ACCURATE COLOR REPRODUCTION OF CRT-DISPLAYED IMAGES AS PROJECTED 35-MM SLIDES

Accurate color reproduction of images presented on a computer-controll ed CRT display as projected 35-mm transparencies is a complicated proc edure requiring the characterization and control of several imaging pr ocesses and the application of appropriate color appearance modeling t o account for the changes in viewing conditions. We review a process f or image recorder characterization, projection system characterization , and testing of color appearance models for this application. Accurat e image recorder characterization was achieved through a combination o f empirical modeling of the exposure and processing system and of a ph ysical model of photographic film. The projection system characterizat ion included specification of the spectral properties of the light sou rce, reflectance properties of the viewing screen, and the effects of light exposure and temperature on the photographic transparencies. Col or appearance models were used to predict the changes in image color a ppearance due to changes in media, white point, luminance, and surroun d. The RLAB model proved to work best in this application. (C) 1996 SP IE and IS&T.