Probabilistic gait modelling and recognition

Abstract

Biometric researchers have recently found considerable applicability of gait recognition in visual surveillance systems. This study proposes a probabilistic framework for gait modelling that is applied to gait recognition. The basic idea of this framework is to consider the silhouette shape as a multivariate random variable and model it in a full probabilistic framework. The Bernoulli mixture model is employed to model silhouette distribution and recursive algorithms are provided for silhouette image and sequence classification. Finally, the proposed probabilistic method is applied to benchmark databases and its validity is demonstrated through experiments.

Keywords

• probabilistic gait modelling
• gait recognition
• visual surveillance systems
• multivariate random variable
• Bernoulli mixture model
• silhouette distribution model