Development of Algorithms for the Extraction of Linear Patterns (Lineaments) from Airborne Laser Scanning Data

Abstract

The focus of this paper is the detection of surface discontinuities in laser scanning data. Lineaments represent linear surface structures like faults or fractures as well as geomorphologic features such as ridges or torrents. The detection and mapping of linear surface structures has high relevance in natural hazard assessment and spatial planning applications. In the surroundings of Innsbruck (Tyrol), lineaments were modelled by an algorithm especially developed for using laser scanning data. This algorithm detects areas with high surface curvature and linear slope discontinuities by applying geometric analysis and mathematical-statistical filters. The results are implemented into an information system for the management and analysis of laser scanning data.