Several embodiments of the present application disclose techniques, systems and methods for changing or rendering input image data that may assume a first white point for a given display into image data to be rendered under a second—assumed, desired or measured—white point of the display. ...http://www.google.com.au/patents/US20050225561?utm_source=gb-gplus-sharePatent US20050225561 - Systems and methods for selecting a white point for image displays
Systems and methods for selecting a white point for image displays