TECHNOLOGY FOR ASSESSING THE ACCURACY OF THE DIGITAL ELEVATION MODEL (DEM) OF LANDSLIDE-PRONE SLOPES BASED ON HIGH-LEVEL SYNTHESIS (HLS) DATA

Abstract

This paper presents the main provisions for using digital elevation models (DEMs) derived from1:2000 scale digital topographic maps and airborne laser scanning (ALS) data for the purpose of zoning landslide-prone areas. The primary focus of the study was to determine a sufficient density of laser reflection points to be used to create a digital elevation model of landslide-prone slopes. This procedure is necessary to automate the process of creating a digital terrain model from a cloud of airborne laser scanning points and does not requiread ditional control of the created model in feature areas. This reduces the cost of creating digital terrain models in landslide-prone areas without compromising model quality and reliability.