plucky (1) pamdeinterlace.1.gz

NAME

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

SYNOPSIS

       pamdeinterlace

       [-takeodd]

       [-takeeven]

       [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

       This program is part of Netpbm(1).

       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 pamscale to restore it to its normal height:

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

       Another, usually better, way to deinterlace an image is with pammixinterlace.

OPTIONS

       In addition to the options common to all programs based on libnetpbm (most notably -quiet, see
        Common Options ⟨index.html#commonoptions⟩  ),  pamdeinterlace  recognizes  the  following  command  line
       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

       pammixinterlace(1), pam(1) pnm(1)

DOCUMENT SOURCE

       This  manual  page was generated by the Netpbm tool 'makeman' from HTML source.  The master documentation
       is at

              http://netpbm.sourceforge.net/doc/pamdeinterlace.html