.TH pnmsmooth 1 "13 January 1991"
.IX pnmsmooth
.SH NAME
pnmsmooth - smooth out an image
.SH SYNOPSIS
.B pnmsmooth
.RI [ pnmfile ]
.SH DESCRIPTION
Smooths out an image by replacing each pixel with the
average of its nine immediate neighbors.
.IX smoothing
.IX anti-aliasing
It is implemented as a simple script using
.IR pnmconvol .
.IX pnmconvol
.SH "SEE ALSO"
pnmconvol(1), pnm(5)
.SH BUGS
It's a script.
Scripts are not portable to non-Unix environments.
.SH AUTHOR
Copyright (C) 1989, 1991 by Jef Poskanzer.
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