DeCross derainbow filter

[jackoneill]

A spatio-temporal derainbow filter ported from the Avisynth plugin (http://avisynth.nl/index.php/DeCross).

https://github.com/dubhater/vapoursynth-decross

[ChaosKing]

A quick benchmark on Ryzen1700 @3.6ghz with 720x480 video

DeCross(thresholdy=30, noise=60, margin=1, debug=False)
VS 64bit: ~1400fps (30% cpu usage)
AVS+ 32bit: ~500fps (20% cpu usage)

nice speed up :D

EDIT: bonus with margin=4
VS: 1200fps
AVS: 300fps

[jackoneill]

Thanks for testing.

One reason for the speed up is that the VapourSynth version uses psadbw and pavgb, which weren't available in MMX.