This is the command ppmbrighten that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
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).
Use ppmbrighten online using onworks.net services
