3.3.3. Performance characteristics
Fig. 10 is a color picture of pieces of honeydew and cantaloupe
melon flesh on an HDPE cutting board. Fig. 11 shows images of the
melon pieces at 475, 520, and 675 nm with the ambient fluorescent
lights either on or off. Fig. 12 shows the melon spectra. The imaging
data were acquired using the ‘‘Hyper Differ.’’ icon (Fig. 4) with the
hardware gain set to zero across wavelengths. The time to
acquire a single hyperspectral data cube is about 11 s. The time toacquire two data cubes, with and without LED illumination, and to
calculate and display difference images is about 24 s plus any added
display time for difference images.