Journal of Biometrics & Biostatistics

Tom Chau

Publications

• Research Article
  Grip Kinetic Profile Variability in Adult Signature Writing
  Author(s): Bassma Ghali, Khondaker Mamun and Tom ChauBassma Ghali, Khondaker Mamun and Tom Chau
  
  Previous studies of handwriting grip kinetics have demonstrated the ability to classify writers based on the topography of grip forces associated with signature writing. However, the topographic representation requires a large array of individual sensors in practice. The possibility of differentiating participants on the basis of a summative, temporal force profile is yet unknown. In this study, we investigated the variability of features derived from a time-evolving total grip force profile. Using an instrumented writing utensil, twenty adult participants provided 600 samples of a well-practised bogus signature over a period of 10 days. Deploying a combination of temporal, spectral and information-theoretic features, a linear discriminant analysis classifier outperformed nonparametric and nonlinear classifier alternatives and discriminated among participants with an average misclassi.. Read More»
  DOI: 10.4172/2155-6180.1000174

  Abstract PDF