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yuvycsnoise(1)                MJPEG tools manual                yuvycsnoise(1)


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.
       If you have questions, remarks, problems or you just want to contact
       the developers, the main mailing list for the MJPEG-tools is:
         mjpeg-users@lists.sourceforge.net

       For more info, see our website at
              http://mjpeg.sourceforge.net/


SEE ALSO

       mjpegtools(1)

MJPEG Tools Team                5 February 2002                 yuvycsnoise(1)

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