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Old 23rd February 2009, 23:07   #4  |  Link
Video Dude
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Join Date: Apr 2004
Posts: 1,053
Quote:
LanczosResize is an alternative to BicubicResize with high values of c about 0.6 ... 0.75 which produces quite strong sharpening. It usually offers better quality (fewer artifacts) and a sharp image.

Lanczos was created for AviSynth because it retained so much detail, more so even than BicubicResize(x,y,0,0.75). As you might know, the more detail a frame has, the more difficult it is to compress it. This means that Lanczos is NOT suited for low bitrate video, the various Bicubic flavours are much better for this.

Quote:
Spline16Resize & Spline36Resize & Spline64Resize

Three Spline based resizers. The rational for Spline is to be as sharp as possible with less ringing artefacts as LanczosResize produces. Spline16Resize uses sqrt(16)=4 sample points, Spline36Resize uses 6 sample points, etc ... The more sample points is used, the sharper your clip will get.

Code:
http://avisynth.org/mediawiki/Resize
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