A Rapid and High-Precision Mountain Vertex Extraction Method Based on Hotspot Analysis Clustering and Improved Eight-Connected Extraction Algorithms for Digital Elevation Models. - Zhenqi Zheng; Xiongwu Xiao; Zhi-Chao Zhong; Yufu Zang; Nan Yang 004; Jianguang Tu; Deren Li (Remote. Sens., 2021)