This section describes the processes involved with DEM extraction, which you can run individually from the Terrain > DEM Extraction menu option in the Toolbox. Running these steps independently provides an alternative to using the DEM Extraction Wizard (for example, you may only be interested in building epipolar images without collecting GCPs). Although the underlying processes are the same between the individual menu options and the DEM Extraction Wizard, the dialogs and steps are slightly different.

See the following sections:

• Select Stereo GCPs
• Select Stereo Tie Points
• Build Epipolar Images
• Extract a DEM