View Full Version : Filters for removing TV station interference
ppera2
26th August 2003, 13:47
I tried couple, and TemporalSmoother() had best results. It removed very well slow vertically moving darker-lighter waves on picture.
Too bad that this filter is removed from Mpeg2dec3.dll for AviSynth 2.5 .
But in some parts of capture, interference is too strong and picture shimmers left-right in waves (obviously sync. is disturbed). TemporalSmoother was unable to restore it. What filter can fix this? Perhaps some filter for VHS stabilizing could help here?
Malcolm
26th August 2003, 16:57
search for 'wnr' or 'wavelet noise reduction'. it works wonders! (is that correct english??)
bye,
Malcolm
P.S. You need SSE for that.
ppera2
26th August 2003, 18:48
Thanx, but it helped not.
I look for filter which can stabilize picture horizontally - by shift lines left-right for getting back normal picture.
Malcolm
27th August 2003, 09:02
Do you have a small sample clip?
ppera2
27th August 2003, 12:34
Here is one second sample - one is without filtering (119 KB):
http://www.pootnik.com/pic/FliNF.avi
and other is after TemporalSmoother (73 KB):
http://www.pootnik.com/pic/FliTS.avi
Just to mention that with stronger argument in Temporal Smoother picture goes to be little cleaner, but hor. waving remains, what is best visible at subtitles. 90% of movie is well cleaned.
Malcolm
27th August 2003, 13:47
i just checked the two clips. I would say, TemporalSmoother is doing a very good job here. I tried also wnr with your unfiltered clip. but i have to admit that wnr really isn't the right thing here. although i experienced great results with wnr in other cases where interferences not much different to yours were present.
as far as my knowledge goes i would say there's not much better filters out which can remove such things as interference-waves...
bye,
Malcolm
High Speed Dubb
29th August 2003, 07:02
Time for me to toot my own horn — That looks like a job for Peach Smoother. It tends to work well with regular interference patterns like your clip’s. (But that particular clip is very dark — Try starting the run on a brighter scene.)
vBulletin® v3.8.5, Copyright ©2000-2012, Jelsoft Enterprises Ltd.