HF100 HD noise footage

[Gannjunior]

This a native (1920x1080) HF100 footage
Shot at F1.8, 1/25 and max gain (+18db).
In a room with 20w light...

-> http://www.megaupload.com/?d=YDM37LPO

There are a good amount of details and colour but there are also many noise.
I tried many filters that work for me very well in DVD standard definition and that i always used with great satisfaction to denoise VHS...( dust, peachsmoother, pixiedustpp, HQDN3D, etc...and i also tested removegrainHD by kassandro that should be specific for hd content)...but i'm not satisfied..In particular from 700 frames in forward where there is the contrast between the small "doraemon" and the background...
I would like maximum denoise, keeping off course decent details.

Any idea of some specific filter or a combination too...?

thanks in advance.

ciao!!!:)

[Sagekilla]

I'll take a look proper when I'm on my own computer (On university computer) but you can try good old... you guessed it, MVDegrain. Doesn't produce much artifacts at all for me and does a nice job of cleaning things up :)

Try that first and see if it works; the more vectors you use, the stronger the denoising.

[WorBry]

You might tell folks that this is AVCHD footage. Looks like 25p, or more accurately 25PsF (i.e. progressive segmented frames in a TFF interlace wrapper). Of course at 1/25 sec shutter there's a fair amount of motion blur to contend with, but I'd agree with Sagekilla, MVDegrain is probably your best bet.

[Didée]

Small note, MVDegrain likely will not help much with those color blotches. FFT3DFilter usually deals reasonably with those. Tried (sigma=8,bw=64,bh=64,ow=32,oh=32,bt=3,plane=3), and colors were much cleaner. Needs to increase saturation after that, though.

[Sagekilla]

Didee, wouldn't it be better to increase sigma3 and sigma4 to higher values and set sigma1 and sigma2 to lower values? If I understand correctly, sigma4 will filter low frequencies and sigma the high frequencies. Then, wouldn't huge patches be considered part of the low frequencies?

[Blue_MiSfit]

Yes! I also prescribe a high dosage of fft3dfilter. Large sigmas, large block sizes, and GPU acceleration if you can do it!

~MiSfit

[Pookie]

Lots of color noise due to low light and the autogain control on the camera. I recommend a VirtualDub filter called Camcorder Color Denoise. It won't get rid of everything, but it will get rid of a lot of the chroma noise out of there without disturbing the sharpness of the image (too much).

Download it here:

http://acobw.narod.ru/

If you want to use it as an Avisynth plugin, do this:

LoadVirtualDubPlugin("CCD.VDF", "CCD",0)
DirectShowSource (or Avcsource)
ConvertToRGB32()
ccd(85) #up to 100 in strength, I believe

Even better would be to illuminate the scene when you're shooting. It's no fun doing noise reduction on HD resolution material. :) Do a search on "Exposure Lock Trick" . There are many instructions on how to do it with the Canon HV30, I'm sure it can be applied to the HF100. Here's a demonstration of before and after:
http://www.hv20.com/showthread.php?t=4049

[Sagekilla]

One other thing you can try is MergeChroma(source,denoise) where denoise is a heavily filtered version of the frame. That should get rid of the chroma which, IMO, is the most annoying kind of noise. If you use any denoisers that don't have plane independent filtering, you can just use that.

[Gannjunior]

First: MANY THANKS to everyone :)

I did all attempts.
But i'm not completely satisfied of nothing... :confused:
Too much "bad" grains remains...I "like" sometimes a little bit of grain but not that!
CCD it doesn't do better than the other but i've seen that, at least, it reduces considerably the saturation (i mean the quantity of bitrate...) level of clip.

Pookie i know the gain trick and i use it if i can but sometimes you have to force gain..

ciao!!!

[Undead Sega]

Have you tried the 'Cell Phone Trick' ?

it is used to help elimate grain prior to filming.

[2Bdecided]

NeatVideo?

With a suitable noise sample, and with "very low frequency" enabled, it can kill blotches nicely. Don't enable it's temporal stuff though - it's not as good as mo-comped AVIsynth stuff.

It's not quick, and misuse can easily eat detail. Just like all your other options.

Cheers,
David.

[Gannjunior]

@undead sega
yes, when i can, i usually use it!!

@2bdecided

oh...GREAT!!
i knew neatimage that I use in photoshop..but i didn't knew the neatvideo for video!!
i tried it! there is also a vdf for virtualdub...it does a really nice job, especially with a LSF by Didè after it...
thanks!!!