that informal test results suggest that there is some leeway in the
selection of wavelengths used for detection.
The original software included an icon on the main screen that
allowed users to display images in real time that were created as a
function of registered images acquired at two different wave-
lengths. It soon became evident that the major time cost for these
operations was setting up the tripod and camera head. As the
incremental time for acquiring a complete hyperspectral data cube
was minimal, the two wavelength acquisition option was aban-
doned and the analyses routines were moved to a separate form
where acquired hyperspectral data could be accessed. When thesystem was used in actual processing plants ( Wiederoder et al., ac-cepted for publication), onsite analyses were generally restricted to
simple review of acquired images. In processing plants, the time
window between cleanup and the start of the next production cy-
cle is often less than 1 hour, and it was deemed more appropriate
to concentrate on image acquisition.