SYNOPSIS
pgmmedian

[-width=n]

[-height=n]

[-type=median_type]

[-cutoff=int]

[pnmfile]

Minimum unique abbreviation of option is acceptable. You may use dou-
ble hyphens instead of single hyphen to denote options. You may use
white space in place of the equals sign to separate an option name
from its value.


DESCRIPTION
This program is part of Netpbm.

pgmmedian applies a median filter to a PGM image, using either the
histogram sort or select kth value method to determine the median.

See the -type and -cutoff options for information on how pgmmedian
chooses between the two methods.


OPTIONS
-cutoff int






-width=n



-height=n



-type median_type





REFERENCES
? 'Collected Algorithms from ACM' Volume II, Algorithm 489 by


? 'A Fast Two-Dimensional Median Filtering Algorithm' in 'IEEE


? 'Digital Image Processing Algorithms' by Ioannis Pitas, Pren-





SEE ALSO
pgmnoise, pamaddnoise, pgm


HISTORY
pgmmedian was added to Netpbm in Version 10.29 (August 2005). It had
been distributed by Mike Burns via his own web site before that (and
continued to be so).



AUTHOR
Copyright (C) 1996 by Mike Burns <burns@cac.psu.edu>



netpbm documentation 28 August 2005 Pgmmedian User Manual(0)