Manual: pgmenhance

Pgmenhance User Manual(1)			   General Commands Manual			   Pgmenhance User Manual(1)

NAME
       pgmenhance - edge-enhance a PGM image

SYNOPSIS
       pgmenhance

       [-N]

       [pgmfile]

DESCRIPTION
       This program is part of Netpbm(1).

       pgmenhance reads a PGM image as input, enhances the edges, and writes a PGM image as output.

       The  edge  enhancing technique is taken from Philip R. Thompson's "xim" program, which in turn took it from section 6
       of "Digital Halftones by Dot Diffusion", D. E. Knuth, ACM Transaction on Graphics Vol. 6, No. 4, October 1987,  which
       in turn got it from two 1976 papers by J. F. Jarvis et. al.

OPTIONS
       In addition to the options common to all programs based on libnetpbm (most notably -quiet, see  Common Options ), pg‐
       menhance recognizes the following command line option:

       -N

	      The optional -N option should be a digit from 1 to 9.  1 is the lowest level of enhancement; 9 is the highest.
	      The default is 9.

SEE ALSO
       pamedge(1), pgm(1)

AUTHOR
       Copyright (C) 1989 by Jef Poskanzer.

DOCUMENT SOURCE
       This manual page was generated by the Netpbm tool 'makeman' from HTML source.  The master documentation is at

	      http://netpbm.sourceforge.net/doc/pgmenhance.html

netpbm documentation				       13 January 1989				   Pgmenhance User Manual(1)