[EN] experimental feature : color mapping between images (exposure and color calibration)

This is the documentation to help beta-testers to try a new color mapping feature, that should be available for darktable 4.0 in July 2022. For the rest of you, it's just pure teasing :D

Get the code :
- https://github.com/darktable-org/dark...
- https://github.com/darktable-org/dark...

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I am Aurélien Pierre, full-stack #photographer and #darktable developer. I work on improving workflows for #photography and I do research and development in #image #processing.

– Retribute my work in development and education (donations) : https://en.liberapay.com/aurelienpierre/
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