LIS Terrain Analysis - digital terrain analysis
The package contains tools to derive terrain breaklines and to calculate surface roughness and local morphometry features like slope, aspect, curvature and shadings from point clouds. Applications are digital terrain analysis and mapping products.
Tool: Fill Sinks [interactive]
| Features |
|---|
| • filling of local sinks in raster data sets up to the elevation of the location clicked with the mouse |
| • undo possibility |
| Application |
|---|
| • sink filling |
| • volume calculations |
| • manual raster data set editing |
Tool: Local Morphometry (PC)
| Features |
|---|
| • derivation of local morphometric features from point clouds |
| • methods: local plane fitting or meshing |
| • morphometric features: slope, aspect, curvature, shading |
| Application |
|---|
| • digital terrain analysis |
| • visualization products |
Tool: Rock Shadings
| Features |
|---|
| • calculation of rock shadings by multidirectional terrain illumination |
| • user defined number of azimuth directions |
| • masking by slope threshold, optional |
| Application |
|---|
| • visualization products |
| • cartographic map layers |
Tool: Surface Roughness (PC)
| Features |
|---|
| • calculation of surface roughness from point clouds |
| • least-squares plane fitting |
| • scale can be controlled by search radius |
| • measures: minimum/maximum distance to plane, distance of search point to plane, deviation of all points to the plane, standard deviation |
| Application |
|---|
| • digital terrain analysis |
| • estimation of surface roughness |
| • statistical analysis, e.g. level of detection |
| • rockfall modelling |
Tool: Surface Roughness Grid (PC)
| Features |
|---|
| • calculation of surface roughness from point clouds |
| • analysis of user-defined point cloud attribute |
| • range-filtering of input values, optional |
| • least-squares plane fitting |
| • scale is controlled by grid cell size |
| • measures: minimum/maximum distance to plane, mean distance to plane, mean of unsigned distance to plane, standard deviation |
| Application |
|---|
| • digital terrain analysis |
| • estimation of surface roughness |
| • statistical analysis, e.g. level of detection |
| • rockfall modelling |
Tool: Terrain Breaklines
| Features |
|---|
| • derivation of 3D terrain breaklines from DTMs |
| • user-defined analysis scale |
| • curvature threshold |
| • line smoothing, optional |
| • output: 3D line shapefile, labels for concave/convex breaklines |
| Application |
|---|
| • digital terrain analysis |
| • terrain breaklines |