A display calibration technique based on invariant human colour mechanisms

ABSTRACT

When human observers are asked to adjust a coloured light such that it appears neither red nor green, or such that it appears neither yellow nor blue, most colour-normal observers have no difficulty in making these adjustments. Furthermore, these colour appearance judgements are not significantly influenced by language or age [Saunders and van Brakel 1997] and individual differences in colour sensitivity are not reflected in the unique hues settings [Webster et al. 2000]. The human colour system seems to be able to calibrate itself so that there is a remarkable agreement across observers in relation to these unique hue judgements. Here we show how we can use the invariance of these unique hue judgements to develop a colour calibration technique for display devices which eliminates the need for an external calibration standard or a measurement device.

REFERENCES

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• 2: Webster, M. A., Miyahara, E., Malkoc, G., et al. 2000. Variations in normal color vision. II. Unique hues. Journal of the Optical Society of America A 17(9): 1545--1555.
• 3: Wuerger, S. M., Atkinson, P. and Cropper, S. J. 2005. The Cone Inputs to the Unique-Hue Mechanisms. Vision Research (accepted for publication).