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pnmgamma - perform gamma correction on a portable anymap |
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pnmgamma value [pnmfile] |
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Reads a portable anymap as input. Performs gamma correction, and produces a portable anymap as output. 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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pnm(5) |
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Copyright (C) 1991 by Bill Davidson and Jef Poskanzer. |
