7.3 Processing Technique Examples

The following section is concerned with simple image processing techniques that can be done in order to allow a pair of images, which are not viewable in the raw image format, to be seen in stereo. Simple techniques such as resizing the images, allow us to print the images at the same approximate scale thus eliminating Y parallax. More complex techniques such as the slant range to ground range correction allow scale differences due to the slant range projection to be eliminated. A simple rotation allows the viewing of a stereo pair without having to rotate the images manually. Applying an antenna pattern correction allows the removal of the interfering effect of the antenna pattern. Finally, applying a filter to data allows some of the speckle in a image pair to be removed thereby increasing stereoviewability.

Image processing techniques involve resampling and/or radiometric transformation of the raw image. In order that too much information is not lost these techniques should be applied only when necessary.