[OPTICAL REVIEW Vol. 8, No. 1 (2001) 71-77]

Total Colorimetric Evaluation of a Set of Color Sensors for a Variety of Illuminants and Objects

Noriyuki SHIMANO

Faculty of Science and Engineering, Kinki University 3-4-1, Kowakae, Higashi-Osaka, Osaka 577-8502, Japan

(Recieved September 29, 2000; Accepted December 6, 2000)

Recently, a new colorimetric evaluation model for a set of color sensors was proposed by the author (N. Shimano: J. Inst. Image Electron. Eng. Jpn. 29 (2000) 506 and 517.), and the quality was shown to be defined by the ratio of the statistical mean energy of color stimuli at the retina (SMECS) to the captured energy of the SMECS by the sensors. It was also shown that the quality depends on the illuminants and objects. The experimental results agreed quite well with the proposed model. However, an extension of the model is needed to evaluate the full colorimetric quality of an image acquisition device for a variety of illuminants and objects. In this paper the extended model called the total colorimetric quality model and experimental results for sensors under such a variety are presented.

Key words : color, colorimetry, colorimetric evaluation, device independent color reproduction, image acquisition device, digital camera, scanner