NAME
yuvycsnoise - Noise filter specialized for NTSC Y/C separation noise
SYNOPSIS
yuvycsnoise [-t] [-m t|b|i|c] [-S MIN] [-T ERRT[,MAXT]] [-B ERRB[,MAXB]] [-I ERRI[,MAXI]] [-C ERRC[,MAXC]]
DESCRIPTION
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.
OPTIONS
yuvycsnoise accepts the following options:
|
-t |
test. Instead of noise reduction, noises will be marked as black pixel. |
-m METHOD
(default: tbic).
Select method. METHOD is string in which each
character mean method.
t: ’triframe’ method of luma noise
reduction.
b: ’biframe’ method of luma noise reduction.
i: ’infield’ method of luma noise reduction.
c: chroma noise reduction. use 3 frames as
’triframe’.
|
-S MIN |
(default: 4). |
Set minimum threshold of luma/chroma difference which is treated as noise.
-T ERRT[,MAXT]
(default: 32,255).
-B ERRB[,MAXB]
(default: 32,255).
-I ERRI[,MAXI]
(default: 16,255).
-C ERRC[,MAXC]
(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.
AUTHOR
yuvycsnoise
was written by Kawamata/Hitoshi.
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SEE ALSO
mjpegtools(1)