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View Full Version : Trouble eliminatating large 1 frame dots


angelyote
28th December 2002, 21:50
Hi all,

The source I'm trying to encode is rather poor and I get random dots appearing on frames, for only a single frame. Attached is an example. (I have compressed the image to jpg to save on bandwidth)

I can't seem to remove these dots. I'm tried a lot of temporal filters with everything from smallish values to image destryoing values and none of them seem to touch it.

Should I be using something other than temporal filters for these largish kind of dots that blink in, then blink out?

Thanks!
Dave

sh0dan
28th December 2002, 23:19
You could try the "sandwich" filter posted here some time ago.

angelyote
29th December 2002, 11:12
Thanks for pointing me that way sh0dan.

I gave it a try and it did a good job of removing most of those dots but it also caused a tremendous amount of artifacts whenever any sort of contrasting colors moved against each other.

So all in all it seems better to live with the dots. Maybe I can say they add a certain nostalgic charm... ;)

Thanks again,
Dave

ErMaC
29th December 2002, 11:59
You could try SansGrip's FluxSmooth - from my understanding of the algorithm it could help remove those pixels?