debian man page for pnmsmooth

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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 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 pnmsmooth(1)