![]() You can control the 3D cursor using the specific mouse and keyboard controls shown in the following table: The cursor in the Image window view is now a double red and blue cursor which, when viewed using anaglyph glasses, merges into a single cursor. The epipolar stereo image opens in a new display group, with the left epipolar image as the red band, and the right epipolar image as the blue band. Select the right epipolar image from the Select Input Band list, or by opening an epipolar image file using the Open drop-down button and selecting the file.In the Select Right Epipolar Image dialog:.The Select Right Epipolar Image dialog opens. Select the left epipolar image from the Select Input Band list, or by opening an epipolar image file using the Open drop-down button and selecting the file.In the Select Left Epipolar Image dialog:.The Select Left Epipolar Image file selection dialog opens. From the Toolbox, select Terrain > DEM Extraction > Epipolar 3D Cursor.To use this tool, you need an existing epipolar stereo pair. Note: The epipolar stereo image pair can be created using the DEM Extraction Wizard (see Generate Epipolar Images) or by selecting Terrain > DEM Extraction> Build Epipolar Images from the Toolbox (see Build Epipolar Images).Ĭurrently, the Epipolar 3D Cursor tool works with any stereo image pairs that have rational polynomial coefficient (RPC) data, either included in the original file or calculated by ENVI. Elevation data obtained this way can be exported to an ASCII file, ENVI vector file (EVF), or ArcView 3D shapefile. You can view an anaglyph of epipolar stereo imagery and adjust the apparent height of the cursor to extract elevation data. The Epipolar 3D Cursor tool allows you to perform 3D measurements in a 3D stereo viewing environment based on an existing epipolar stereo pair of images. ![]()
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