Recursive Cat? Post: 302694867

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pamdeinterlace

pamdeinterlace(1)					      General Commands Manual						 pamdeinterlace(1)

NAME

       pamdeinterlace - remove ever other row from a PAM/PNM image

SYNOPSIS

       pamdeinterlace [-takeodd] [-takeeven] N [infile]

       You  can use the minimum unique abbreviation of the options.  You can use two hyphens instead of one.  You can separate an option name from
       its value with white space instead of an equals sign.

DESCRIPTION

       pamdeinterlace Removes all the even-numbered or odd-numbered rows from the input PNM or PAM image.  Specify which with  the  -takeeven  and
       -takeodd options.

       This  can  be useful if the image is a video capture from an interlaced video source.  In that case, each row shows the subject 1/60 second
       before or after the two rows that surround it.  If the subject is moving, this can detract from the quality of the image.

       Because the resulting image is half the height of the input image, you will then want to use pamstretch or pnmscale to restore  it  to  its
       normal height:

       pamdeinterlace myimage.ppm | pamstretch -yscale=2 >newimage.ppm

OPTIONS

       -takeodd
	      Take  the  odd-numbered rows from the input and put them in the output.  The rows are numbered starting at zero, so the first row in
	      the output is the second row from the input.  You cannot specify both -takeeven and -takeodd.

       -takeeven
	      Take the even-numbered rows from the input and put them in the output.  The rows are numbered starting at zero, so the first row	in
	      the output is the first row from the input.  This is the default.  You cannot specify both -takeeven and -takeodd.

SEE ALSO

       pamstretch(1), pnmscale(1)

								 11 November 2001						 pamdeinterlace(1)