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RedHat 9 (Linux i386) - man page for pgmenhance (redhat section 1)

pgmenhance(1)			     General Commands Manual			    pgmenhance(1)

NAME
       pgmenhance - edge-enhance a portable graymap

SYNOPSIS
       pgmenhance [-N] [pgmfile]

DESCRIPTION
       Reads  a  portable graymap as input.  Enhances the edges, and writes a portable graymap 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
       The optional -N flag 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
       pgmedge(1), pgm(5), pbm(5)

AUTHOR
       Copyright (C) 1989 by Jef Poskanzer.

					 13 January 1989			    pgmenhance(1)


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