dcod2lum man page
dcod2lum — Convert hardcopy characteristic curve file to softcopy format
dcod2lum in-file out-file
Command line program that converts a hardcopy characteristic curve file to softcopy format. In other words, the measured optical density (OD) values from the input file are transformed to the luminance space according to the formula:
L = La + L0 * 10^(-D)
where L is the resulting luminance, La is the reflected ambient light and L0 the illumination (both measured in cd/m^2), 'D' the optical density (OD). Please note that if no illumination value is specified in the input file (keyword lum) all optical density values are mapped to a constant luminance.
in-file hardcopy characteristic curve file to be converted out-file softcopy characteristic curve file to be written
The format of both input and output file is described the documentation of the dcmdspfn command line tool. In addition, the data folder contains sample characteristics file monitors, cameras, printers and scanners.
<datadir>/camera.lut - sample characteristics file of a camera
<datadir>/monitor.lut - sample characteristics file of a monitor
<datadir>/printer.lut - sample characteristics file of a printer
<datadir>/scanner.lut - sample characteristics file of a scanner
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