[Liu, Hui;Xu, Jiangqiao;Wang, Xiaoping;Zeng, Zhigang] Huazhong Univ Sci & Technol, Sch Artificial Intelligence & Automat, Wuhan 430074, Peoples R China.^[Liu, Hui;Xu, Jiangqiao;Wang, Xiaoping;Zeng, Zhigang] Huazhong Univ Sci & Technol, Key Lab Image Proc & Intelligent Control, Educ Minist China, Wuhan 430074, Peoples R China.^[Li, Zengyang] Cent China Normal Univ, Sch Comp Sci, Wuhan 430079, Peoples R China.^[Lu, Jinhu] Beihang Univ, State Key Lab Software Dev Environm, Sch Automat Sci & Elect Engn, Beijing 100191, Peoples R China.^[Lu, Jinhu] Beihang Univ, Beijing Adv Innovat Ctr Big Data & Brain Comp, Beijing 100191, Peoples R China.