Flash white balance
Good usage of the flash in photography requires the photographer to
match the color of the flash with the existing illumination. It is
however difficult to estimate the color of a light source. We want to
develop an application on mobile phones where the photographer will
take a picture of a grey patch in the available light and the app will
return the best filter to put on the flash to match this light color.
Contact: Fredo Durand (firstname.lastname@example.org)