Abstract
A Bayesian model for off-line signature verification involving the representation of a signature through its curvature is developed. The prior model makes use of a spatial point process for specifying the knots in an approximation restricted to a buffer region close to a template curvature, along with an independent time-warping mechanism. In this way, prior shape information about the signature can be built into the analysis. The observation model is based on additive white noise superimposed on the underlying curvature. The approach is implemented using Markov chain Monte Carlo and applied to a collection of documented instances of William Shakespeare's signature. © 2005 American Statistical Association.
| Original language | English |
|---|---|
| Pages (from-to) | 231-241 |
| Journal | Journal of the American Statistical Association |
| Volume | 100 |
| Issue number | 469 |
| DOIs | |
| Publication status | Published - Mar 2005 |
| Externally published | Yes |
Bibliographical note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].Research Keywords
- Bayesian nonparametric regression
- Biometric identification
- Functional data analysis
- Shape theory
- Spatial point processes
- Time warping
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