基于精细DEM的同震滑坡隐患自动提取方法

An Automatic Extraction Method for Hidden Hazards of Co-seismic Landslides Based on Fine DEM

提出了一种地形形态特征约束的同震滑坡隐患自动提取方法,首先分析同震滑坡隐患在精细数字高程模型(digital elevation model,DEM)上的形态特征,然后建立同震滑坡隐患地形表征的定量描述方法,最后以形态学约束实现滑坡隐患区的自动圈定。以九寨沟典型同震滑坡进行方法试验,试验结果验证了所提方法的有效性。

This paper proposes an automatic extraction method of co-seismic landslide hidden dangers based on the constraint of topographical morphological features.Firstly,we analyze the morphological features of co-seismic landslides hidden danger in the fine DEM,then establish the quantitative description method of landslides hidden danger terrain feature,Finally,the landslide hidden danger areas are automatic extracted based on the morphological constraints.The test results in the typical co-seismic landslide in Jiuzhaigou verify the effectiveness of the method.