Center for Vision, Speech, and Signal Processing (CVSSP), Department of Electrical and Electronic Engineering, University of Surrey, Guildford GU2 7XH, UK
Xiaorong Ding
School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu 611731, China
Saeid Sanei
Department of Electrical and Electronic Engineering, Imperial College London, London SW7 2AZ, UK