A Tone reproduction study of a digital image processing system

Photographic tone reproduction analysis was applied to a digital image processing system (DIPS) . The problem was to calculate computer mapping functions for the DIPS that would cause input scenes to be reproduced having Clark\u27s tone reproduction characteristics. Using the graphical method of a Jones Diagram, unique computer mapping functions were constructed for four images processed by the DIPS. After processing the imagery in the computer, the pixels were reconstructed into photographic transparencies for projection in a specially designed projection area. The results of this work concluded that tone reproduction analysis is useful in studying the macro effect of luminance transfer through a DIPS , and that tone reproduction characteristics may be modified digitally using pre-determined computer mapping functions