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Post #792617

Author
jerryshadoe
Parent topic
Color matching and prediction: color correction tool v1.3 released!
Link to post in topic
https://originaltrilogy.com/post/id/792617/action/topic#792617
Date created
8-Oct-2015, 8:37 PM

First off, holy sh*tballs Batman! Just WOW! Amazing tool and fantastic results. Thank you very much for sharing this with the community.

For those of you with weaker machines, like mine, (I'm on a laptop that has a dual-core 2.3ghz processor with 4gb of ram) I wanted to let you know what kind of "waiting" time you are looking at. So with the "default" settings when you run the GUI (multi color space model and stabilization factor of 1) it took about 1 hour and 45 minutes to build a color model. Damn, that was a long time, LOL... However, it only took about 35-40 seconds (per image) to process images with the model. Not the fastest, but it does the job and, again, thanx for sharing.

Ok, so in one of the earlier posts I noticed someone asking about using this tool to color-correct the 16mm scan of Song of the South. I, too, was very curious about it and since no one posted anything in regards to that, I figured I would give it a shot;)

For now, due to the long time it take to build the color model, I have only had the chance to process one frame, as when trying to use the same color model for other frames (from other scenes) it created incorrect results which means I will need to build a few color models for this one...

Anyway, for reference, I took a couple frames from the 35mm, broken file, 1080p copy. Now, I know that there is a problem with the colors there and I loaded the image into my paint program. There, I desaturated the the magenta by 18%, desaturated the purples and reds by 8%. This created a much more "natural" look, especially when it comes to flesh tones.

Here are a couple of examples of this (top- original frame/bottom- my correction)

Now, whether these settings are actually "right" is still up for debate (I'm sure) but it seemed closer to what it should be IMHO so I decided to go with this color-correction for reference image when testing this tool.

The 16mm frame I used for testing here is this one:

The next two images are the 35mm reference image (top) and the 16mm corrected to it (bottom)

Granted, it's not perfect and I might need to use a higher stabilization factor, but I think it's a lot closer than the original 16mm frame. What do you guys think?