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 mov-
    ing, 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 nor-
    mal 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)