Journal
COMPUTERS & ELECTRICAL ENGINEERING
Volume 57, Issue -, Pages 1-14Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compeleceng.2016.11.010
Keywords
In-air signature; Signature verification; Video-based tracking; Dynamic time warping; Fast Fourier Transform
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Funding
- National Natural Science Foundation of China [61573151, 61105019, 61503141]
- Guangdong Natural Science Foundation [2016A030313468]
- Featured Innovation Project in Colleges and Universities of Guangdong Province [2015KTSCX007]
- Science and Technology Program of Guangzhou [201510010088]
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At present, the common online signature verification systems adopt the contacted model of signing on a tablet or a phone screen, which have a great dependence on the device. Considering that the development of biometrics tends to the long distance and non-contact mode, a novel video-based system for in-air signature verification is proposed. First, the fingertip tracking is used for generating unique signature trajectory from the in-air signing videos. In combination of contrapuntally improved dynamic time warping (DTW) method, the Fast Fourier Transform (FFT) and the analysis on the signature length, a Gaussian distribution-based fusion algorithm is proposed for in-air signature verification. Finally, comprehensive experiments are conducted on a self-built database consisting of 560 signatures, then a false rejection rate (FRR) of 2.86% and a false acceptance rate (FAR) of 1.90% are achieved with an average matching time of only 24 ms, which have demonstrated the effectiveness of our proposed system. (C) 2016 Elsevier Ltd. All rights reserved.
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