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Green Tint Reduction without Magenta

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I don't work with photographs very often, but a couple of weeks ago I was given a very large collection of old photos that had been digitized from the original film. About 25 of these have a nasty green tint. I guess the camera was on the wrong setting(s)... I don't know.


Anyways, when I reduced the Green channel to a reasonable amount, parts of the photo became Magenta. :/

I wrote a script to check for Magenta's Hue range. That worked, but it also caused Reds to become desaturated. Therefore, I also had it check the Saturation amount within that Hue range.


Here's the script:

EDIT: Get it here: https://forums.getpaint.net/topic/111835-green-tint-reduction-v10-oct-2-2017/



Set the Tint Reduction, and then lower the Red Tolerance as needed.


Here are some examples.






See how the Red is preserved without adding Magenta into the photo?

green2-before.jpg  green2-after.jpg



Afterwards, further color adjustment could done with Curves, Levels, ect.


Edited by toe_head2001
  • Upvote 3

(September 25th, 2023)  Sorry about any broken images in my posts. I am aware of the issue.

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