I have an unbranded color checker that looks similar to the SpyderChecker 24 available in darktable. For this unbranded color checker, I have data for the patches, including Lab values and RGB values. Can I add these values to darktable and create my own custom chart?
You can‘t do it with a distributed package, but if you can build your own package you can add the values in /src/common/colorchecker.h and /src/iop/channelmixerrgb.c
Since the values of such color checkers aren‘t lot independent they won’t be supported by the developers.
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