Hi, I have given up on the gopro Native/Protune IDT with math because it doesn’t work accurately, the colours are slightly unmapped, even when using the supposedly correct Primaries and White Point. I don’t know where is the middle grey in the Protune Flat Log Profile…
Having said that I don’t want to give up on understanding the making of an IDT for my Gopro and Super 8 Kodak Vision3 film stocks.
I have decided to use the Black-Box method to produce a 5500K° and 3200K° IDT with the IDT-Calculator.
X2 Aputure B7C Bulbs
X1 X-Rite Classic ColorChecker
X1 Calibrite Grey-Card
X1 Sekonic L-558 CINE (Nits Reading)
X1 Gopro Hero 11 Black Back-Bone Mod
X1 Beaulieu 4008 ZMII (Kodak )
X1 Schneider-Kreuznach Optivaron 6-66mm F1.8
I have done the bracketing on the gopro (for 5500K° Aputure B7C Illuminant)
I followed the instructions, exported those TIFF, and done the Implicit and Explicit folder zip.
I uploaded these files on the web version of the idiot-calculator, but once it uploads, then nothing. It should give the option to Compute IDT Matrix. But it doesn’t do anything. I decided to run the app locally.
So then I’m trying to build the github repo in Docker. The image didn’t build and gave me messages about incompatible packages and dependencies…
I figured there was an error on the python package called “colour==0.4.2” in the requirements.txt. I changed it for “colour==0.1.5” which is the latest available version.
And for it to work, I also had to change the Dockerfile and replace the first line “FROM python:3.8” with “FROM python:3.9”.
Then the image finally built and I could try to run the IDT-Calculator app.
But, it doesn’t work…
I get to a certain point and then it spits out this error:
ImportError: cannot import name ‘whitepoint_preserving_matrix’ from ‘colour.characterisation’ (unknown location)
[2023-06-23 22:58:38 +0000]  [INFO] Worker exiting (pid: 10)
[2023-06-23 22:58:38 +0000]  [INFO] Shutting down: Master
[2023-06-23 22:58:38 +0000]  [INFO] Reason: Worker failed to boot.
I also looked at the docker GUI in windows and I see many yellow and red shields, probably indicating lot more issues…
This is the story of how far could I go without any knowledge in programming. I can’t debug this app, I suspect that I didn’t build the repo in a docker image properly. Maybe that’s why it doesn’t work… If ever someone would give me a little push, or give a hand on this matter, I would be very very happy. You have no idea how much I want to know about IDTs. The Black-Box option is a brilliant way to have a sufficient reproduction of colours without the budget of a Hollywood production. You guys rock!!! Go ACES!