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DeclanRussell / NvidiaAIDenoiser

A simple implementation of Nvidia's AI denoiser
MIT License
398 stars 52 forks source link

Denoised image isn' t much better than input #9

Closed SynneK1337 closed 4 years ago

SynneK1337 commented 5 years ago

Hello. Recently, I wanted to try this AI but the result was... really bad. I took a shot on my Sony A99 II with very high ISO, convert it from RAW to JPG inside Photoshop and then put it into this AI.

Input

input

Output

denoised

Specs

Ryzen 7 2700X MSI X470 Gaming Pro 2x16GB G.Skill Ripjaws V 3000MHz CL15 GTX 970 4GB (Driver version: 416.34)

Used command

denoiser.exe -i raw.jpg -o denoised.jpg -hdr 0 switching hdr to 1 didn' t change anything

ultra-sonic commented 5 years ago

I have to disappoint you mate, but this denoiser ONLY works on computer generated (read rendered) images. It has NO IDEA what to do with noise from an image-sensor.

DeclanRussell commented 5 years ago

I have done some similar tests with the denoiser and photos with similar results. It seems that it is not very good at denoising spectral noise. I did have some success with monochrome photos. This is likely due to the renderer that the training data was generated with also producing monochrome noise in the renders.

SynneK1337 commented 5 years ago

Oh :( Is there any cool AI Algorithm to remove noise and scratches (from old photos shot on analog camera) to use instead?

RyanOY commented 5 years ago

If you highlight the noise in a real picture by sharping it, you can get a denoised picture out of this ai denoiser. Here are the samples: https://photos.app.goo.gl/L8tydgmijZWgxUMN8

SynneK1337 commented 5 years ago

Yes, but it makes output very very soft. Nvm, I'll use Topaz Denoise or AI Clear instead of this :(