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Old 4th August 2020, 10:14   #1  |  Link
PurpleKnight
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Join Date: May 2019
Posts: 4
Is this anime noise?

I've been using noise reduction scripts and I couldn't improve the image to much, maybe I need to use a heavy denoiser or adjust some settings. I even thought this was some kind of dithering or banding.
I would greatly appreciate any advice.





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Last edited by PurpleKnight; 4th August 2020 at 10:17. Reason: Removing unnecessary text (leftover introduction)
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Old 4th August 2020, 13:00   #2  |  Link
ChaosKing
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Location: Germany
Posts: 1,468
I don't really see any noise. But banding and some light compression artifacts and maybe some halos.
Try f3kdb / neo f3kdb
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Old 25th August 2020, 16:04   #3  |  Link
Macross96
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Progress...

I used the idea behind fag3kdb and ported it to avisynth.
Here's how I wrote it for this occasion
Quote:
z_ConvertFormat(pixel_type="YUV444P16",resample_filter_uv="spline36",dither_type="none")

masking = ConvertToStacked().GradFun3(thr=0.8, thrC=0.5, smode=3, lsb_in=true, lsb=true, debug=1)
\ .ConvertFromStacked()

filtered= neo_f3kdb(range=31, grainY=45, grainC=45, blur_first=true,
\ dynamic_grain=false, keep_tv_range=true)

mt_merge(filtered, last, masking, Y=3, U=3, V=3).ConvertToStacked()

DitherPost()

(Note: source is yv12)
The results are nice (and are improveable)... yet, I really don't know what to do about the light compression artifacts (and haven't find something significantly helpfulf)




Last edited by Macross96; 27th August 2020 at 08:09. Reason: Spelling and more redaction corrections
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anime, banding, noise reduction, restoration, waifu2x

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