1Pgmenhance User Manual(0)                            Pgmenhance User Manual(0)
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NAME

6       pgmenhance - edge-enhance a PGM image
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SYNOPSIS

10       pgmenhance
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12       [-N]
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14       [pgmfile]
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DESCRIPTION

18       This program is part of Netpbm(1).
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20       pgmenhance reads a PGM image as input, enhances the edges, and writes a
21       PGM image as output.
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23       The edge enhancing technique is taken from Philip R.  Thompson's  "xim"
24       program,  which in turn took it from section 6 of "Digital Halftones by
25       Dot Diffusion", D. E. Knuth, ACM Transaction on Graphics Vol. 6, No. 4,
26       October 1987, which in turn got it from two 1976 papers by J. F. Jarvis
27       et. al.
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OPTIONS

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

36       pgmedge(1), pgm(1)
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AUTHOR

40       Copyright (C) 1989 by Jef Poskanzer.
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DOCUMENT SOURCE

43       This  manual  page was generated by the Netpbm tool 'makeman' from HTML
44       source.  The master documentation is at
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46              http://netpbm.sourceforge.net/doc/pgmenhance.html
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48netpbm documentation            13 January 1989      Pgmenhance User Manual(0)