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Old 19th April 2006, 20:32   #1  |  Link
Soulhunter
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Fractal denoising: FRFun

Ok, here is the original thread and here is the binary... Please post feedback regarding its denoising capability's [comparisons to other denoisers, situations where it works well, situations where it fails...]

Oh, and dont ask for the source, Im not the author of this filter... ;P

EDIT: Look here... and here!


Tia n' Bye
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Last edited by Soulhunter; 12th August 2006 at 17:04.
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Old 19th April 2006, 21:11   #2  |  Link
BigDid
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Hi Soulhunter,

Thanks for the good work. FRFun seems great and quicker than FFT3dfilter

I am a total noob concerning avisynth filters, could you elaborate more on FRFun specially concerning the parameters ?

I have seen interesting things on your page, could you consider adding a few denoisers in your denoiser comparison? I'm thinking about Fft3dgpu (to see speed advantages and if PSNR is equal or close to Fft3dfilter) and Removegrain, maybe mode7 or 8, to see if close or quicker than degrainmedian ?

Thank you for your time.

Did
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Old 19th April 2006, 22:52   #3  |  Link
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FRFun3b(T,Tuv,S)

The first parameter "T" is the luma threshold the second "Tuv" the chroma threshold (both are floats). As most sources have less chroma noise than luma noise its a good idea to keep the chroma threshold lower than the luma threshold! The last parameter "S" is the subsampling: More subsampling = less processing = faster, but also less precise! Its a "speed -vs- quality" trade...

For the denoiser comparison: Well, Im still looking for a better metric to measure the denoising quality! MSUs blur metric looked promising, but after some tests I discovered that its useless (at least for my purpose). But as soon I find something better, Ill start a bigger and better comparison... So, stay tuned!


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Last edited by Soulhunter; 19th April 2006 at 22:58.
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Old 20th April 2006, 00:24   #4  |  Link
Alain2
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Oh so it's float again ; is speed as good as previous 3b version with int parameters ? (I know, I will test, but a small indication from you is always nice )

What is the address of your webpage as mentionned by BigDid ? I only see the irc link in your signature...
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Old 20th April 2006, 00:35   #5  |  Link
Soulhunter
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Quote:
Originally Posted by Alain2
Oh so it's float again ; is speed as good as previous 3b version with int parameters ?
Yes, should be ~ the same!

Quote:
Originally Posted by Alain2
What is the address of your webpage as mentionned by BigDid ?
Hint: The link to the frfun binary points to it!


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Old 20th April 2006, 06:13   #6  |  Link
zlab
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Hi,
Any suggestion for lo, medium noise filtering parameters? pls.
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Old 20th April 2006, 09:26   #7  |  Link
Arlong
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That's a nice filter. I tried it with FrFun(3,2,2) and this is what I get:

Source


FrFun


It removes well grain and kills noise without harming too much detail. Well, maybe hair looks a little overfiltered.

FFT3dFilter(sigma=10,sigma2=0.9,sigma3=0.9,sigma4=6) is worse in terms of noise reduction: the walls are still crowded with grain. Detail level seems to be almost equal in both pictures.

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Old 21st April 2006, 14:22   #8  |  Link
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For me it looks like Frfun did a much better job. It removed more noise and kept more detail at least her cloth look more detailed than with fft3d.
I guess I will do some tests myself now!
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Old 21st April 2006, 16:15   #9  |  Link
Mug Funky
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remember that fft3d can go temporal (in several ways too... bt=0 is my favourite but one has to be very careful with sigmas).

btw, i find that this is a good one for speed:
frfun3b(6,6,3)
degrainmedian()

i noticed a tendency toward "salt and pepper" jaggies when subsampling is increased, but following with degrainmedian will reduce those (this is more for the encoder's benefit than the viewer).

good filter - i can't wait to see the bollocks optimised out of it and a temporal mode introduced . with motion-compensation it could be a real noise killer, but i'd only use it on really big frame sizes because it appears to eat details for lunch if abused.
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Old 21st April 2006, 19:24   #10  |  Link
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@Mug Funky

i am interesting when you use degrainmedian() command thas degrainmedian work with default parametars like this (limitY=4,limitUV=6,mode=1) or not?

What all of you suggest parametars for little noise and with much noise on interlaced film?
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Old 21st April 2006, 21:37   #11  |  Link
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@Soulhunter

Good filter. It cleans well with default parameters (rare thing). It loss any detail (e.g. shadows in faces) but generally is not noticeable. I think that a temporal behaviour could preserve some detail but I have not clue how to do it. It is very good fighting blocks from mov files. Tend to be slow but not in excess. Anyway is another tool for the box. Thanks.
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Old 23rd April 2006, 20:54   #12  |  Link
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link not working?
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Old 24th April 2006, 13:49   #13  |  Link
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no, link working!


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Old 24th April 2006, 23:26   #14  |  Link
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" Soul"

It is a very good filter, but it is a little slow.
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Old 25th April 2006, 00:58   #15  |  Link
Heini011
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current binary:

FrFun3b(3,2,2)

avisynth open failure:
script error: Invalid arguments to function "FrFrun3B"
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Old 25th April 2006, 01:02   #16  |  Link
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avisynth won't autocast int to float or vice versa. Use 3.0, 2.0, 2.0. >.> (I could have sworn this was working before, but perhaps not.)
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Old 25th April 2006, 02:07   #17  |  Link
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Humm, frfun3b(3,2,2) works perfectly here, I just downloaded and re-installed the dll from the link above to get sure... :\ Maybe its related to the avisynth version (I use 2.56)!? Oh, and btw, the last param (subsampling) is int, not float, so it should be frfun3b(3,2,2) or frfun3b(3.0,2.0,2), but not frfun3b(3.0,2.0,2.0)!

EDIT: Just noticed Heini011 wrote 'script error: Invalid arguments to function "FrFrun3B"'. But it should be "FrFun3B" not "FrFrun3B"! Leaves the question if it was a typo in the avs (problem solved) or the post (problem not solved) ^^


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Last edited by Soulhunter; 25th April 2006 at 02:25.
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Old 25th April 2006, 05:14   #18  |  Link
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for me frFun similar MSmooth, but easier (less parametrs) and faster
i.e. good planar denoiser for anime (becose anime have clear (sharp) borders, and frFun not spare blur (not excess clearance))
with temporal blur for background I have very good denoiser for very noise anime.

PS Excuse me my bad English

Last edited by AI; 25th April 2006 at 05:18.
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Old 27th April 2006, 06:18   #19  |  Link
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it should be called a video cleaner-improves videos from commercial vcds in the sense that it reduces artefacts quite a bit and lets you see more details than before.
I have couple of problematic clips from vcds which i keep trying with various filters. This one takes the cake.
Thanx
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Old 28th April 2006, 20:52   #20  |  Link
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I just tried this filter, and all I can say is "WOW!"
I've tried it on some anime clips that have heavy amounts of film grain, and it can totally remove the grain! its amazing! No other smoother I have tried seems to even come close to this. This thing is amazing at preserving edges as well. The only problem I see is that it does seem to heavily blur some things that are real detail, if they arent defined very well to begin with, such as some texture on the ground, walls, etc.
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