convert an 8-bit image in an HDF file to a 24-bit image in another
hdf8to24 converts an 8-bit image in an HDF file into a 24-bit image in an
other HDF file.
set scale for magnifying the 8-bit input file.
scales between 0 and 1 shrink the image, scales
greater than 1 expand the image. Defaults to 1
use JPEG compression to store the 24-bit image
Defaults to no compression, or quality level
75, if no quality is specified.