Manual: ppmspread

Ppmspread User Manual(1)			   General Commands Manual			    Ppmspread User Manual(1)

NAME
       ppmspread - displace a PPM image's pixels by a random amount

SYNOPSIS
       ppmspread amount [ppmfile] [-randomseed=integer]

DESCRIPTION
       This program is part of Netpbm(1).

       ppmspread  reads	 a  PPM	 image as input and moves every pixel around a random 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).

       The  randomness	in  the	 image is limited before Netpbm 10.37 (December 2006) -- if you run the program twice in the
       same second, you may get identical output.

OPTIONS
       In addition to the options common to all programs based on libnetpbm (most notably  -quiet,  see	  Common Options  ),
       ppmspread recognizes the following command line options:

       -randomseed=integer
	      This is the seed for the random number generator that generates the pixels.

	      Use this to ensure you get the same image on separate invocations.

	      This option was new in Netpbm 10.94 (March 2021).

SEE ALSO
       ppm(1), pnmconvol(1)

AUTHOR
       Copyright (C) 1993 by Frank Neumann

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/ppmspread.html

netpbm documentation					06 March 2021				    Ppmspread User Manual(1)