Color Research and Application, Vol.23, No.2, 78-91, 1998
Field trials of the CIE chromatic-adaptation transform
Field trials of the chromatic-adaptation transform provided by CIE Technical Report No. 109(1994) was conducted on the basis of the CSAJ, the Breneman, and the McCann experiments. In the study, a concept of common normalized illuminant and illuminance, independent of various illuminants and illuminances used in the actual experiments, is newly introduced in the predictions. This concept made it possible to compare the various experimental results done under different illuminations at the common normalized condition. The function of the CIE chromatic-adaptation transform using this concept of normalization becomes very similar to that of the nonlinear color-appearance model. In addition, the effective adaptation coefficient alpha(min) already proposed by the authors is confirmed as effective in the case of the CIE chromatic-adaptation transform. The transform predicts the above three kinds of experiments nicely.