Figure-based writer verification by matching between an arbitrary part of registered sequence and an input sequence extracted from on-line handwritten figures

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This paper propose a method of writer verification basedon on-line features extracted from a process of drawing afigure, and evaluate its performance on handdrawn figuresby genuine writers and pretenders. In the proposed method,a person in registration writes only the reference figure,which is composed of as many parts as possible and theperson can be verified with a arbitrary part of the referencefigure. The verification is based on a spotting methodcalled CDP (Continuous Dynamic Programming). Fromsome requirements in authentication system, the proposedmethod is tested through some experiments using figures.The error rates in the experiment were different dependingon conditions such as kind of on-line features, minimumnumber of strokes comprised in acceptable test sequence asinput, figure for determination of threshold and the genuinewriter. The result of the experiment shows that the proposedmethod is effective.

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