pnmsmooth(1) General Commands Manual pnmsmooth(1)
NAME
pnmsmooth - smooth out an image
SYNOPSIS
pnmsmooth [-size width height] [-dump dumpfile] [pnmfile]
DESCRIPTION
Smooths out an image by replacing each pixel with the average of its
width X height neighbors. It is implemented as a C progam that gener-
ates a PGM convolution matrix and then invokes pnmconvol.
OPTIONS
-size width height
Specifies the size of the convolution matrix. Default size is a
3x3 matrix. Width and height sizes must be odd. Maximum size
of convolution matrix is limited by the maximum value for a
pixel such that (width * height * 2) must not exceed the maximum
pixel value.
-dump dumpfile
Generates and saves the convolution file only. Use of this op-
tion does not invoke pnmconvol.
SEE ALSO
pnmconvol(1), pnm(5)
AUTHORS
Copyright (C) 1989, 1991 by Jef Poskanzer.
Converted from script to C program December 1994 by Mike Burns
(burns@chem.psu.edu).
4 December 1994 pnmsmooth(1)
Generated by dwww version 1.14 on Wed Jan 22 15:18:07 CET 2025.