pnmsmooth(1)                                         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  imple-
       mented  as  a  C  progam  that generates 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).

                         4 December 1994                        1