2019 年 43 巻 3+ 号 p. 121-
The simultaneous color contrast is a common subject in the study of color vision as it provides researchers with data from which they can speculate the visual mechanism for chromatic adaptation. In the study, however, people use different devices to present the stimulus pattern. It is possible that different devices give different data to draw different conclusions about the simultaneous color contrast. In this report the simultaneous color contrast is measured with five different devices, object mode, object covered with a tissue paper, display, projector, and two-rooms technique. Four surrounding colors, red, yellow, green, and blue were made same throughout devices. Apparent hue did not change much among devices but the amount of chromaticness of the central patch varied from 15 % to almost 70 % in the case of red surrounding depending on devices. We should not compare results of simultaneous color contrast directly if different devices were employed.
