AI Denoising

[kajili]

Is your feature request related to a problem? Please describe. I wonder if it would be possible to implement some form of AI denoising (like DxO etc.)

Describe the solution you'd like AI-based denoising to improve high ISO file quality

Alternatives denoise (profiled) but it doesn't do nearly as well as DxO or other AI denoisers

Additional context I don't know the feasibility of this type of feature in darktable but it would certainly be an amazing addition if possible

[MStraeten]

it would be possible if someone implements it. Have a look at https://discuss.pixls.us/t/feedback-needed-integrating-nind-denoise-with-darktable/51393/120

[kajili]

it would be possible if someone implements it. Have a look at https://discuss.pixls.us/t/feedback-needed-integrating-nind-denoise-with-darktable/51393/120

That is great news. Glad it's being worked on. Seems like it's being tested as a lua script but hopefully it'll get added as a full module eventually.

[esq4]

I tried it. It's fantastic! Here are some crops before and after denoise.

Upd. Here with the minimum necessary correction.

[TurboGit]

It seems that there is not only denoising but also adding some local contrast.

[esq4]

Yes, of course, I used local contrast, tone curve, sharpen, and other modules besides noise reduction before denoise. And the difference between crops is only in the application of this procedure. But I didn't understand your remark "there is no denoising". Can you please explain?

[TurboGit]

"there is no denoising". Can you please explain?

I meant (and corrected now): there is not only denoising but also...

[TurboGit]

I see the updated minimal version. I suppose that just denoise profile on chroma should be pretty close, no?

[esq4]

denoise profile on chroma

I'm sorry, my English is so weak that I understood the question, but I didn't understand what it was about 😕 If about the crops above, then some settings have been added to them to increase sharpness and for beauty (local contrast, tone curve, sharpen, and other; but not all).

[victoryforce]

I'm sorry, my English is so weak that I understood the question, but I didn't understand what it was about 😕

@esq4 Well, I don't know how to rephrase that question in a more understandable way. It's written in pretty simple English. Maybe you can understand my translation into Ukrainian?

[esq4]

Thank you 😄 But I finally figured out that the question was about the "wavelets: chroma only" preset of the "denoise (profiled)" module. I added two more crops: (2) the "wavelets: chroma only" preset and (3) the "default" (when the parameters are reset).

[TurboGit]

Clearly good enough for me. Just print it and you'll not be able to see noise. I was really surprised by this when printing for an exhibition, some of my pictures where very high ISO, the noise was visible (a bit like 2) and after printing on paper the image was pretty clean. So yes the AI denoise remove more noise, but that's generally not necessary.

[esq4]

I almost agree with you. I've seen some of your wonderful work. And noise isn't noticeable on them (and sometimes it's useful). But not all models can take up the entire frame, or most of it. And not all of them can be approached closely (and some shouldn't be approached). For example, my models often fit within 1/10th of the frame size. And it's precisely this good noise reduction that makes it clear that they're covered not with plastic, but with fur or feathers, and not dusty. And at the same time it saves a lot of time.

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