Linux cli command ppmspread

➡ A Linux man page (short for manual page) is a form of software documentation found on Linux and Unix-like operating systems. This man-page explains the command ppmspread and provides detailed information about the command ppmspread, system calls, library functions, and other aspects of the system, including usage, options, and examples of _. You can access this man page by typing man followed by the ppmspread.

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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

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