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View Full Version : Which filter for noisy capture?


Singh00
27th October 2004, 03:17
Hey, I've got an mpeg recorded from tv with some pretty bad noise in it. I'm not sure exactly how to clean it up. I've tried dynamic noise reduction and 2d cleaner in virtualdub, but neither worked. Does anyone know which filter I can use with vitualdub, avisynth, something else? Here's a screenshot of what I'm dealing with. The dots jump around pretty fast, but stay localized to the bands that are evident. Also, the bands move up the screen, keeping the same distance from each other, and eventually appear out of the bottom again.

http://img49.exs.cx/img49/1416/noise1.jpg

Singh00
27th October 2004, 04:04
Note: The jpeg doesnt really show the dots well. They are actually much sharper, and are pure white.

Manao
27th October 2004, 08:17
Use a median filter : http://forum.doom9.org/showthread.php?s=&threadid=83883

Fizick
27th October 2004, 21:42
Singh00,
try Despot, may be with DePan.

Mug Funky
28th October 2004, 16:32
also, turn your DVD player off next time :)

i got the exact same pattern when i had my Toshiba DVD player sitting on top of my VCR. other things can cause it too.

yeah. i'd say bob that, then run despot on it. the spots are per-field aren't they?

Singh00
29th October 2004, 03:04
Thanks to everyone for the advice. The picture is nice and clean now.