Drone-based digital terrain model for the classification of karst topography texture

Abstract EN

Karst topography is represented in high spatial resolution digital surface models based on drones photogrammetry and Geographic Information Systems (GIS) methods to effectively describe, evaluate and quantify karst topography texture.

The purpose of this paper is to delineate and qualified karst topography roughness zones in Jaj region of Lebanon.

The selected parameters such as Topographic Roughness Index (TRI), Fractal dimensions and Wombling method are combined and classified to form a karst topography zoning map.

The similarity of these parameters is tested in a correlation analysis; then combine together to forms the karst topography texture map.

Besides orthoimages and site visits for the validation of the resulted map, a comparison with the generated Iwahashi and Pike landform classification raster prove the delineation in four karst zones: slight, moderate, high and very high textures.