Quote:
Originally posted by HarryM
Do exist any sophisticated resize algorithm, which reduce noise and preserve sharp edges?
|
Some descriptions from the DVD2MPG Squeezer readme. If I remember correctly, my testings showed that the descriptions are correct
.
Quote:
Resize Filter = The used filter for resizing the source picture to output
size. The following filters are available:
- Nearest Neighbourhood: This is the fastest one. Not
recommended at all, because aliasing is present
everywhere. A lot of jagged lines and artifacts are
common.
- Triangle Filter AKA bilinear interpolation: After
nearest neighbourghood this is the 'second fastest'. It
provides a decent image with good speed.
- Hermite Filter: Unknown what it does exactly but is
as fast is the Triangle Filter.
- Bell Filter: This filter blurs the image at the same
time it resizes. If you want to smooth the video and
your source video is very noisy use this.
- BSpline Filter: One step further from 'Bell Filter'. A
bit slower and more blurred image but less noisy and
less sharp though.
- Bicubic Filter: Very good quality/ speed ratio. This
filter minimize artifacting and aliasing while
maintaining the speed. This should be the default
setting for almost everyone.
- Mitchell filter: Similar to bicubic filtering but it's
a bit slower. If you want similar performance to
bicubic filtering but your source video is noisy,
try this one.
- Lanczos windowed Sinc: Provides quality similar to that
of Hanning windowing method but it's a bit faster.
- Hanning Windowed Sinc: Provides somewhat better quality
than bicubic filtering but it's rather slow. Try it if
CPU horsepower is not a problem for you.
|
Hopefully some of the more knowlegable person here can comment on this one...
Cheers,
Mijo.