Manuscript received February 1, 2019; revised March 31, 2019; accepted April 9, 2019. Date of publication April 16, 2019; date of current version July 31, 2019. This work was supported in part by the National Natural Science Foundation of China under Grant 61309027, Grant 617725534, and Grant 61728108, in part by the Hunan Provincial Natural Science Foundation of China under Grant 2018JJ3888, in part by the Scientific Research Fund of Hunan Provincial Education Department under Grant 18B197, in part by the National Key Research and Development Program of China under Grant2018YFB1700200, in part by the Open Research Project of Key Laboratory of Intelligent Information Perception and Processing Technology (Hunan Province) under Grant 2017KF01, and in part by the Foundation Project of Hunan Internet of Things Society under Grant 2018-2. (Corresponding author: Zhufang Kuang.) Z. Kuang is with the School of Computer and Information Engineering, Central South University of Forestry and Technology, Changsha 410004, China, and also with the Key Laboratory of Intelligent Information Perception and Processing Technology (Hunan Province), Zhuzhou 412008, China (e-mail: zfkuangcn@163.com).
