Ergodic HMM-UBM System for On-Line Signature Verification

@inproceedings{ArgonesRa2009ErgodicHS,
  title={Ergodic HMM-UBM System for On-Line Signature Verification},
  author={Enrique Argones-R{\'u}a and David P{\'e}rez-Pi{\~n}ar L{\'o}pez and Jos{\'e} Luis Alba-Castro},
  booktitle={COST 2101/2102 Conference},
  year={2009}
}
We propose a novel approach for on-line signature verification based on building HMM user models by adapting an ergodic Universal Background Model (UBM). State initialization of this UBM is driven by a dynamic signature feature. This approach inherits the properties of the GMM-UBM mechanism, such as minimizing overfitting due to scarcity of user training data and allowing a world-model type of likelihood normalization. This system is experimentally compared to a baseline state-of-the-art HMM… CONTINUE READING

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