A method is provided for enhancing two-dimensional contrast and range
images rendered from three-dimensional STIL data. A series of sequential
steps are provided for each of the rendered contrast image data and
rendered range image data. Briefly, the rendered contrast image data is
scaled based on a mean intensity value of all pixels of data therein,
stretched to a predetermined dynamic range, modified to compensate for
jitter and CCD array effects associated with the STIL camera system,
normalized using an exponential decay function that describes contrast
intensity roll-off associated therewith, and has a histogram clip routine
applied thereto. The rendered range image data is modified to compensate
for jitter effects associated with the STIL camera system, has background
portions of the resulting data modified to compensate for CCD array
effects and range intensity roll-off associated with the STIL camera
system, has a "salt and pepper" noise reduction routine applied thereto,
and has a histogram clip routine applied thereto.