Spectral Colour Differences through Interpolation
The existing spectral colour difference metrics are not similar to CIEDE2000. The goal in this study was to implement a system to calculate the difference of spectral colours so that the calculated differences are similar to CIEDE2000 colour differences. The developed system is based on a priori calculated differences between known spectra and the calculus parameters derived from them. With the current system one can calculate spectral differences between a limited set of spectra which are derived by mixing the known spectra. The computation of calculus parameters for the system is a demanding process, and therefore, the calculations were distributed to a cluster of computers. The proposed spectral difference metric is very similar to CIEDE2000 for most of the test spectra. In addition, the metric shows non-zero differences for metameric spectra although CIEDE2000 colour difference metric results in zero differences. This indicates more correct operation of the spectral difference than the operation of CIEDE2000 colour difference.
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