Analyzing maize stem circumference, stem height, and stem circumference-to-height ratio using UAV, UGV, and deep learning. - Jianing Shen; Jibo Yue; Yang Liu 251; Yihan Yao; Haikuan Feng; Hao Yang 009; Wei Guo 029; Xinming Ma; Yuanyuan Fu; Meiyan Shu; Guijun Yang; Hongbo Qiao (Comput. Electron. Agric., 2025)