Thursday, July 22, 2021
9:30 - 10:30am Pacific Time
Dropbox Paper link for this group:
We use the same GoToMeeting link and phone numbers for all working groups.
You may join via computer/smartphone (preferred) which will allow you to see any presentations or documents that are shared or you can join using a telephone which will be an audio only experience.
Please note that meetings are recorded and transcribed and open to the public. By participating you are agreeing to the ACESCentral Virtual Working Group Participation Guidelines
Audio Only
You can also dial in using your phone.
Dial the closest number to your location and then follow the prompts to enter the access code. United States: +1 (669) 224-3319 Access Code: 241-798-885
Here is a link to a Google Colab version of the code to generate (a slightly tweaked version of) the test pattern I showed in the meeting. It also includes CIExy plots of the original and compressed pattern.
Because OpenImageIO is needed to write an ACES compliant EXR, and that will nor run in a Colab, I have commented out the OpenImageIO based lines, and added some code which uses ImageIO to write a 32-bit PIZ compressed EXR.
Here is a proper ACES EXR of the test pattern, together with gamut compressed versions made using ctlrender and BlinkScript.
This will produce the following output if the images match:
0 < 0,0,0
0 > .002,.002,.002
2073600 within range
We would be grateful if people could take a look at the proposed test pattern, so we can get feedback for discussion in this week’s meeting. In particular, input from @michaelch, @bill, @ptr, @daniele and @doug_walker would be greatly appreciated.
