Hi all,
I don't ask of the basic meaning of the histogram. My question is more
technical and it divides into sub questions:
* What is the data basis of the histogram? The whole pixel data of the
image or a downsampled representation?
* When in the pipeline is the histogram produced? How does it belong to
the exported image?
* What is the colour space used for the histogram? The output colour
space?
* What range does the x axis cover? Does it belong to the 8 bit range
of the rendered monitor output? And if yes, how would it belong to
the exported image's colour space, especially if it is
bounded/unbounded?
Unfortunately, the manual
(https://www.darktable.org/usermanual/ch03s03s06.html.php) is not very
verbose regarding this topic. There is some information on the mailing
list, but it's more than three years old and not comprehensive as well.
Could you give me a hint, please?
Thanks & best regards
Chris
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