NCSU GeoForAll Lab
NCSU OSGeo Research and Education Laboratory

Terrain dynamics analysis using voxel models and lidar data time series

We use space-time cube approach to analyze how terrain evolves. By stacking a time series of digital elevation models, we create an elevation voxel model, which can be then visualized by isosurfaces. Elevation isosurface is a 3D analog of a contour, thus it represents the change of a particular contour line in time.
Jockey's Ridge State Park: evolving 16 m contour as an isosurface colored by year