Associated Spatio-Temporal Capsule Network for Gait Recognition
This work aims to improve person identification through gait patterns, which is a problem for security and biometric applications, by leveraging multi-modality data, representing an incremental improvement over existing single-modality approaches.
This paper addresses the challenge of gait recognition by proposing an associated spatio-temporal capsule network (ASTCapsNet) that processes multi-sensor data. The system extracts spatio-temporal features using novel recurrent memory and relationship layers, followed by a Bayesian model for classification. Experiments on public datasets demonstrate its effectiveness against state-of-the-art methods.
It is a challenging task to identify a person based on her/his gait patterns. State-of-the-art approaches rely on the analysis of temporal or spatial characteristics of gait, and gait recognition is usually performed on single modality data (such as images, skeleton joint coordinates, or force signals). Evidence has shown that using multi-modality data is more conducive to gait research. Therefore, we here establish an automated learning system, with an associated spatio-temporal capsule network (ASTCapsNet) trained on multi-sensor datasets, to analyze multimodal information for gait recognition. Specifically, we first design a low-level feature extractor and a high-level feature extractor for spatio-temporal feature extraction of gait with a novel recurrent memory unit and a relationship layer. Subsequently, a Bayesian model is employed for the decision-making of class labels. Extensive experiments on several public datasets (normal and abnormal gait) validate the effectiveness of the proposed ASTCapsNet, compared against several state-of-the-art methods.