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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 posi-
       tion. 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(1), pnmconvol(1)


AUTHOR
       Copyright (C) 1993 by Frank Neumann



netpbm documentation           20 November 2008       Ppmspread User Manual(0)