Ppmspread User Manual(0)                              Ppmspread User Manual(0)



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


SYNOPSIS
       ppmspread amount [ppmfile]


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.



SEE ALSO
       ppm(5) , pnmconvol(1)



AUTHOR
       Copyright (C) 1993 by Frank Neumann

netpbm documentation           20 November 2008       Ppmspread User Manual(0)