View Single Post
Old 3rd January 2002, 19:29   #11  |  Link
b0b0b0b
Registered User
 
b0b0b0b's Avatar
 
Join Date: Oct 2001
Posts: 261
I can see how smoothing might help with a noisy source.

But if you have a clean source, aren't you just creating ghosting??

I don't buy it. Has anyone compared the compressibility of something with and without temporal smoothing? Assuming noise is out of the picture, isn't it unclear what the relationship between the amount of smoothing and the compressibility is?

I think an interesting experiment related to temporal smoothing would be to interpolate the motion vectors between resulting mpeg-4 frames to generate in-between frames. You could use bilinear, trilinear, or any interpolation algorithm really. The question is whether you end up with more perceived detail and better pans. Of course this is useful only for folks with high refresh rate display devices.

Edit:

I just realized that in many dvd's you can see evidence of film grain. I can see how tempsmoothing (w or w/o resizing) definitely would help with that.

Last edited by b0b0b0b; 3rd January 2002 at 19:32.
b0b0b0b is offline   Reply With Quote