PPMSPREAD

NAME

      ppmspread - displace a portable pixmap's pixels by a random amount

SYNOPSIS

      ppmspread amount [ppmfile]

DESCRIPTION

      Reads a portable pixmap as input. Moves every pixel around a bit
      relative to its original position. amount determines by how many
      pixels a pixel is to be moved around at most.
      Pictures processed with this filter will seem to be somewhat dissolved
      or unfocussed (although they appear more coarse than images processed
      by something like pnmconvol ).

DEMONSTRATION

      Let a.ppm be a portable pixmap.
      The following command will spread each pixel by up to 5 pixels:
	ppmmerge ppmspread 5 a.ppm > aspread.ppm

BEFORE

AFTER

SEE ALSO

      ppm(5), pnmconvol(1)

AUTHOR

      Copyright (C) 1993 by Frank Neumann