This program serves to calibrate most images from the Clementine Hires
camera. It does so through the use of some constants based on offset and
flat images based on filter type. There are six possible offsets, with the
resultant change being anywhere between eight and fifty to the DN. There
are four flat images, one for each of the four possible filters.
Information for this program came from JGR Vol 108, A radiometric
calibration for the Clementine Hires camera: Robinson, Malaret, White.
The original paper can be found at https://doi.org/10.1029/2000JE001241
The equation for the A filter yields k values that are identical to those
in Table 5 from Robinson et al. (2003), therefore the pixel values in the
output image are the same as they would be if the k values from Table 5
were hard coded into the script.
The equation for the D filter yields k values that differ from the
hard-coded values by less than 1 standard deviation as reported in Table 6
of Robinson et al. (2003). The radiance values that result from the
computed k values differ by no more than .0583% of the radiance values
computed from the k values published in Table 6.
This parameter is used to choose either a user entered K value or a
previously set, calculated K value.
Compute a K value from MCP gain mode
This option has the program use a known K value depending on the
MCP gain and filter type, very few MCP gain mode IDs are
supported. The K value is the absolute coefficient per wavelength
and MCP gain state.
User input K value
User chooses a K value and enters it into the system. This is more
likely as very few MCP gain modes are supported.