Figure 2.
Competitor set for one target block (“rose”). In the illuminant-changed condition (right), the competitor set consisted of six color samples: the tristimulus match (T) and the reflectance match (R) for the target, three blocks equally spaced between the tristimulus and the reflectance match in CIELAB space (C1, C2, C3) and an overconstancy match (C5). In the illuminant-constant condition (left), the competitor set consisted of five color samples: the tristimulus match (T), the two closest competitors from the illuminant-changed condition (C1 and C2) as well as two other competitors equally distant from the target but in the opposite direction along the same line in color space (C−1 and C−2).