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/US7864188?utm_source=gb-gplus-sharePatent US7864188 - Systems and methods for selecting a white point for image displays
