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Video-based signature verification and pen-grasping posture analysis for user-dependent identification authentication

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4 Author(s)
H. -Y. Cheng ; Department of Computer Science and Information Engineering, National Central University, Chung-Li, Taiwan ; C. -L. Lin ; C. -C. Yu ; V. Gau

This article proposes a video-based identification authentication framework via signature verification and pen-grasping posture analysis. The authors consider the case of using a camera instead of a pressure-sensitive tablet to acquire signatures. The proposed reliable verification method is useful when pressure-sensitive digitising tablets are not available. In addition, the authors can acquire more information in addition to the trajectories of the signature in video-based handwritten signature verification. The entire writing process and the pen-grasping posture are personalised features that cannot be easily imitated and forged. The authors analyse the signature trajectories using curvelets and the pen-grasping posture using modified motion energy images to perform user-dependent identification authentication. The proposed system is able to achieve both low false-rejection rates and low false-acceptance rates for database containing both unskilled and skilled imitation signatures.

Published in:

IET Computer Vision  (Volume:6 ,  Issue: 5 )