1. The National Key Laboratory of Fundamental Science on Synthetic Vision Sichuan University Chengdu Sichuan China
2. Neijiang Vocational&Technical College Neijiang Sichuan China
3. The College of Computer Science Sichuan University Chengdu Sichuan China
4. The School of Aeronautics and Astronautics Sichuan University Chengdu Sichuan China