Does any windows software exist to auto-adjust the brightness of a monitor (laptop screen and external monitor) based on the amount of light that a connected webcam senses?
i was looking for the same thing, for now i only found this, doesn't work with camera, but with time, at least
I've just done this tonight : http://calvin-studio.fr/projets.php?p=14 (in French)
Archive here , with code + Visual project + executable.
Uses parts of redshift sourcecode, and escapi. So : Windows only, ugly console, never tested on dual display, probably messes with any software calibration tool, f.lux incompatible, Skype/MSN/any_videoconference_software-incompatible.
Works for me, though :)