Piper
17th June 2003, 20:38
From thread: Denoising/Increasing compressibility with BilinearResize() (http://forum.doom9.org/showthread.php?s=&threadid=55612)
Originally posted by sh0dan
It is much more similar to mSmooth. I don't expect this to give much different compression results - as the soft areas are quite smooth - even with lanczos. You should try using msmooth to generate a mask for you, instead of using the resizer.
BiCublin I've noticed, has a nice side effect of reducing the amount of shimmering/stairstepping found during slight motion when downsizing tv caps (using 720x480 -> 352x480) after applying TomsMoComp. The destination is either DivX or DVD.
Example avs
AVISource("capture.avi")
TomsMoComp(1,5,0)
ConvertToYV12()
BiCublinResize(352,480)
Convolution3D(preset="movieHQ")
UnDot()
I've found this technique quite useful for preserving quite a bit of detail. However, when using AVISynth resizers, I've noticed that this effect is exaggerated and is somewhat distracting.
@sh0dan: If you're familiar with this effect, would you proprose using a combination of Lanczos & mSmooth in place of Bicublin in this case?
Of course, I wish I were at home right now so I could try this...
Originally posted by sh0dan
It is much more similar to mSmooth. I don't expect this to give much different compression results - as the soft areas are quite smooth - even with lanczos. You should try using msmooth to generate a mask for you, instead of using the resizer.
BiCublin I've noticed, has a nice side effect of reducing the amount of shimmering/stairstepping found during slight motion when downsizing tv caps (using 720x480 -> 352x480) after applying TomsMoComp. The destination is either DivX or DVD.
Example avs
AVISource("capture.avi")
TomsMoComp(1,5,0)
ConvertToYV12()
BiCublinResize(352,480)
Convolution3D(preset="movieHQ")
UnDot()
I've found this technique quite useful for preserving quite a bit of detail. However, when using AVISynth resizers, I've noticed that this effect is exaggerated and is somewhat distracting.
@sh0dan: If you're familiar with this effect, would you proprose using a combination of Lanczos & mSmooth in place of Bicublin in this case?
Of course, I wish I were at home right now so I could try this...