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- pgmenhance(1) Unix Programmer's Manual pgmenhance(1)
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- NNNAAAMMMEEE
- pgmenhance - edge-enhance a portable graymap
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- SSSYYYNNNOOOPPPSSSIIISSS
- pppgggmmmeeennnhhhaaannnccceee [-_N] [_p_g_m_f_i_l_e]
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- DDDEEESSSCCCRRRIIIPPPTTTIIIOOONNN
- 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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- OOOPPPTTTIIIOOONNNSSS
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- 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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- SSSEEEEEE AAALLLSSSOOO
- pgmedge(1), pgm(5), pbm(5)
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- AAAUUUTTTHHHOOORRR
- Copyright (C) 1989 by Jef Poskanzer.
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- 13 January 1989 1
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