Residual connection-based graph convolutional neural networks for gait recognition

The walking manner of a person, also known as gait, is a unique behavioral biometric trait. Existing methods for gait recognition predominantly utilize traditional machine learning. However, the performance of gait recognition can deteriorate under challenging conditions including environmental occlusion, bulky clothing, and different viewing angles. To provide an effective solution to gait recognition under these conditions, this paper proposes a novel deep learning architecture using Graph Convolutional Neural Network (GCNN) that incorporates residual connections for gait recognition from videos. The optimized feature map of the proposed GCNN architecture exhibits the invariant property to viewing angle and subject's clothing. The residual connection is used to capture both spatial and temporal features of a gait sequence. The kinematic dependency extracted from shallower network layer is propagated to deeper layer using residual connection-based GCNN architecture. The proposed method is validated on CASIA-B gait dataset and outperforms all recent state-of-the-art methods.