Log in

View Full Version : Noise in white logo


tormento
2nd September 2021, 16:52
I am getting crazy to get rid of some dancing noise in the first seconds (https://www.mediafire.com/file/94dus8yizriqm9a/The_lighthouse.7z/file) of The lighthouse movie.

Tried SMDegrain up to tr=9 and thsad=900 but results are really ugly.

Ideas?

videoh
2nd September 2021, 17:51
DGDenoise() # Keep it simple.

And what do you mean by ugly?

lollo2
2nd September 2021, 18:02
TemporalDegrain2()

kedautinh12
2nd September 2021, 18:34
TemporalDegrain2()

I moded TemporalDegrain2 use BM3D, details in description
https://github.com/kedaitinh12/AVSPlus-Plugins/blob/master/TemporalDegrain-v2.3.1MOD.avsi

lollo2
2nd September 2021, 18:55
Thanks!

poisondeathray
2nd September 2021, 20:44
What did you want exactly ? What did mean by "get rid of" ? Just to reduce noise ? But how much ? Or eliminate noise completely, as if it were a "clean graphic" ?

tormento
2nd September 2021, 21:44
And what do you mean by ugly?
Just to reduce noise?
Just try any filter and look at how bad the result looks. Perhaps it's because of the full white color.

Reel.Deel
2nd September 2021, 22:01
This script gets helps reduce the noise when the logo is not fading in or out.

DGSource("The lighthouse.dgi")
o = last
blank = Blankclip(o, color_yuv=$B4B4B4)
mask = o.ColorYUV(levels="TV->PC")

mt_merge(o, blank, mask)

If you really care you can copy one single frame from each logo and then match the frames and fade in and out as required and join them together.

videoh
2nd September 2021, 22:22
Just try any filter and look at how bad the result looks. Perhaps it's because of the full white color. What does bad mean? What is bad about DGDenoise() here? Looks fine to me. I second PDR; what are you shooting for?

poisondeathray
3rd September 2021, 05:31
Just try any filter and look at how bad the result looks. Perhaps it's because of the full white color.


What is "bad" ? It's means different things to different people

There is no "full white color" . Full white is Y=235 (or higher)

Or did you mean a solid uniform text color, like vector graphics ? Squeeky clean, such as 100% removal of noise? Like it was before the grain was added on purpose for the film ?



How is this "any filter" ? Vapoursynth DPIR. But it's slow.

https://www.mediafire.com/file/a1ogr5kycovcwoc/dpir_libx264_qp1.mp4/file

You can remove "noise" completely to make it look like clean graphic, or add back some % if you wanted to, or blend some % with original

But what Reel.Deel said - you can redo the titles pretty easily, and that takes out the film bounce (stabilize) while you're at it. eg. Take the output on a single frame per section as a "clean plate", and reapply the fades
https://www.mediafire.com/file/737y67opc35coik/dpir_fade_libx264_qp1.mp4/file

tormento
3rd September 2021, 09:34
Guys, please, show me your results and the script you used.

And, unfortunately, I don't use and don't want to start to use VS.

Reel.Deel
3rd September 2021, 10:24
Guys, please, show me your results and the script you used.

And, unfortunately, I don't use and don't want to start to use VS.

Speaking for my little script only, you can easily copy it and view the results yourself.