1Ppmspread User Manual(0)                              Ppmspread User Manual(0)
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NAME

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

10       ppmspread amount [ppmfile]
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DESCRIPTION

14       This program is part of Netpbm(1).
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16       ppmspread  reads  a  PPM  image as input and moves every pixel around a
17       random bit relative to its original position. amount determines by  how
18       many pixels a pixel is to be moved around at most.
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20       Pictures  processed with this filter will seem to be somewhat dissolved
21       or unfocussed (although they appear more coarse than  images  processed
22       by something like pnmconvol).
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24       The  randomness  in  the image is limited before Netpbm 10.37 (December
25       2006) -- if you run the program twice in the same second, you  may  get
26       identical output.
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OPTIONS

31       There  are  no command line options defined specifically for ppmspread,
32       but it recognizes the options common to all programs based on libnetpbm
33       (See
34        Common Options ⟨index.html#commonoptions⟩ .)
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SEE ALSO

38       ppm(1), pnmconvol(1)
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AUTHOR

42       Copyright (C) 1993 by Frank Neumann
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DOCUMENT SOURCE

45       This  manual  page was generated by the Netpbm tool 'makeman' from HTML
46       source.  The master documentation is at
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48              http://netpbm.sourceforge.net/doc/ppmspread.html
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50netpbm documentation           20 November 2008       Ppmspread User Manual(0)