1. College of Computer, National University of Defense Technology, Changsha 410073, People's Republic of China
2. School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, People's Republic of China
3. College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, People's Republic of China
4. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology, Chengdu 610054, People's Republic of China
5. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, People's Republic of China