In certain circumstances, it is preferred that identical RGB time intervals result in equal observed differences on the display. In medical imaging, where the Grey Scale Display Function is used to specify the luminance differences that will result in equivalent perceived brightnesses, this is very crucial. As a result, radiological pictures can be reliably interpreted by medical professionals.
To apply this idea to coloured images, work is now being done. In graphic arts, soft proof Display Calibration Management Tools is used to simulate how an image would look when printed using a display that is reasonably accurate. The display should be able to be calibrated to a D50 white point to meet ISO 3664 viewing standards for photography and graphic arts, with a brightness of 160 candelas/m2.
