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A Two-Stage Method for Online Signature Verification Using Shape Contexts and Function Features.

Yu Jia1, Linlin Huang2, Houjin Chen3

  • 1School of Electronic and Information Engineering, Beijing Jiaotong University, No. 3 Shangyuancun Haidian District, Beijing 100044, China. 16120010@bjtu.edu.cn.

Sensors (Basel, Switzerland)
|April 25, 2019
PubMed
Summary
This summary is machine-generated.

This study introduces a novel two-stage method for accurate online signature verification using shape contexts and function features. The approach achieves a competitive 2.39% Equal Error Rate, enhancing identity verification security.

Keywords:
SC-DTWfunction featuresonline signature verificationshape contextssymbolic representationtwo-stage method

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Area of Science:

  • Computer Science
  • Biometrics
  • Pattern Recognition

Background:

  • Online signatures are crucial behavioral biometrics for identity verification.
  • Existing methods require enhanced accuracy and efficiency in signature verification.

Purpose of the Study:

  • To propose a novel two-stage strategy for accurate online signature verification.
  • To improve matching accuracy and efficiency using shape context-dynamic time warping (SC-DTW).

Main Methods:

  • Feature extraction using shape contexts and function features.
  • A two-stage classification strategy.
  • Shape context-dynamic time warping (SC-DTW) for signature matching.
  • Interval-valued symbolic representation for final classification.

Main Results:

  • The proposed method achieved an Equal Error Rate (EER) of 2.39% on the SVC2004 Task 2 dataset.
  • The SC-DTW approach demonstrated improved matching accuracy and efficiency.
  • The two-stage strategy proved effective in distinguishing genuine signatures.

Conclusions:

  • The presented method offers a competitive and effective solution for online signature verification.
  • The combination of shape contexts, function features, and SC-DTW enhances biometric security.
  • The study validates the proposed approach's effectiveness through rigorous experimentation.