the future work will also be presented.
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Hou et al. (2005) studied this question.
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