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Noise filter specialized for NTSC Y/C separation noise


yuvycsnoise [-t] [-m t|b|i|c] [-S MIN] [-T ERRT[,MAXT]] [-B ERRB[,MAXB]] [-I ERRI[,MAXI]] [-C ERRC[,MAXC]]

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If video capture hardware has only a poor Y/C separator, at vertical stripe (especially red/blue), noises appear which seem checker flag and bright/dark invert per 1 frame. yuvycsnoise reduces noises of this type.


yuvycsnoise accepts the following options:


test. Instead of noise reduction, noises will be marked as black pixel.


(default: tbic).
Select method. METHOD is string in which each character mean method.
: ’triframe’ method of luma noise reduction.
: ’biframe’ method of luma noise reduction.
: ’infield’ method of luma noise reduction.
: chroma noise reduction. use 3 frames as ’triframe’.


(default: 4).

Set minimum threshold of luma/chroma difference which is treated as noise.


(default: 32,255).


(default: 32,255).


(default: 16,255).


(default: 12,255).
Set threshold of luma/chroma difference of each methods. ERRx is maximum error of luma/chroma of pixels around target pixel, which should be same if target contain noise. MAXx is maximum threshold of luma/chroma difference of target pixel from luma/chroma after noise reduced.

see also



yuvycsnoise was written by Kawamata/Hitoshi.
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