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Re: ocio2icc - Can I Create An ICC Profile From An Existing 3dl/csp LUT?

I don't have

By mich...@... · #1575 ·

Re: ocio2icc - Can I Create An ICC Profile From An Existing 3dl/csp LUT?

Assuming that you have OCIO compiled, the command line tool "ociobakelut" should fill that need. ociobakelut --lut <your_lut.3dl> --format icc --description <description> <output_file.icc> There is an

By Sean Cooper <se...@...> · #1574 ·

Re: ocio2icc - Can I Create An ICC Profile From An Existing 3dl/csp LUT?

Can you do one with it for me. I can pay

By mich...@... · #1573 ·

Re: Photoshop plug-in

Thanks Brendan, the new beta worked without any errors. Cheers! ------------------------------- Simon Björk Compositor/TD +46 (0)70-2859503 www.bjorkvisuals.com 2017-02-13 18:01 GMT+01:00 Brendan

By Simon Björk <si...@...> · #1572 ·

Re: Photoshop plug-in

Yep, that's a bug! I've posted a new beta with a fix. Let me know if you find other problems.

By Brendan Bolles <bre...@...> · #1570 ·

Re: Photoshop plug-in

Hi Brendan, I tried with a few configs (my custom, ACES and Nuke default). Here's some screenshots (nuke-default): https://www.dropbox.com/sh/16753ezhpozn9r6/AADnZy3uRl7WXgMdW8ZkoVSBa?dl=0 Best

By Simon Björk <si...@...> · #1571 ·

Re: Photoshop plug-in

Hey Simon, it's supposed to work. I think this is what we call a bug (you'll notice the plug-in is actually in beta). Which configuration and settings are you using? Brendan

By Brendan Bolles <bre...@...> · #1569 ·

Re: Photoshop plug-in

This is great Brendan, thanks a lot! It will save lots of time. One thing though. How is the Display option supposed to work? When I try to use it I get the following error: Coul not complete the

By Simon Björk <bjork...@...> · #1568 ·

Re: Photoshop plug-in

Or maybe create some! ;) I've spent a fair amount of time making Photoshop do this stuff for a few different studios, and it's really a pain in the neck. After jumping through a bunch of hoops I have

By Brendan Bolles <bre...@...> · #1566 ·

Re: Photoshop plug-in

Looks very interesting! Certainly will make a lot of headaches go away, I'll try and take a gander asap. And yes, we will be taking pull requests again.

By Sean Cooper <se...@...> · #1565 ·

Photoshop plug-in

Hey everyone, I've made an OCIO plug-in for Photoshop. There are download links in this blog post: http://fnordware.blogspot.com/2017/02/opencolorio-for-photoshop.html I've got the code in my GitHub

By Brendan Bolles <bre...@...> · #1564 ·

Re: reversable, but not 1D color transforms in config.ocio

Cool, that's what I thought. Just making sure you hadn't snuck anything else in there I hadn't noticed! And yeah re: LAB space vs Log space for doing the actual sharpen --that's an interesting idea

By Andrew Wood <andre...@...> · #1563 ·

Re: reversable, but not 1D color transforms in config.ocio

> Troy, I was looking through your (amazing) example, and the only part that I didn't recognize was the matrix you used to go from RGB to XYZ based on srgb d65 primaries. I didn't do much other than

By Troy Sobotka <troy.s...@...> · #1567 ·

Re: reversable, but not 1D color transforms in config.ocio

You all are my heros. I had gotten so caught up in the XYZ to LAB calculation that I didn't notice it could be reduced to a 1d LUT and simple matrix. Troy, I was looking through your (amazing)

By Andrew Wood <andre...@...> · #1562 ·

Re: reversable, but not 1D color transforms in config.ocio

Doesn't really answer your question (sorry) but.... On Transformers the director wanted sharper cg robots! so we had a sharpen shootout. The joint winners were either LAB or Log, unshapen masks.i.e.

By ra...@... · #1561 ·

Re: reversable, but not 1D color transforms in config.ocio

Whilst stranded in an airport... https://gist.github.com/sobotka/97707cf481049fd3267d85510f30db1e No assurances expressed or implied. Seems the values are darn close to Lindbloom's, which may account

By Troy Sobotka <troy.s...@...> · #1560 ·

Re: reversable, but not 1D color transforms in config.ocio

The conversion from XYZ to CIELab can be done with matrices and 1d-LUTs, so you should be able to do the forward and reverse quite exactly with the existing machinery and without resorting to

By doug <colo...@...> · #1559 ·

Re: reversable, but not 1D color transforms in config.ocio

The shaper here would be a purely technological solution, simply helping out interpolation given that your input happens to be imagery. In your CTL, you would assume that you are being fed Log2 values

By Troy Sobotka <troy.s...@...> · #1558 ·

Re: reversable, but not 1D color transforms in config.ocio

L* is inherently logarithmic, so perhaps you could use L* it's self as the shaper here. But I think the inherently negative a*b* values will make this effort futile, unless there is an alternative all

By Sean Cooper <se...@...> · #1556 ·

Re: reversable, but not 1D color transforms in config.ocio

Looking at my values closer, looks like you are probably right. My input image is 0 to 1 linear, so I wasn't using a shaper. However, when I get to LAB space, there are negative values, which would

By Andrew Wood <andre...@...> · #1555 ·

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