1. Beijing Institute of Technology, School of Software Engineering, Key Laboratory of Digital Performance and Simulation Technology, No. 5, South Zhongguancun Street, Haidian District, Beijing 100081, China
2. Beijing Institute of Technology, School of Optoelectronics, Key Laboratory of Photoelectronic Imaging Technology and System, Ministry of Education of China, No. 5, South Zhongguancun Street, Haidian District, Beijing 100081, China