Abstract
The authors have developed measuring methods to assess and characterize colour reproduction of digital still cameras and digital video cameras for use in computer systems and similar applications. For objective assessment of the performance of digital cameras which capture colour images and output corresponding colour information in red-green-blue digital data, the methods incorporate measurements of characteristics in terms of spectral responsivity and related items. Furthermore, they have developed another new method of measurements to cover some possible defects in the conventional methods, considering negative lobes in spectral responsivity which exist in some cameras designed based on ideal characteristics. The paper describes an arrangement of equipment, definition of test chart and raw data handling together with some worked examples.
