A multilevel paradigm for deep convolutional neural network features selection with an application to human gait recognition

Human gait recognition (HGR) shows high importance in the area of video surveillance due to remote access and security threats. HGR is a technique commonly used for the identification of human style in daily life. However, many typical situations like change of clothes condition and variation in view angles degrade the system performance. Lately, different machine learning (ML) techniques have been introduced for video surveillance which gives promising results among which deep learning (DL) shows best performance in complex scenarios. In this article, an integrated framework is proposed for HGR using deep neural network and Fuzzy Entropy controlled Skewness (FEcS) approach. The proposed technique works in two phases: In the first phase, Deep Convolutional Neural Network (DCNN) features are extracted by pre-trained CNN models (VGG19 and AlexNet) and their information is mixed by parallel fusion approach. In the second phase, entropy and skewness vectors are calculated from fused feature vector (FV) to select best subsets of features by suggested FEcS approach. The best subsets of picked features are finally fed to multiple classifiers and finest one is chosen on the basis of accuracy value. The experiments were done on four well-known datasets namely AVAMVG gait, CASIA A, B and C. The achieved accuracy of each dataset was 99.8%, 99.7%, 93.3% and 92.2%, respectively. Therefore, the obtained overall recognition results lead to conclude that the proposed system is very promising.