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View Full Version : Suggestions for dealing with random color noise


Brassplyer
23rd December 2013, 03:49
Things like this - color noise "flames" that change from frame to frame. A couple of sample frames and a link to a 3 sec lagarith example on Google Drive. I appreciate all input.

http://forum.videohelp.com/attachment.php?attachmentid=22301&d=1387731406

http://forum.videohelp.com/attachment.php?attachmentid=22302&d=1387731421

I've found that some people have problems with seeing the download links on Google Drive because of browser security settings. The links are at the upper left of the page.

https://drive.google.com/file/d/0B0zvAZXgfLgiVkpFM3pHM0sxa2c/edit?usp=sharing

raffriff42
2nd January 2014, 23:48
Most of the noise is in the Blue channel, so I blurred it very aggressively.AviSource("colornoise.avi")
ConvertToRGB32

B = ShowBlue.ConvertToY8
h2 = B.Height/20
B2 = B.BilinearResize(B.Width, h2 + (h2 % 2))
\ .TemporalSoften(5, 92, 128, 128)
\ .BilinearResize(B.Width, B.Height)

MergeRGB(ShowRed, ShowGreen, B2)
ConvertToYV12
TemporalSoften(3, 92, 128, 128)
https://www.dropbox.com/s/rjp1sz07hmn3thi/colornoise-fix2b.jpg?raw=1

Reel.Deel
3rd January 2014, 02:09
@raffriff42

...
B = ShowBlue("Y8")
...

It's considered to be better (http://forum.doom9.org/showthread.php?p=1621991#post1621991).

raffriff42
3rd January 2014, 03:49
Aha, thanks!