Linux and UNIX Man Pages

Test Your Knowledge in Computers #326
Difficulty: Medium
Time on Computers is commonly referred to as GNU Time.
True or False?
Linux & Unix Commands - Search Man Pages

ppmbrighten(1) [freebsd man page]

ppmbrighten(1)                                                General Commands Manual                                               ppmbrighten(1)

ppmbrighten - change an images Saturation and Value from an HSV map SYNOPSIS
ppmbrighten [-n] [-s <+- saturation>] [-v <+- value>] <ppmfile> DESCRIPTION
Reads a portable pixmap as input. Converts the image from RGB space to HSV space and changes the Value by <+- value> as a percentage. Likewise with the Saturation. Doubling the Value would involve ppmbrighten -v 100 to add 100 percent to the Value. The 'n' option normalizes the Value to exist between 0 and 1 (normalized). SEE ALSO
pgmnorm(1), ppm(5) AUTHOR
Copyright (C) 1990 by Brian Moffet Copyright (C) 1989 by Jef Poskanzer. Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, pro- vided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in sup- porting documentation. This software is provided "as is" without express or implied warranty. NOTES
This program does not change the number of colors. 20 Nov 1990 ppmbrighten(1)

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