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TOPIC: Noise reduction

Re: Noise reduction 1 year, 11 months ago #125744

  • schrauber
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For the way you planned to solve the problem.
If Google translated this correctly.
Mainly automatically translated
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Re: Noise reduction 1 year, 11 months ago #125745

  • hugly
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Got it!

Because high iso noise lives mostly in the chroma channels RGB separation without luma channel won't work as good as R G B chrom + luma.
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Re: Noise reduction 1 year, 11 months ago #125805

  • micjamwat
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Thanks for that detailed example, much appreciated. I installed the super blur effect and have been playing around a bit. So far the results are certainly smoother but also a bit to soft. I will keep experimenting and learning

Ultimately I'm sure the answer is to avoid the noise in the first place with better lighting but this project has certainly taught me a lot about correction and effects.

Re: Noise reduction 1 year, 11 months ago #125806

  • jwrl
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That effect was never intended to be used as a noise reduction tool. If it works one, fine, but I didn't design it to do that.

Re: Noise reduction 1 year, 11 months ago #125809

  • hugly
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jwrl wrote:
That effect was never intended to be used as a noise reduction tool. If it works one, fine, but I didn't design it to do that.

Yep, as I said above, "It's a bit like hammering concurring artefacts into your pictures"

micjamwat wrote:
Ultimately I'm sure the answer is to avoid the noise in the first place with better lighting

The camera is the best place to perform noise reduction but grain is sometimes used to get a special look. From cinema we are used to see grainy night shots for example. Some directors and photo artists use it inentionally.

Saying this, you may also try another approach. Don't use blurring and sharpenning, add grain to the noisy picture and see how it looks. No joke!

In user effect under Noise and Grain you will find FxNoise.fx and Grain.fx if you want to try it.
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Last Edit: 1 year, 11 months ago by hugly.

Re: Noise reduction 1 year, 11 months ago #125816

  • hugly
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Another denoiser which might be of some interest:

www.redgiant.com/products/magic-bullet-denoiser-ii/
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Re: Noise reduction 1 year, 11 months ago #125818

  • RWAV
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I made a short test with the build in noise reduction of Fusion 8 RWAV mentioned above with the free version of Fusion. It seems to work fine at least with a still image. I don't know whether it supports this kind of "moving noise compensation" Resolve does.

Fusion has always been a specialised moving image tool - don't quite know what 'moving noise compensation' means in this context but the basic Fusion noise removal tool allows for both selective or grouped chroma and/or colour based blur and edge enhancement effects - yes folks - that what all noise removal is - just another set of artefacts added to your image - as suggested previously - tread lightly.
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Re: Noise reduction 1 year, 11 months ago #125819

  • hugly
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don't quite know what 'moving noise compensation' means in this context

Have a look to the first video I posted above where noise reduction in Resolve is shown. That's what I'm reffering to. Resolve has a tracking mode (the paid version) which adapts noise reduction to subsequent frames to avoid (to compensate, to reduce) moving artefacts caused by the noise reduction itself, not visible on a single frame but when the video is played.
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Last Edit: 1 year, 11 months ago by hugly.
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