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Asd-g / avslibplacebo

AviSynth+ libplacebo.
GNU General Public License v3.0
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Use of LUTs #5

Closed tormento closed 1 year ago

tormento commented 1 year ago

I saw that LUT can be used in dithering but I am wondering if we are talking of the same LUT such as the ones for PQ to HLG conversion.

Is there a way to use a LUT for that usage, possibily in tetrahedral interpolation?

Asd-g commented 1 year ago

I saw that LUT can be used in dithering but I am wondering if we are talking of the same LUT such as the ones for PQ to HLG conversion.

It's different LUT.

Is there a way to use a LUT for that usage, possibily in tetrahedral interpolation?

No. Btw there is tonemapping function that can do PQ->HLG.

tormento commented 1 year ago

How precise is tonemapping compared to AVS/VSCube and a commercial PQ to HLG LUT?

Asd-g commented 1 year ago

When talking about tonemapping, nothing is precise. Just tried it and see.

tormento commented 1 year ago

If you are on Doom9 forum, you can see the bad approximation of trilinear functions instead of tethraedral, there are many images, from FranceBB and other guys.

Asd-g commented 1 year ago

I talked about tonemapping. It can be done without LUTs.