1. College of Electronic Engineering (College of Artificial Intelligence), South China Agricultural University, Guangzhou 510642, China
2. National Citrus Industry Technical System Machinery Research Office, Guangzhou 510642, China
3. Guangdong Provincial Agricultural Information Monitoring Engineering Technology Research Center, Guangzhou 510642, China
4. Key Laboratory of Smart Agricultural Technology in Tropical South China, Ministry of Agriculture and Rural Affairs, Guangzhou 510642, China