@Jade_NL thanks for your request, for this edit i used dev-2711. In the meantime, i am quite sure, those reddish colouring depend of the weird RGB curves, i created.
edit: i tried to load the sidefile in dev-2746 and it worked fine…
2nd edit: i was wrong… the haze removal tool shows a saturation of 100 % - i dont know why… instead of recognizing this, i used the rgb curves as a correction.
3rd edit: and the output profile was set to my monitor , not to sRGB…
Yes, but the hard part is knowing how to use the raw-black points module.
Rawpedia says nothing about haze: http://rawpedia.rawtherapee.com/Raw_Black_Points
But it seems to work very well in conjunction with the haze removal module.
But … How do you get those 239-530-477 values in this image?
The same here:
Where do the values 57-224-219 come from?
Do you have to calculate it by eye?
It must be a very well kept secret :))
Regards!
Changing raw black points alters the white balance as a side effect; however, it is counter-intuitive, so I don’t use this technique very much.
Typically, dehaze algorithms estimate what is called airlight (the particles in the air filter light like a lens) and use that to correct the colour. More advanced algorithms do pre- and post-corrections; and machine learning compares colours against similar subjects.
I was wondering this myself, thinking that @heckflosse’s solution was rather nice/clever but maybe not that practical.
Just merged that into my dev branch; That’s a nice one!
At its current info from the terminal state it is somewhat poor-mans indeed, but rather useful in some cases nonetheless! I’m sure you come up with something streamlined in due time
That also works in darktable btw, but there you have to enter the black levels in a different order (at least for Nikon D200 files) which makes it a bit harder…
In darktable for this file you have to use 530, 239, 477, 530
Here is my take. RT Dev with local adjustments. The key was trying to push the shadows down and pull out some detail, all while trying not to look hyper-realistic by leaving some haze.
DT 3.4.1 I did the dehazing with the dehazing module and local contrast - clarity with multiply blend, then removed the blue color cast with rgb levels