About the new Color checker LUT module in DT

[Carmelo_DrRaw]

@Claes

From what I have understood so far, DT/LUT module and G’mic/custom 3D LUT are not intended to do the same thing (even if they probably in certain cases are able to perform identical tasks).

That is actually one of the questions I have as well… for what I can understand, with modules basically map the RGB value of some given reference patches to another RGB value, and interpolate the values in between. So for me the basic functionality is the same, but I might be missing something.

@paperdigits

I thought the DT LUT was 2D? I could’ve read it wrong.

I think that the DT LUT is also 3D, because it maps RGB values into RGB values (so 3 values into 3 other values, hence the definition of “3D”). It is true that the patches are arranged into a 2D plane, but that is to my mind only a UI visualisation.

There exist also 1D LUTs, which apply the same transform to the three RGB components (more or less like tone curves do…).

I’m not an expert, so I might well be wrong. Maybe some DT or G’MIC expert can clarify this? I evoke @houz and @David_Tschumperle to help us here…

@Claes

Well… There is only one way to find you, right? Either you do it - or I do it – or someone else makes the comparison…

I’d love to play with this tools, but I have zero time at the moment