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- pnmgamma(1) USER COMMANDS pnmgamma(1)
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- NAME
- pnmgamma - perform gamma correction on a portable anymap
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- SYNOPSIS
- pnmgamma _✓v_✓a_✓l_✓u_✓e [_✓p_✓n_✓m_✓f_✓i_✓l_✓e]
- pnmgamma _✓r_✓e_✓d_✓v_✓a_✓l_✓u_✓e _✓g_✓r_✓e_✓e_✓n_✓v_✓a_✓l_✓u_✓e _✓b_✓l_✓u_✓e_✓v_✓a_✓l_✓u_✓e [_✓p_✓n_✓m_✓f_✓i_✓l_✓e]
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- DESCRIPTION
- Reads a portable anymap as input. Performs gamma correc-
- tion, and produces a portable anymap as output.
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- The arguments specify what gamma value(s) to use. A value
- of 1.0 leaves the image alone, less than one darkens it, and
- greater than one lightens it.
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- All flags can be abbreviated to their shortest unique pre-
- fix.
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- SEE ALSO
- pnm(5)
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- AUTHOR
- Copyright (C) 1991 by Bill Davidson and Jef Poskanzer.
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- Sun Release 4.0 Last change: 12 January 1991 1
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