ppmbrighten

change an images Saturation and Value from an HSV map

Synopsis

ppmbrighten [-n] [-s <+- saturation>] [-v <+- value>] <ppmfile>

add an example, a script, a trick and tips

: email address (won't be displayed)
: name

Step 2

Thanks for this example ! - It will be moderated and published shortly.

Feel free to post other examples Oops ! There is a tiny cockup. A damn 404 cockup. Please contact the loosy team who maintains and develops this wonderful site by clicking in the mighty feedback button on the side of the page. Say what happened. Thanks!

examples

no example yet ...

... Feel free to add your own example above to help other Linux-lovers !

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).

notes

This program does not change the number of colors.

see also

pgmnorm , ppm

author

Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation. This software is provided "as is" without express or implied warranty.