With the Epipolar Stereo Pair operation, you will create a stereo pair from two scanned aerial photographs with overlap.
In short, the process is as follows:
- Specify the left input map and the right input map; one of the maps may already have a georeference.
- Specify the output name of the stereo pair that will be created.
Then, in the Epipolar Stereo Pair - Creation window:
- Mark on each photograph two, three, or four fiducial marks.
- Mark the calculated principal point of the left photograph, on the right photograph (transferred principal point).
- Mark the principal point of the right photograph, on the left photograph (transferred principal point).
- In case of large scale differences between the two input maps, specify one or two scaling points in both photographs.
When you close the Epipolar Stereo Pair - Creation window, both input photographs will be resampled to output maps, i.e. the stereo pair is calculated. Rotation differences and possible scale differences between the photographs will be removed.
A calculated stereo pair can be viewed:
- in a stereoscope window, while using a stereoscope, and
- as an anaglyph in a map window, while using red-green or red-blue glasses.