"Snow" like noise [Archive]

Bardez

15th August 2003, 23:10

any ideas on how to preserve quality, yet rid of this (http://www.ilstu.edu/~epfrant/problem.jpg)problem?

Something like analysing the surrounding frames or the like, or do any such intended methods exist

KpeX

16th August 2003, 00:34

There is no way to totally preserve quality and smooth out the image - IMHO you could try Undot (http://www.avisynth.org/users/warpenterprises/files/undot_25_dll_20030118.zip), which will preserve a high amount of quality, but I'm not sure it will remove all the noise there. If noise still remains, try something a little stronger like maybe Convolution3D (http://www.avisynth.org/users/warpenterprises/files/convolution3dyv12_25_dll_20030329.zip). hth,

16th August 2003, 01:01

The picture looks as if it could also benefit from some colour shifting (http://geocities.com/siwalters_uk/chromashift.html)

regards
Simon

Kika

16th August 2003, 01:55

Yeah, there are many problems with that Pic. Color Shifting, heavy noise and the Pic is very unsharp. Might be not easy, to get a good Video out if source like this.

Bardez

16th August 2003, 02:04

Thanks for your recommendations guys. This is about the average quality of cable here on campus, so I'm just trying to get feelers as to whether I should bother capping for the next 9 months :rolleyes:

Kika

16th August 2003, 02:30

THAT's the quality of your Cable-TV? :(
I thought, it was from a poor VHS-Tape...
That's a terible bad quality. I suggest you to try, what Siwalters wrote: Give Chromashift a try and also 2D-Cleaner.

morsa

17th August 2003, 00:11

Conditional temporal median filter should help to correct this problem.Test it.

lamer_de

17th August 2003, 13:29

I think I saw a filter from Neuron2 for removing those "fishs". It was posted some time ago on this board. I have no clue what search parameters I should use to dig it up again, though. Maybe you want to visit his board?

But with that amount of image distortions, I'll be very hard to achieve a good result.

CU,
lamer_de

Dreassica

17th August 2003, 14:07

U are talking about the Declick filter here. It can be downloaded from Neuron site, i believe.

High Speed Dubb

18th August 2003, 08:11

I’m with morsa — This looks like a job for a median filter.