Terrain Generation
The need for highly accurate and current terrain files is critical when doing geospatial analysis. Terrain models help increase accuracy and can be used to create derivative products such as helicopter landing zones, slope maps, and line of sight analysis. SOCET GXP® has the ability to automatically generate digital terrain models from stereo imagery. The rigorous nature of SOCET GXP allows for these advanced algorithms to create precise models that reduce production and editing time and allow for the most accurate and recent 3D representation of a scene.

The terrain generation algorithms provide the ability to create both surface models as well as bare-earth terrain files as a grid or Triangular Irregular Network (TIN). An intuitive interface provides user friendly options for creating accurate, high resolution terrain models from a wide variety of image scene content. Output formats include, but are not limited to ASCII, DTED, GeoTIFF, NITF, and High Resolution Elevation (HRE).

SOCET GXP provides three different algorithms for terrain generation: Automatic Terrain Extraction (ATE), Next-Generation Automatic Terrain Extraction (NGATE), and Automatic Spatial Modeler (ASM).

Automatic Spatial Modeler (ASM)
ASM is the most recent terrain generation algorithm that utilizes Graphical Processing Units (GPUs) to generate terrain models that contain accurate building edges and corners. This algorithm also has the ability to generate point clouds from stereo images. For detailed information regarding ASM, click here.

Automatic Terrain Extraction (ATE)
This algorithm generates terrain models by doing image correlation on each post.

Next-Generation Automatic Terrain Extraction (NGATE)
This algorithm performs image correlation and edge-matching on each image pixel. NGATE tends to work better than ATE in difficult areas such as large-scale imagery in urban areas.