1. School of Mechatronic Engineering and Automation, Shanghai Key Laboratory of Intelligent Manufacturing and Robotics, Shanghai University, Shanghai 200072, China
2. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130025, China
3. College of Agricultural Unmanned System, China Agricultural University, Beijing 100193, China
4. College of Science, China Agricultural University, Beijing 100193, China
5. Shanghai Tenghao Vision Technology Limited Company, Shanghai 201107, China