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Author Topic: Free Video Denoiser  (Read 974 times)
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Tom Dickerson
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« on: February 11, 2010, 08:57:48 AM »
Hi guys

I tried the demo download of Neat Video and it worked great. The demo version only does a 4:3 and watermarks it.  To purchase the home use version is $49 and the pro version is $99.

Before I dish out the $100 (which is legally what I would have to purchase), is there a free plug-in out there that will work with Adobe Premiere Elements?
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Guy Bruner
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« Reply #1 on: February 11, 2010, 11:35:50 AM »
Tom,
http://www.risingresearch.com/en/denoise/premiere/ isn't free but it is only $39.95.

You might find something here:
http://www.stevengotz.com/video.htm
http://thepluginsite.com/index.html
http://www.toolfarm.com/index.html
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Tom Dickerson
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« Reply #2 on: February 11, 2010, 01:01:31 PM »
Thanks Guy

I downloaded trial/demo versions of Rising research, Neat Video, and NewBlue FX Video Effects II for their de-noisers.

My evaluation was on a people walking down the isle in a dimly lit sanctuary. I first added about 3 db of gain before applying a "light" denoise effect from each.

The best seems to be Neat Video. 2nd place goes to newBlue FX, and 3rd to Rising Research.

Viewing in a small window Neat Video and NewBlue Effects seem close. However, when I go full screen the grain that's left dances more on the NewBlue Effects denoiser than the Neat Video. As a matter of fact, I am extremely impressed with the Neat Video version.

The NewBlue Effects version is close and is completely usable with no watermark for 10 days so I may go with it for now, but I think I'll look into the Neat Video a bit more before I place my order.
« Last Edit: February 11, 2010, 01:11:15 PM by Tom Dickerson » Logged
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« Reply #3 on: February 11, 2010, 02:43:31 PM »
A really knowledgeable man named John Meyer has posted his script for use with AVISynth (hacked for multicore) and the fft3dfilter.  Apparently, this is the tip top of denoising.  One caveat.  To use AVISynth, the files must be in .AVI format.  That's not a problem if you shot in DV.  For other formats, I recommend you transcode to uncompressed using Lagarith or HUFFYUV codecs before denoising.


Code:
#Denoising using fft3Dfilter, but without motion compensation, for interlaced video.
loadPlugin("c:\Program Files\AviSynth 2.5\plugins\CNR\Cnr2.dll")
loadPlugin("c:\Program Files\AviSynth 2.5\plugins\fft3dfilter.dll")

#Modify this to point to the video file you use.
source=AVISource("E:\frameserver.avi").KillAudio()

#Chroma denoising for VHS tapes (not needed for digital video)
chroma=source.Cnr2("oxx",8,16,191,100,255,32,255,false)

#The following is the usual setting
final=chroma.fft3dfilter(sigma=2, sigma2=3, sigma3=6, sigma4=10, bt=4, bw=16, bh=16, ow=8, oh=8, dehalo=0, sharpen=1, degrid=1,interlaced=true)

#These are additional settings that might be useful
#final=chroma.FFT3DFilter(sigma=2, sigma2=3, sigma3=6, sigma4=10, bt=4, bw=16, bh=16, ow=8, oh=8, dehalo=1, sharpen=1, degrid=1,interlaced=true)
#final=chroma.FFT3DFilter(sigma=3, sigma2=7, sigma3=12, sigma4=20, bt=4, bw=16, bh=16, ow=8, oh=8, dehalo=1, sharpen=1, interlaced=true)
#final=chroma.FFT3DFilter(sigma=3, sigma2=5, sigma3=10, sigma4=15, bt=4, bw=16, bh=16, ow=8, oh=8, dehalo=1, sharpen=1, degrid=1, interlaced=true)
#final=chroma.fft3dfilter(sigma=8, plane=0, bh=16, bw=16, ow=8, oh=8, sharpen=3, bt=3, interlaced=true)
#final=chroma.fft3dfilter(sigma=14, plane=0, sharpen=0, dehalo=1,interlaced=true)
#final=chroma.fft3dfilter(sigma=2, sigma2=10, sigma3=15, sigma4=8, plane=0, bt=3, bw=16, bh=16, ow=8, oh=8, dehalo=1, sharpen=1, smin=20, smax=1000, wintype=2, kratio=1.0, measure=true, interlaced=true, degrid=1)
#final=chroma.fft3dfilter(sigma=3, sigma2=7, sigma3=12, sigma4=20, plane=0, bt=3, bw=16, bh=16, ow=8, oh=8, dehalo=1, sharpen=0.5, smin=20, smax=1000, wintype=2, kratio=1.0, measure=true, interlaced=true, degrid=1)
#final=chroma.fft3dfilter(sigma=1.5, plane=0, sharpen=0.4, dehalo=1, wintype=2, bt=5, bw=32, bh=32, ow=16, oh=16, interlaced=true)

return final

Here is a link to another AVISynth smoother plugin Nomosmooth.

If you want to know more about AVISynth, check out doom9.org. Or go here.
« Last Edit: February 11, 2010, 03:35:53 PM by Guy Bruner » Logged
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« Reply #4 on: February 11, 2010, 03:39:56 PM »
Another technique that does not require using a separate program for removing noise/grain is to apply a small amount of motion blur and median filter then render the file out.

Because most noise is random, if you put two instances of your clip on different video tracks and apply a small amount of motion blur or gaussian blur to the upper track, the noise is reduced when you render out.
« Last Edit: February 11, 2010, 03:43:10 PM by Guy Bruner » Logged
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« Reply #5 on: February 13, 2010, 06:27:52 AM »
UPDATE:

After continued experiments, I sat my wife down to look at 3 samples of footage. I first played the Neat Video sample, then the NewBlue FX, then Guy Bruners method (read previous post).

She said go back to the first one, so I replayed it. She confirmed my opinion that Neat Video was substantially better than the others....

The wedding I recently shot had lots of issues with lighting. Although I believe the video is acceptable, I am trying to use this as a worst case scenario - but yet achieve producing a good video.  It's amazing what Neat Video did to one of the worst clips...as well as a scene with just a little grain. It really cleaned it up.

I'll be placing my order for Neat Video in the next day or two.
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« Reply #6 on: February 18, 2010, 08:43:11 AM »
Update to update:

I discovered that the NewBlue FX degrainer did strange things around the edges of the video frame. If someones hair was close, it made it look like the hair was standing up. I had to apply a 2% zoom to fix it.

I did not see the same issue with the Neat Video version.
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« Reply #7 on: March 04, 2010, 06:22:59 PM »
The best (truly) free denoiser I know of, and just plain one of the best, is MSU's for VirtualDub. You can download it here:

http://news.sel.sony.com/assets/

It's free for personal use. No watermarks, or any of that sort of thing. I suggest not using the GPU acceleration option though. It's fast, but can cause artifacts. Using the CPU only is slower, but the results are excellent.
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« Reply #8 on: March 05, 2010, 08:24:59 AM »
Perhaps you'd check that, Robert? Forbidden access...
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« Reply #9 on: March 05, 2010, 01:35:24 PM »
If you're interested granpa, try here http://compression.ru/video/denoising/index_en.html. Personally, I prefer this http://neuron2.net/hiq/smoothhiq.html

Dave
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granpa brian
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« Reply #10 on: March 05, 2010, 04:49:59 PM »
Thanks for that, Dave. Like you, I think I would opt for neuron2. Mainly because compression.ru seems to be written in Sanskrit (or perhaps it's Pre-Cambrian Cunieform).....

Seriously, thanks for useful pointer.
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