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artifacts in motion with radius to 5 frames
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fenomeno83



Joined: 19 Jan 2007
Posts: 20

PostPosted: Fri Jan 19, 2007 6:45 pm    Post subject: artifacts in motion with radius to 5 frames Reply with quote

In my videos I use generally these settings:radius 5 frames,thresold 0%,adaptive filtration disabled,in configure crominance channels in noise reduction amount 100%,all rest 0%.
Results are fantastic but I have a problem in motion..radius to 5 frames generate a better denoise than 1 frame but I see motion artifacts(similar to motion blur).Any idea?
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NVTeam



Joined: 01 Sep 2005
Posts: 2237

PostPosted: Fri Jan 19, 2007 7:02 pm    Post subject: Reply with quote

Please make sure you build the noise profile correcty in the first place. Then try to reduce the radius to 4, 3, etc. to find the optimum value.

Vlad
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fenomeno83



Joined: 19 Jan 2007
Posts: 20

PostPosted: Sat Jan 20, 2007 12:34 am    Post subject: Reply with quote

here there is an example with original video and 1,2,3,4 and 5 radius.I prefer radius 2.Look at the hand:there are motion artefacts.
http://www.yourfilelink.com/get.php?fid=265625
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NVTeam



Joined: 01 Sep 2005
Posts: 2237

PostPosted: Sat Jan 20, 2007 1:24 am    Post subject: Reply with quote

Yes, I can see ghosting in your filtered clips, but I cannot reproduce this effect if I simply open the original clip in VirtualDub, build a noise profile correcly (using a part of the wall as a noise sample) and apply filtration with radius 5. No ghosting at all.

I guess you may be building the noise profile in a wrong way. Please let me know which part of a frame you use for analysis and send me the profile you have built. I think the issue may caused by using an inaccurate profile.

Another possibility - a problem with compression codec. Try to filter without compression for a test.

Vlad

P.S. TotÚ? Smile
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fenomeno83



Joined: 19 Jan 2007
Posts: 20

PostPosted: Sat Jan 20, 2007 1:35 am    Post subject: Reply with quote

But must I search an uniform area more than 128x128?
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NVTeam



Joined: 01 Sep 2005
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PostPosted: Sat Jan 20, 2007 1:46 am    Post subject: Reply with quote

No, it can be smaller.
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fenomeno83



Joined: 19 Jan 2007
Posts: 20

PostPosted: Sat Jan 20, 2007 2:02 am    Post subject: Reply with quote

I try with a select uniform area and profile applied.videos not blurred,hasn't motion artefacts,but there are new random noise!!
http://www.yourfilelink.com/get.php?fid=265700
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NVTeam



Joined: 01 Sep 2005
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PostPosted: Sat Jan 20, 2007 2:10 am    Post subject: Reply with quote

New random noise? Do you mean there is no noise in the original and there is new noise in the filtered clip?
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fenomeno83



Joined: 19 Jan 2007
Posts: 20

PostPosted: Sat Jan 20, 2007 9:58 am    Post subject: Reply with quote

excuse me..these noise are in original video.but neatvideo became crazy!!!Now there isn't motion artifacts,but same noises arent't removed!!!After than I use "select area option"neatvideo became crazy!!I try to reconvert with radius 5 frames,thresold 0%,adaptive filtration disabled,in configure crominance channels in noise reduction amount 100%,all rest 0%(without area selection) but result is different from before!!!Here there is an example(before I use select area option and after).I try to uninstall e remove all registry voices,I try in 2 different PC,but doesn't remove all noise!!!
Example: http://www.yourfilelink.com/get.php?fid=266067
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NVTeam



Joined: 01 Sep 2005
Posts: 2237

PostPosted: Sat Jan 20, 2007 10:24 am    Post subject: Reply with quote

fenomeno83 wrote:
excuse me..these noise are in original video.but neatvideo became crazy!!!Now there isn't motion artifacts

So, artifacts were caused by incorrect profiling. How did you build the noise profile you used?

fenomeno83 wrote:
but same noises arent't removed!!!

With an incorrect profile, you removed too much, with (I hope) a more accurate profile you remove less. How did you build it? Which image area did you select to analyze with Auto Profile?

fenomeno83 wrote:
I try to uninstall e remove all registry voices,I try in 2 different PC,but doesn't remove all noise!!!

I would start by resetting all filter settings to their defaults. Then I would try to build an accurate profile according to the user guide and use the preview inside the plug-in to make sure you get the desired level of filtration within one frame. Do not adjust the filter, but build an accurate profile instead, this will lead to accurate filitration.
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fenomeno83



Joined: 19 Jan 2007
Posts: 20

PostPosted: Sat Jan 20, 2007 11:17 am    Post subject: Reply with quote

here there are screenshot of my step:
http://www.yourfilelink.com/get.php?fid=266150

PS:Why before noises were all delete(but there were motion artifacts) and now with the same profile I can't remove all noises(but I haven't motion artifacts problem!!)?This is incredibile!!!


Last edited by fenomeno83 on Sat Jan 20, 2007 11:25 am; edited 1 time in total
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NVTeam



Joined: 01 Sep 2005
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PostPosted: Sat Jan 20, 2007 11:23 am    Post subject: Reply with quote

Looks good. I can see good noise reduction in the filtered version.
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fenomeno83



Joined: 19 Jan 2007
Posts: 20

PostPosted: Sat Jan 20, 2007 11:27 am    Post subject: Reply with quote

yes,but before all noise were removed(now same noise aren't removed!!).But before I had motion artifacts problem and now I haven't these problems
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NVTeam



Joined: 01 Sep 2005
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PostPosted: Sat Jan 20, 2007 11:31 am    Post subject: Reply with quote

Are you sure it was noise that was removed before and is now removed now? - Perhaps you mean the dust and scratches, not really noise?
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fenomeno83



Joined: 19 Jan 2007
Posts: 20

PostPosted: Sat Jan 20, 2007 11:42 am    Post subject: Reply with quote

here there is an example with before and after:
http://www.yourfilelink.com/get.php?fid=266067
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