Human Action Recognition Using Time Delay Input Radial Basis Function Networks

Davood Kalhor (University of Malaya, Malaysia); Ishak Bin Aris (Universiti Putra Malaysia Selangor, Malaysia); Izhal Abdul Halin (Universiti Putra Malaysia, Malaysia); Trifa Moaini (Shahid RajaeeTeacher Training University, Iran)

This paper presents a fast approach to represent and recognize human actions. For representation, a feature vector is constructed from spatiotemporal data of silhouettes based on appearance and motion. For classification, a new Radial Basis Function Network (RBF), called Time Delay Input Radial Basis Function Network is proposed by introducing time delay units to the RBF in a novel approach. The proposed network has a few desirable features such as easier learning process and more flexibility. The representational power and speed of the proposed method for action recognition were evaluated using a publicly available dataset. Based on experimental results, implemented in MATLAB and on standard PCs, the average time for constructing a feature vector for a high-resolution video is almost 20 ms/frame. Furthermore, the proposed approach demonstrates good performance in terms of execution time and overall performance (a new performance measure that combines accuracy and speed into one metric).

Journal: International Journal of Simulation- Systems, Science and Technology- IJSSST V15

Published: Jun 30, 2014

DOI: 10.5013/IJSSST.a.15.03.07