Optimizing Rice Field Mapping in the Northern Region of China: An Asynchronous Flooding Signal and Object-Based Method. - Long Li 014; Daoqin Zhou; Kai Liu 006; Tian Shi; Chou Xie; Shudong Wang; Hang Li; Guannan Dong; Xueke Li (IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2024)