Search found 11 matches

by B4adle7
2018-12-19T17:05:51-07:00
Forum: Digital Image Processing
Topic: Convert 3D LUT to hald image
Replies: 35
Views: 98898

Re: Convert 3D LUT to hald image

Here is the Python function for converting a .cube to a HALD image. Note: It uses a subprocess.call to execute a standard "magick" command that the function builds and executes. The function uses a personal "BASE" module that I use to identify which OS it may be executing on and gives the appropriat...
by B4adle7
2018-12-18T22:10:02-07:00
Forum: Digital Image Processing
Topic: Convert 3D LUT to hald image
Replies: 35
Views: 98898

Re: Convert 3D LUT to hald image

Perfect.. thanks for the input. I've had a chance to do some further work on it, and yes confirmed on the cubed size for the HALD. e.g. hald:4 is a resolution of 4**3 x 4**3 I do have a function created now that creates a HALD from a .cube with the option to tell it what HALD level you desire. I wil...
by B4adle7
2018-12-17T13:07:54-07:00
Forum: Digital Image Processing
Topic: Convert 3D LUT to hald image
Replies: 35
Views: 98898

Re: Convert 3D LUT to hald image

Ok.. very interesting. Did not know about the magick cube:"<lut.file>" "<out_hald_file_image>" ability. But no go yet. It seems the image it produces has the color gradients going in different directions than what the working HALDs have. e.g. green seems to go from low to high horizontally left to r...
by B4adle7
2018-12-17T12:41:40-07:00
Forum: Digital Image Processing
Topic: Convert 3D LUT to hald image
Replies: 35
Views: 98898

Re: Convert 3D LUT to hald image

ImageMagick does not have OCIOLutTransform node, as far as I know. What is it? Is that code available? For imagemagick purposes, we do not have any mechanism to apply the CUBE LUT to a HALD image, such as OCIOLutTransform node, as far as I know. What is OCIOLutTransform? Is that code available? So ...
by B4adle7
2018-12-13T15:08:10-07:00
Forum: Digital Image Processing
Topic: Convert 3D LUT to hald image
Replies: 35
Views: 98898

Re: Convert 3D LUT to hald image

How they are being created now is by taking an identiy HALD. e.g. magick.exe convert hald:4 -depth 16 C:\temp\identy_hald.exr Then taking it into your compositing app of your choice, applying the LUT (.cube) via an OCIOLutTransform node, then saving the HALD file out as desired for what the LUT it r...
by B4adle7
2018-12-12T10:24:26-07:00
Forum: Developers
Topic: Are YCbCr 422/420 supported in ImageMagick?
Replies: 5
Views: 8337

Re: Are YCbCr 422/420 supported in ImageMagick?

Hi prashant. Have you found your solution? May be a couple months out, but am pretty familiar with working with dealing with the 420, 422, 444 formatting issues. Just a start in case it comes in useful, is trying to understand what issue you are running into. Also trying to understand the perspectiv...
by B4adle7
2018-12-12T10:04:17-07:00
Forum: Digital Image Processing
Topic: Convert 3D LUT to hald image
Replies: 35
Views: 98898

Re: Convert 3D LUT to hald image

I see. The most common ones seem to be Autodesk .3dl and Adobe .cube. If these don't differ in themselves, that might be a good start. I'm not an expert in this field. But if ImageMagick was able to utilize most common standards, it might help some folks. Just my $0,02. Agreed. I see a lot of commo...
by B4adle7
2018-12-11T22:46:30-07:00
Forum: Users
Topic: Linux standalone compare utility
Replies: 4
Views: 6291

Re: Linux standalone compare utility

This would be extremely useful.
Is it possible?
by B4adle7
2018-11-24T23:17:04-07:00
Forum: Developers
Topic: Request for LUT file support (.cube, .lut, .3dl..)
Replies: 3
Views: 5184

Request for LUT file support (.cube, .lut, .3dl..)

Upon asking if Imagemagick supported .cube files yet, it was suggested to come here and post to ask for the feature request. Feature Request: Support for 1D/3D LUT (Look Up Table) files. e.g. .cube, .lut, .3dl. https://en.wikipedia.org/wiki/3D_lookup_table https://wwwimages2.adobe.com/content/dam/ac...
by B4adle7
2018-11-24T22:38:28-07:00
Forum: Digital Image Processing
Topic: Convert 3D LUT to hald image
Replies: 35
Views: 98898

Re: Convert 3D LUT to hald image

Thank you for the responses, and forgive the delay in reply. Yes I will post that to the developers forum. If any of those formats are valid image formats, then a suffix (.lut etc) isn't sufficient. Unsure of the note here, but just in case. .lut is a "Look Up Table". Same data as in a .cube, shlut,...
by B4adle7
2018-06-10T10:42:57-07:00
Forum: Digital Image Processing
Topic: Convert 3D LUT to hald image
Replies: 35
Views: 98898

Re: Convert 3D LUT to hald image

How can we make a feature request to support .cube and/or other basic 3D Lut data files? (.lut, .shlut, .3dl, .cube) Currently ImageMagick supports other data files such as CDLs. However it currently only supports HALD files for LUT transforms. In order to create the HALD files ImageMagick users nee...