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 Linux Square						  5 February 2002						    yuvycsnoise(1)