What is the "best" denoiser?

Katie Boundary · 14th February 2019, 01:37

Assume the following:

- the noise to be removed isn't caused by anything specific; it's not rainbowing, macroblocking, halation, ghosting, capture static, or anything else with a specific name. It's basically indistinguishable from film grain or dithering.

- it's SEVERE, so it requires the most powerful denoising available that won't result in ghosting or make the image look like it's been reduced to 16-bit color.

- unlimited CPU cycles can be thrown at the problem

- unlimited time CANNOT be spent on tweaking 50 different settings and seeing what works and what doesn't.

What is the best denoiser under these conditions?

ChaosKing · 14th February 2019, 01:49

This one comes close https://github.com/HomeOfVapourSynth...pourSynth-BM3D in combination with the wrapper function in mvsfunc

videoh · 14th February 2019, 02:35

Hard to talk about "best", but DGDenoise is a very fast NLM-type denoiser. It is included in DGDecNV. It requires an nVidia GPU.

LemMotlow · 14th February 2019, 03:59

Why does it require an Nvidia GPU?

videoh · 14th February 2019, 04:05

It uses CUDA cores to get massive parallel processing.

LemMotlow · 14th February 2019, 04:30

That lets me out. And many many many others who wouldn't inflict NVidia cards on their system.
But that is a reason for what's supposed to be a miracle filter meant for all except a few tightass geeks.
In other words, for most of us = useless.
It's a good thing Daguerre, Edison, and Charles Babbage were interested in a wider audience.

videoh · 14th February 2019, 06:09

Too bad, so sad.

My RTX 2080 Ti has 4352 CUDA cores. Eats large frames for lunch. Yummy!

Nobody uses nVidia? Ridiculous:

https://wccftech.com/nvidia-amd-disc...share-q2-2018/

jpsdr · 14th February 2019, 08:37

I personnaly use NeatVideo, which provides, from my point of view, excellent results. The critical step in using it it's building an accurate noise profile, but it's what allow it the excellent results it produces.

ChaosKing · 14th February 2019, 08:46

@LemMotlow There's KNLMeansCL https://forum.doom9.org/showthread.php?t=171379 which also works on amd cpus. Or use tnlmeans (cpu only)

There are also some mentions of potentially better algorithms than bm3d here: https://www.researchgate.net/post/Is...edure_nowadays

hydra3333 · 14th February 2019, 09:30

Quote:

Originally Posted by videoh

Nobody uses nVidia? Ridiculous:

https://wccftech.com/nvidia-amd-disc...share-q2-2018/

Did I read that right ? Did it say 2 to 1 market share ?

I only use nvidia because I accidentally fell into an nvidia card years ago and then stayed with it because I then used DG software in my workflows and couldn't forego the very significant avisynth/vapoursynth speeds and reliability delivered vs everything else.

wonkey_monkey · 14th February 2019, 10:50

I mean come on, it's right there in the rules:

Quote:

12) How NOT to post on this forum:

Do not ask "what's best" because this question cannot be answered objectively. Each and everyone has their own view about what's best in a certain area. The best is what works best for you!

Groucho2004 · 14th February 2019, 11:00

One could argue that the question is not absolute but conditional.

14th February 2019, 01:37	#1 \| Link
Katie Boundary Registered User Join Date: Jan 2015 Posts: 1,056	What is the "best" denoiser? Assume the following: - the noise to be removed isn't caused by anything specific; it's not rainbowing, macroblocking, halation, ghosting, capture static, or anything else with a specific name. It's basically indistinguishable from film grain or dithering. - it's SEVERE, so it requires the most powerful denoising available that won't result in ghosting or make the image look like it's been reduced to 16-bit color. - unlimited CPU cycles can be thrown at the problem - unlimited time CANNOT be spent on tweaking 50 different settings and seeing what works and what doesn't. What is the best denoiser under these conditions? __________________ I ask unusual questions but always give proper thanks to those who give correct and useful answers.

14th February 2019, 01:49	#2 \| Link
ChaosKing Registered User Join Date: Dec 2005 Location: Germany Posts: 1,795	This one comes close https://github.com/HomeOfVapourSynth...pourSynth-BM3D in combination with the wrapper function in mvsfunc __________________ AVSRepoGUI // VSRepoGUI - Package Manager for AviSynth // VapourSynth VapourSynth Portable FATPACK \|\| VapourSynth Database

14th February 2019, 06:09	#7 \| Link
videoh Useful n00b Join Date: Jul 2014 Posts: 1,667	Too bad, so sad. My RTX 2080 Ti has 4352 CUDA cores. Eats large frames for lunch. Yummy! Nobody uses nVidia? Ridiculous: https://wccftech.com/nvidia-amd-disc...share-q2-2018/ Last edited by videoh; 14th February 2019 at 06:24.

14th February 2019, 08:37	#8 \| Link
jpsdr Registered User Join Date: Oct 2002 Location: France Posts: 2,316	I personnaly use NeatVideo, which provides, from my point of view, excellent results. The critical step in using it it's building an accurate noise profile, but it's what allow it the excellent results it produces. __________________ My github.

14th February 2019, 08:46	#9 \| Link
ChaosKing Registered User Join Date: Dec 2005 Location: Germany Posts: 1,795	@LemMotlow There's KNLMeansCL https://forum.doom9.org/showthread.php?t=171379 which also works on amd cpus. Or use tnlmeans (cpu only) There are also some mentions of potentially better algorithms than bm3d here: https://www.researchgate.net/post/Is...edure_nowadays __________________ AVSRepoGUI // VSRepoGUI - Package Manager for AviSynth // VapourSynth VapourSynth Portable FATPACK \|\| VapourSynth Database

14th February 2019, 02:35	#3 \| Link
videoh Useful n00b Join Date: Jul 2014 Posts: 1,667	Hard to talk about "best", but DGDenoise is a very fast NLM-type denoiser. It is included in DGDecNV. It requires an nVidia GPU.

14th February 2019, 03:59	#4 \| Link
LemMotlow Registered User Join Date: Jul 2011 Location: Tennessee, USA Posts: 266	Why does it require an Nvidia GPU?

14th February 2019, 04:05	#5 \| Link
videoh Useful n00b Join Date: Jul 2014 Posts: 1,667	It uses CUDA cores to get massive parallel processing.

14th February 2019, 04:30	#6 \| Link
LemMotlow Registered User Join Date: Jul 2011 Location: Tennessee, USA Posts: 266	That lets me out. And many many many others who wouldn't inflict NVidia cards on their system. But that is a reason for what's supposed to be a miracle filter meant for all except a few tightass geeks. In other words, for most of us = useless. It's a good thing Daguerre, Edison, and Charles Babbage were interested in a wider audience.

14th February 2019, 11:00	#12 \| Link
Groucho2004 Join Date: Mar 2006 Location: Barcelona Posts: 5,034	One could argue that the question is not absolute but conditional. __________________ Groucho's Avisynth Stuff