brighten a picture up to complete white-out
see also :
ppmdim - pnmgamma - ppmbrighten
add an example, a script, a trick and tips
no example yet ...
... Feel free to add your own example above to help other Linux-lovers !
portable pixmap as input. Increases its brightness by the
specified flashfactor up to a total white-out image. The
flashfactor may be in the range from 0.0 (original
picture’s brightness) to 1.0 (full white-out, The
pnmgamma does not do the brightness correction in the
way I wanted it, this small program was written.
This program is
similar to ppmbrighten , but not exactly the
ppmdim , pnmgamma , ppmbrighten
1993 by Frank Neumann