1. Chongqing Key Laboratory on Big Data for Bio Intelligence, Chongqing University of Posts and Telecommunications, Chongqing, China
2. Department of Computer Science, University of Central Arkansas, Conway, AR, USA
3. Chongqing Key Laboratory of Image Cognition, Chongqing University of Posts and Telecommunications, Chongqing, China
4. School of Information and Communication Engineering, Chongqing University of Posts and Telecommunications, Chongqing, China
5. School of Computer Science and Informatics, De Montfort University, Leicester, U.K.
6. Laboratoire des Signaux et Systèmes, CNRSCentraleSupelec-Université Paris-Sud, Gif-sur-Yvette, France
7. School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu, China