GREYCstoration

AlanHK · 6th March 2007, 14:23

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?

smok3 · 6th March 2007, 14:30

what example do you find amazing? url please.

Mug Funky · 6th March 2007, 14:31

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.

foxyshadis · 6th March 2007, 15:17

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.

*.mp4 guy · 6th March 2007, 21:06

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.

Fizick · 8th January 2008, 00:30

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)

MfA · 8th January 2008, 02:11

The problem with it's inpainting is that it can only really evolve smooth gradients and lines ... it can't extend texture.

Fizick · 13th January 2008, 23:46

Anyway, I release first (or last?) publc beta v.0.1 of GreyC plugin with GreycBlur, GreycInpaint, GreycResize functions

levi · 19th October 2009, 04:12

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.

6th March 2007, 14:23	#1 \| Link
AlanHK Registered User Join Date: May 2006 Posts: 237	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?

6th March 2007, 14:31	#3 \| Link
Mug Funky interlace this! Join Date: Jun 2003 Location: i'm in ur transfers, addin noise Posts: 4,555	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. __________________ sucking the life out of your videos since 2004

6th March 2007, 15:17	#4 \| Link
foxyshadis Angel of Night Join Date: Nov 2004 Location: Tangled in the silks Posts: 9,567	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. Last edited by foxyshadis; 6th March 2007 at 15:39.

8th January 2008, 00:30	#6 \| Link
Fizick AviSynth plugger Join Date: Nov 2003 Location: Russia Posts: 2,182	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) __________________ My Avisynth plugins are now at http://avisynth.org.ru and mirror at http://avisynth.nl/users/fizick I usually do not provide a technical support in private messages.

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6th March 2007, 14:30	#2 \| Link
smok3 brontosaurusrex Join Date: Oct 2001 Posts: 2,392	what example do you find amazing? url please.

6th March 2007, 21:06	#5 \| Link
*.mp4 guy Registered User Join Date: Feb 2004 Location: USA Posts: 1,348	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.

8th January 2008, 02:11	#7 \| Link
MfA Registered User Join Date: Mar 2002 Posts: 1,075	The problem with it's inpainting is that it can only really evolve smooth gradients and lines ... it can't extend texture.

13th January 2008, 23:46	#8 \| Link
Fizick AviSynth plugger Join Date: Nov 2003 Location: Russia Posts: 2,182	Anyway, I release first (or last?) publc beta v.0.1 of GreyC plugin with GreycBlur, GreycInpaint, GreycResize functions

19th October 2009, 04:12	#9 \| Link
levi Registered User Join Date: Mar 2003 Posts: 116	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.