| Abstract: | The method of singular-value decomposition analysis of matrices is used to analyze the 20 color-matching functions of Stiles's observers. It is confirmed that the 20 color-matching functions are well reconstituted by the first three decomposed components. A new deviate observer is derived from the first decomposed component. It is shown that the new deviate observer can be used well in the computation of observer-metamerism indices. Furthermore, an optimized deviate observer is developed by modifying the color-matching functions of the new deviate observer slightly. Both the new and the optimized deviate observer give a basis for the further study of the evaluation of observer metamerism. |
