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Old 6th March 2007, 14:23   #1  |  Link
AlanHK
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GREYCstoration

I just saw a story about GREYCstoration, an "Open source algorithm for image denoising and interpolation,
using state-of-the-art image processing techniques."

The examples they give are pretty amazing. If it's at all practical for video, it could replace just about every filter, from resize to delogo.

It's open source, so who will turn this into an Avisyth filter for me?
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Old 6th March 2007, 14:30   #2  |  Link
smok3
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what example do you find amazing? url please.
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Old 6th March 2007, 14:31   #3  |  Link
Mug Funky
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bah. looks too smooth. you could get a similar effect with existing avs filters.

mvdegrain is just about the state of denoising for film/video at the moment. spatial-only algos don't lend themselves to motion very well, especially when edge-direction and such start happening - often the artefacts left behind are more visible than a little noise.
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Old 6th March 2007, 15:17   #4  |  Link
foxyshadis
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Neat, they put up more samples.

It's not bad for heavily damaged photos and art, it's one of the tools I keep around for that. (Avisynth is much more versatile but it doesn't cope as well with the worst stuff, some pre-processing goes a long way.) In general it's not very suited to anything that needs a lighter touch. It's also obnoxiously slow. But when you need it, it does a great job.

There are also a couple of GUIs that make it a easier to use.

Logo removal is the one place it could offer something genuinely better than what's out now, so maybe someday I'll incorporate it into an avisynth plugin, just to see if it really works.
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Old 6th March 2007, 21:06   #5  |  Link
*.mp4 guy
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FrFun7 can be used to get very similar effects in avisynth, it doesn't work aswell on really large noise, but it works similarly/better on high frequency noise.
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Old 8th January 2008, 00:30   #6  |  Link
Fizick
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I try port it to Avisynth. But it is too slow. and I now am not very excited with inpaint mode.
Anyway, if somebody interested, I can release current beta (alpha)
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Old 8th January 2008, 02:11   #7  |  Link
MfA
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The problem with it's inpainting is that it can only really evolve smooth gradients and lines ... it can't extend texture.
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Old 13th January 2008, 23:46   #8  |  Link
Fizick
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Anyway, I release first (or last?) publc beta v.0.1 of GreyC plugin with GreycBlur, GreycInpaint, GreycResize functions
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Old 19th October 2009, 04:12   #9  |  Link
levi
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It's near Halloween, so i assume thread resurrection is ok. I found this to be magic for extremely poor sources. Just wanted to say thanks for porting this.
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