phpman > man > ppmspread(1)

Che Dong

Displace the pixels in a PPM image by a randomized amount.

Displace the pixels in a PPM image by a randomized amount that is at most `a`
ppmspread {{a}} {{path/to/input_file.ppm}} > {{path/to/output_file.ppm}}
Specify a seed to a the pseudo-random number generator
ppmspread {{a}} {{path/to/input_file.ppm}} {{-r|-randomseed}} {{seed}} > {{path/to/output_file.ppm}}

ppmspread(1)                           General Commands Manual                          ppmspread(1)



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 po‐
       sition. 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  (al‐
       though they appear more coarse than images processed by something like pnmconvol ).

SEE ALSO
       ppm(5), pnmconvol(1)

AUTHOR
       Copyright (C) 1993 by Frank Neumann



                                          16 November 1993                              ppmspread(1)

Generated by phpMan v3.7.6 Author: Che Dong Under GNU General Public License
2026-06-09 17:29 @2600:1f28:365:80b0:c49e:5481:119:ea02
CrawledBy CCBot/2.0 (https://commoncrawl.org/faq/)

phpMan > man > ppmspread(1)