School of Information Science and Engineering, Central South University, ChangSha, 410083, China School of Computer and Information Engineering, Henan University, KaiFeng 475001, China.|School of Information Science and Engineering, Central South University, ChangSha, 410083, China.|School of Information Science and Engineering, Central South University, ChangSha, 410083, China.|School of Information Science and Engineering, Central South University, ChangSha, 410083, China.|School of Information Science and Engineering, Central South University, ChangSha, 410083, China.|Division of Biomedical Engineering, University of Saskatchewan, Saskatchewan S7N 5A9, Canada.|Department of Computer Science, Georgia State University, Atlanta, GA 30302-3994, USA.