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SGI Freeware 2001 May
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SGI Freeware 2001 May - Disc 2.iso
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dist
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fw_netpbm.idb
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usr
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freeware
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catman
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u_man
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cat1
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pgmenhance.Z
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pgmenhance
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Text File
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2001-01-10
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2KB
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67 lines
ppppggggmmmmeeeennnnhhhhaaaannnncccceeee((((1111)))) UUUUNNNNIIIIXXXX SSSSyyyysssstttteeeemmmm VVVV ((((11113333 JJJJaaaannnnuuuuaaaarrrryyyy 1111999988889999)))) ppppggggmmmmeeeennnnhhhhaaaannnncccceeee((((1111))))
NNNNAAAAMMMMEEEE
pgmenhance - edge-enhance a portable graymap
SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
ppppggggmmmmeeeennnnhhhhaaaannnncccceeee [-_N] [_p_g_m_f_i_l_e]
DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
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.
OOOOPPPPTTTTIIIIOOOONNNNSSSS
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.
SSSSEEEEEEEE AAAALLLLSSSSOOOO
pgmedge(1), pgm(5), pbm(5)
AAAAUUUUTTTTHHHHOOOORRRR
Copyright (C) 1989 by Jef Poskanzer.
Page 1 (printed 12/12/00)