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- ppppggggmmmmeeeennnnhhhhaaaannnncccceeee((((1111)))) XXXXEEEENNNNIIIIXXXX SSSSyyyysssstttteeeemmmm VVVV ((((11113333 JJJJaaaannnnuuuuaaaarrrryyyy 1111999988889999)))) ppppggggmmmmeeeennnnhhhhaaaannnncccceeee((((1111))))
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- NNNNAAAAMMMMEEEE
- pgmenhance - edge-enhance a portable graymap
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- SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
- ppppggggmmmmeeeennnnhhhhaaaannnncccceeee [-_N] [_p_g_m_f_i_l_e]
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- DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
- Reads a portable graymap as input. Enhances the edges, and
- writes a portable graymap as output.
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- 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.
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- 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.
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- SSSSEEEEEEEE AAAALLLLSSSSOOOO
- pgmedge(1), pgm(5), pbm(5)
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- AAAAUUUUTTTTHHHHOOOORRRR
- Copyright (C) 1989 by Jef Poskanzer.
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- Page 1 (printed 9/7/93)
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