digital elevation model


GIS Data

Structure-from-Motion (SfM). Instead of a single stereo pair, the SfM technique requires multiple, overlapping photographs as input to feature extraction and 3-D reconstruction algorithms. From: Westoby et al., 2012.Structure-from-Motion (SfM). Instead of a single stereo pair, the SfM technique requires multiple, overlapping photographs as input to feature extraction and 3-D reconstruction algorithms. From: Westoby et al., 2012.

Making 3D Models with Photogrammetry

With the prevalence of smartphones and drones, photogrammetry is now widely present as an effective and cost-efficient method to easily recreate 3D models of large areas and specific objects or buildings.

GIS Data

Updated 3D Global Topo Data from NASA

Updated 3D Global Topo Data from NASA

Based on measurements from NASA’s Terra spacecraft, a new 3D topographic map has been released as a joint effort by NASA and Japan.  The digital elevation model (DEM) was developed from imagery obtained from the Japanese Advanced Spaceborne Thermal Emission and Reflection Radiometer, or ASTER, instrument aboard Terra.  ASTER is one of five […]