How does a 3D LUT map color gamuts if all it does is give an Output RGB value for a given RGB Input

Started 2 months ago | Questions thread
OP Mandem Junior Member • Posts: 28
Re: Mapping

JimKasson wrote:

If the input gamut exceeds the output gamut, and a colorimetric match is desired, there is no need to map gamuts. The colors will have to be mapped, though, to display or printer space.

If the gamut of the input image exceeds the gamut of the printer or display, then gamut mapping will occur. Gamut mapping is not optional. If the software doesn't do it, the display will, usually with ugly chromaticity shifts.

So it becomes the function of the LUT to map the out of gamut colors to in-gamut ones. There are many ways to do this depending on your usage.

Pardon my ignorance, but what exactly does a colorimetric match mean?

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