Filter to clean up a noisy source with MA script?
I'm trying to encode "Deliverance" and since it's an old movie (1972) it's quite noisy. Hence I'm having trouble with getting a high CQ value. What filter can I use to clean up the movie? Please, let me know what filter to use, settings and placement in the script.
|
In the MA Script you can find a Line including STMedianFilter.
Just change it to Deen() (download Deen() via Warpenterprises) or change to TemporalSoften(2, 10, 10, 15, 2) (No Filter download necessary, included in MPEG2Dec3.dll) Its heavy but you will kill noise. On the other Hand many details will be lost, for exampe killed structures in Hairs or flat surfaces in Skins. TemporalSoften for me is the best compromise cause - Its fast - Its the Filter which keeps the most details when doing a "normal, not to heavy" denoise But if set to heavy, the Picture in Surfaces will look like viewed through a Glass with "static" Dots. So watch out! So use MA like this: Code:
## Defined Variables and Constants ## If you lost to much details just change to TemporalSoften(1, 8, 8, 15, 2) The undot() is put behind TemporalSoften to eliminate a little bit the mentioned "viewed through a Glass with static dots" effect. The Threshold of Asharp is set to (1, 2) to avoid sharpen more the noisy surfaces in the movie. BUT! If someone can tell me how to configure TemporalSoften in the MA Routine that it handles the "static" Scenes more heavy with individual parameters ... let me know! Makes more sense. Just to avoid the double filtering. Like this? Code:
TemporalSoften( fmin( round(3/nf), 6), round(2/nf) , round(3/nf) , 1, 2) ") Well I'll try some settings at Weekend. |
I would leave the "temporal" values out completely in STMedian and increase the "spatial" values :!:
Use only the "spatial" values, and not "a-la-adaptive", but use it statically. You want to kill noise spots, which are (ideally) different from frame to frame. So what is really needed is strong "spatial" filtering. Not "temporal" filtering. -kwag |
Thanks guys!
@kwag Could you please point me int the right direction on the spatial filtering? Shall I keep the temporal values, and what are good starting values for the spatial filtering? :roll: This movie (Deliverance) is in bad need of a clean up. It's very noisy/pixelated. |
Quote:
:banghead: |
Quote:
Quote:
It's two completely different things :!: -kwag |
Quote:
|
Oh, sorry. I ment to say noisy. :oops:
|
What are my options on STMedian filter? I mean what's the range of values for parameter 3 and 4, and what do they do?
|
STMedianFilter(S_FilterThreshHold, S_EdgeThreshHold, T_FilterThreshHold, T_MotionThreshHold)
Tom Barry: Quote:
|
does deen act as a spatial-temporal smoother. or just spatial?
what exactly does it do? i've read the documentation that came along with it, but it doesn't exactly say what it does. Thanks :twisted: |
Deen is a Spatial only filter.
|
Well, now I've tried encoding with Deen() but I only gain 2-3 in CQ. "Deliverance" is about 1:45 long and I usually get a CQ around 70 for this kind of movies. In this case the CQ stops at around 56 :!:
Can someone please post good settings for STMedian (spatial values) to use for low, medium, and high noise sources? |
Are you sure your problem doesn't come from a source too sharpen ?
It's strange that you gain so little CQ on the video. Deen is quite heavy in noise removing. Try this : deen("a2d",2,10,12) (note: oops, I said an error last time, by default deen is a Spatio-Temporal filter using a 3d matrix. For Spatial only filtering you have to use the line suggested above). Finally, I can suggest you eDeen that is heavier than deen. Ps:For the values of StMEdian, why don't you do some test and give results there ? |
@Dialhot
I don't know. I'm using the MAscript and it has always worked before, on other movies. Maybe I could try increasing the LumaBlur? Or do you have any other suggestions? |
I edited my post while you were answering. See the suggestion I do in it :-)
|
Where can I find eDeen?
EDIT: Now that I think of it the DVD seems like it is over sharpened. Almost like when you apply too much sharpen filter in Photoshop, if you know what I mean? |
|
Thanx :wink: :D
|
You can soften it with unfilter (that is its original purpose). Or as you suggested raise a little the blur on the luma.
|
Site design, images and content © 2002-2024 The Digital FAQ, www.digitalFAQ.com
Forum Software by vBulletin · Copyright © 2024 Jelsoft Enterprises Ltd.