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The performance of position, velocity, and acceleration signals for automatic signature verification is compared. Three types of signal comparison algorithms (dynamic time warping, regional correlation and tree matching) are used on a single database. Variance analysis shows that significant differences exist among the three signal representation spaces. Among other things, it is shown that the most discriminant are signals which reflect the vertical activity of the signing process and that the best representation space for a 2-D signature verification system is the velocity domain.>
Plamondon et al. (Mon,) studied this question.
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