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
    option 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).