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Old 30th August 2013, 21:42   #1  |  Link
MirMika
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Anti aliasing help

Hi. I'm trying to remove aliasing from my source but I'm not being well succeeded. The only way I can remove it is using Sangnom() but I lose a lot of details. I've tried a lot of others anti aliasing filters but with no success. Check the screenshot comparison above to see before and after Sangnom().

http://screenshotcomparison.com/comparison/39036

Check the car and the wall. Most of the aliasing is removed but the detail loss is noticeable in the poster in the wall.

Any tip? Ty in advance.
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Old 30th August 2013, 22:46   #2  |  Link
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What is the source and where did you get it?
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Old 30th August 2013, 23:16   #3  |  Link
creaothceann
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Well, at least the anime is "Paranoia Agent" (ep.01 "Enter Lil' Slugger"), which was only released on DVD.

I'd just use the AnimeIVTC package.


EDIT: BD? Oh, didn't know about that... interesting.

Last edited by creaothceann; 30th August 2013 at 23:44.
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Old 30th August 2013, 23:34   #4  |  Link
MirMika
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The source is this http://www.amazon.com/Paranoia-Agent.../dp/B0053EHQD2
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Old 31st August 2013, 00:16   #5  |  Link
Stereodude
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Post your AVIsynth script!
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Old 31st August 2013, 00:35   #6  |  Link
MirMika
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Code:
AVCSource("C:\Users\Micael\Desktop\Encode\video.dga")
SMDegrain(tr=2,thSAD=110,prefilter=2,refinemotion=true,lsb=true,chroma=false,plane=0)
LSFmod(strength=200,preblur="ON",ss_x=1.60,ss_y=1.60)
HQDering()
Sangnom()
Crop(2,4,-4,-2)
Spline36Resize(1280,720)
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Old 31st August 2013, 03:36   #7  |  Link
Stereodude
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Can you post a screenshot from your source (completely unprocessed) for the same frame as you have in your comparison above?

It seems like your source only has half the "fields" it should, but has duplicated them.
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Old 31st August 2013, 04:48   #8  |  Link
MirMika
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Here it is http://i.imgur.com/j98Gluu.jpg
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Old 31st August 2013, 14:45   #9  |  Link
Stereodude
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Yikes... I'm not exactly sure how you fix that. Hopefully someone else can chime in and help you.
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Old 31st August 2013, 16:38   #10  |  Link
Didée
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Wonderful HD. The effective resolution in that frame is 720x240.

To work on the issue, you first would have to reduce frame resolution to 720x480 again, because that is the pixel resolution where the issue originally has been introduced. And since it is badly deinterlaced SD, in fact 720x240 is all that the source has to offer. Poof, forget about this being HD. It just isn't. Resolution-wise it's just cheaply blown-up SD.


Code:
XYZsource("The-BD-that-was-cheaply-upscaled-from-poorly-deinterlaced-SD")

lanczosresize(720,480)
daa3()
nnedi3_rpow2(2,cshift="spline36resize",fwidth=1280,fheight=720)
Something like that. One problem is that the upscale did some minor scaling or cropping on the y-axis -- after plain downscaling, playing with even/odd-deinterlacing reveals that the "true" resolution is not strictly in one field, but spread over both even & odd fields. Therefore daa3, which 'inherently' respects the issue, by averaging even- and odd- interpolation. If someone instead wants to figure the defacto used scaling/cropping on the y-axis, go ahead.
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Old 31st August 2013, 17:10   #11  |  Link
creaothceann
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So one may get better results by getting the DVD instead?
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Old 31st August 2013, 22:34   #12  |  Link
MirMika
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Thank you very much Didée, your solution solved the problem.

creaothceann now I'll to have to use the BD xD
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