Mappings that are not popular and not often, if ever, used here

Most images posted here are aimed at conventionally high image quality in addition to good composition.

There is a class of processing called "Mapping" which can improve global image quality in one shot as opposed to messing with a good few editor sliders until it looks right.

One such pre-AI mapping is called "Retinex" - invented by E. Land of the Polaroid Co. long ago. Popular for aerial shots or scenes with haze, fog or mist.

I simulated such a scene in the GIMP:

Then applied a Retinex mapping with the G'MIC plugin and no subsequent adjustments:

Talk about 'cutting through the mist' !!

Comments invited

Another one: "Contrast-Limited Adaptive Histogram Expansion" (CLAHE).

Original:

Brightened a bit then CLAHE applied with no subsequent adjustments:

Good for cloud contrast ...

Geek link: www.geeksforgeeks.org/python/clahe-histogram-eqalization-opencv/

I hate to ask, Arvo, but why?

My experience is that Retinex doesn't do very well when applied to normal images.

Here's one that, like CLAHE, adjusts a histogram but only the global one, not broken into separate tiles.

Original:

This is the GIMP's Color>Auto>Equalize. With no available adjustments it's a bit fierce:

Might work if blended with the original but I'm only talking about one-shot methods in this thread.

Your wish is my command :-|

Not sure what is meant by "enable it", Alan. I have three apps that come with it, the GIMP, RawTherapee and ImageJ.

So, I have no idea, sorry ...

Maybe Lightroom can take this plug-in?

www.russellcottrell.com/RCFilters/Retinex.php

Arvo, there it says:

As I have just now demonstrated ...