Gait Recognition Using Procrustes Shape Analysis and Shape Context

This paper proposes a novel algorithm for individual recognition by gait. The method of Procrustes shape analysis is used to produce Procrustes Mean Shape (PMS) as a compressed representation of gait sequence. PMS is adopted as the gait signature in this paper. Instead of using the Procrustes mean shape distance as a similarity measure, we introduce shape context descriptor to measure the similarity between two PMSs. Shape context describes a distribution of all boundary points on a shape with respect to any single boundary point by a histogram of log-polar plot, and offers us a global discriminative characterization of the shape. Standard pattern recognition techniques are used to classify different patterns. The experiments on CASIA Gait Database demonstrate that the proposed method outperforms other algorithms in both classification performance and verification performance.