Use the DEM Extraction Wizard to extract a DEM. The Wizard allows you to step forward and backward, and to save the workflow at any step so that you can continue at a later time. The functions provided in the Wizard steps are also available to run separately from the Wizard using the Terrain > DEM Extraction Wizard option in the Toolbox. The Wizard workflow is illustrated in the figure below. For details on the steps in the Wizard, see the following topics:

• Select the Stereo Image Pair
• Select Ground Control Points
• View, Add, and Edit GCPs
• Collect Tie Points
• View, Add, and Edit Tie Points
• Generate Epipolar Images
• Set Output DEM Projection
• Select DEM Extraction Parameters
• Examine the DEM Result

These workflow steps are described in more detail in the following sections.