search

videovillage / Lattice-Issues

Feature requests, bug tracking, questions, and issues for Lattice.
https://videovillage.co/lattice
6 stars 2 forks source link

Add support for creating "neutralizing" LUTs from Chip Chart images #48

Closed gregcotten closed 5 years ago

joe12south commented 9 years ago

I second this motion.

frankjonen commented 8 years ago

Yes please!

QuentinBrown commented 8 years ago

As a side feature, and maybe easier to implement as you won't have to manually map the chips to be analysed to the portions of the captured image, would be the ability to generate a LUT from a processed digital chip chart. The source chip chart would have to be supplied as a file with Lattice, then when say a stills editor is used to create a look that it cannot export as a 3DLUT you can put the chip chart image through the same process in that software, output it and have lattice analyse the difference from the original reference and generate a 3DLUT. Being able to process a batch of these images into LUT's could also be very useful.

gregcotten commented 8 years ago

Quentin,

This feature is already supported actually and is “batchable” as well. Just export an identity 3D LUT as an “Unwrapped Cube Image”, “CMS Test Pattern” or “HALD CLUT” - it creates a .tiff image representation of a 3D LUT that you can then process through an application that doesn’t support 3D LUT creation. You can then open that back up in lattice or simply drag and drop into the batch exporter.

On Fri, Jun 10, 2016 at 10:58 AM QuentinBrown notifications@github.com wrote:

As a side feature, and maybe easier to implement as you won't have to manually map the chips to be analysed to the portions of the captured image, would be the ability to generate a LUT from a processed digital chip chart. The source chip chart would have to be supplied as a file with Lattice, then when say a stills editor is used to create a look that it cannot export as a 3DLUT you can put the chip chart image through the same process in that software, output it and have lattice analyse the difference from the original reference and generate a 3DLUT. Being able to process a batch of these images into LUT's could also be very useful.

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/videovillage/Lattice-Issues/issues/48#issuecomment-225252202, or mute the thread https://github.com/notifications/unsubscribe/AA4bNi_uxr1BE26vq1voaHlag_2OgC1Lks5qKaXhgaJpZM4F-HKL .

QuentinBrown commented 8 years ago

This is excellent news. Very glad this feature is already here and I didn't realise. It would be great if someone out there produced a calibrated printed chart like a HALD CLUT (maybe backlit?) with a full gamut to match ACES if such a thing were possible. Then we could film/photograph it and generate all sorts of camera matching, film stock & process matching & correcting LUTs.