1. College of Optoelectronic Engineering, Chongqing Municipal Level Key Laboratory of Photoelectronic Information Sensing and Transmitting Technology, Chongqing University of Posts and Telecommunications, Chongqing, China
2. Research Center of Intelligent Equipment, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
3. Ministry of Agriculture and Rural Affairs, Key Laboratory of Agricultural Sensors, Beijing, China
4. Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Hubei, China