Intelligent identification and orientation information extraction of rock slope discontinuities from point cloud data based on LEKM-PointNet++ - Danni Zhao; Kun Li; Zixuan Zhang; Jiangbo Xu; Shengwen Qi; Peng Sha; Shaowei Wang; Guangming Luo; Bowen Zheng; Xiaolin Weng; Yalin Nan; Nengyuan Chen (Transportation Geotechnics, 2026)