Quantcast Avisynth: What Filters Now? - digitalFAQ.com Forums [Archives]
  #1  
10-17-2003, 08:31 PM
muhali3 muhali3 is offline
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I'm encoding resident evil over again and i just want to know what filters i should use now to clean up the picture even more.



you can see alot of detail loss and alot of noise, so could you guys suggest what i should take out and what i should put in?

This is the script i'm already using on it:

AviSource("C:\unzipped\movies/resident evil.avi", false)
LanczosResize(352, 334, 4, 0, 568, 304)
BlindPP(cpu=4)
Deen("a3d",1,12,14)
Undot()
ATC(2,3,5,0.5,false)
TemporalSoften(2,7,7,3,2)
MergeChroma(blur(1.57))
Asharp(1,4)
AddBorders(8, 73, 8, 73)
DCTFilter(1,1,1,1,1,1,0.5,0)
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  #2  
10-17-2003, 08:45 PM
jorel jorel is offline
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hy muhali3 !

parameters:
deen(string "name",int "mode",int "thrY",int "thrUV", float "ti")

i'm testing:
deen("a3d",3,4,1,4) # light cleaning
deen("a3d",3,6,1,6) # medium cleaning
deen("a3d",4,9,1,9) # heavy cleaning

choose and do little samples and see if this can help!
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  #3  
10-17-2003, 09:04 PM
incredible incredible is offline
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Hi Muhali

Well, I think I do not see a very lot of noise. I see a lot of artefacts and that your cleaning routine already plain'ed a little too much as you can see in the hair of the guy shown there. Artefacts are different than noise. Noise is smaller much more in motion where artefacts are bigger and sometimes slower in their motion, thats why its difficult for the cleaner to see them and handle them as "noise".
At the second look I see that it seems a bit oversharpened... this will also accent the artefacts again.
Also try to do the resize without lanczos cause this also will the cleaners work harder. Just try maybe it helps a bit.
You dont need to perform such a sharpen to end up with a very sharpen picture you can see on your pc screen. Its enough if the details come out and that it doesn't look soft. Watch some orig. good mastered DVDs on your PC they won't appear that sharp.

BTW: It seems that you calculated a wrong aspect ratio...
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  #4  
10-17-2003, 09:45 PM
muhali3 muhali3 is offline
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yeah. i know my aspect ratio is messed up. i guess i didn't know the difference between artifacts and noise. ok whatever ill try what you guys said.

and jorel i left out the temporal influence in deen purposely.

Thanks
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  #5  
10-18-2003, 04:34 AM
Dialhot Dialhot is offline
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Quote:
Originally Posted by muhali3
and jorel i left out the temporal influence in deen purposely.
So you have ti use "a2d" and not "a3d" ! 3d means 3-dimentionnal : x / y / time. In other words spatio-temporal filtering.

Now, if you find you loose to much details, I strongly recommen you to make test with vaguedenoiser.
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  #6  
10-18-2003, 09:16 AM
muhali3 muhali3 is offline
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thanks for telling me that dialhot. I'll try VagueDenoiser, but i've heard it takes very long.
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  #7  
10-18-2003, 09:38 AM
Dialhot Dialhot is offline
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Quote:
Originally Posted by muhali3
thanks for telling me that dialhot. I'll try VagueDenoiser, but i've heard it takes very long.
That's urban legend

It takes 15% more than deen. And between "deen" and "vaguedenoiser" results, the choice is fast !
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  #8  
10-18-2003, 01:04 PM
muhali3 muhali3 is offline
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i've tried vaguedenoiser and resized it to 480x480,and the results are good, but now this is the problem.



see all those purple and blue blocks. I don't know how to get rid of them. when i check output as YUV in TMPGEnc, it reduces the blockage , but it's still there.

hope you guys can help.
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  #9  
10-18-2003, 01:10 PM
Dialhot Dialhot is offline
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These are due to CQ too low. What is the CQ value you use ?
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  #10  
10-18-2003, 01:14 PM
muhali3 muhali3 is offline
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75.34, i'll see if it changes with a higher cq.
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  #11  
10-18-2003, 01:24 PM
muhali3 muhali3 is offline
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nope, i used a cq of 100, and it looks more blocky than before




maybe it's because blindpp and dctfilter?
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  #12  
10-18-2003, 01:32 PM
Dialhot Dialhot is offline
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For sure not !
The problem is in the order of the filters inyour script. Please go to the avi->kvcd forum to see the correct optimal script you should use.

And PLEASE : stop posting here, it is not the correct forum and according to forum rules, this thread should have been deleted yet.
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  #13  
10-18-2003, 01:44 PM
incredible incredible is offline
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Dialhot...

I don't know exactly how his script does look like now but in deed it seems to me that vaguedenoiser is able to produce artefacts.
Not at all like the detailed blocknoise above but on very noisy pictures the "cleaned" surfaces in the movie appear "fidgety".

I answered your post in the "How funny" Thread by posting some samples as you wished, handled at real 704x576 and also vaguedenoiser at 352x576-704x576!

See ya there
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  #14  
10-18-2003, 02:09 PM
Dialhot Dialhot is offline
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Quote:
Originally Posted by incredible
Not at all like the detailed blocknoise above but on very noisy pictures the "cleaned" surfaces in the movie appear "fidgety"
In that case (that I never had) I think that you have to turn of the work of vaguedenoiser on the chroma using the parameter "chroma=false".
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