Color appearance of afterimages compared to the chromatic adaptation to illumination

Abstract

The color appearance of negative afterimages was measured by the elementary color naming method, and the results were compared with those obtained by the two‐room technique. Twenty adapting stimuli were presented on a display sequentially. Subjects first assessed the color appearance of the stimuli. After looking at the adapting stimulus for 10 seconds, the subjects assessed color of the afterimage. Apparent hue of the afterimage was in general not opponent color to the adapting color. The relation between the adapting stimuli and the afterimages was analyzed by the angle difference Δθ, when apparent hues are expressed by the angles of the points on the polar diagram of the opponent color theory. The relation relationship of Δθ to the angle of the adapting color θing was quite similar to the results obtained by the two‐room technique, implying that the chromatic adaptation shown by the afterimage also occurs in the brain rather than in the retina.

Strong effect of the simultaneous color contrast in an afterimage

“…The solid squares in Figure B show the color appearance of the afterimage of the surrounding, and the open squares show the color of the surrounding. The relationship between θ (surround) and θ (surroundafterimage) is in good agreement with the previous results . The open triangles in Figure C show the color appearance of the afterimage of the surrounding, which were given in Figure B by solid squares, and the solid triangles show the afterimage color of the test patch.…”

“…The relationship between θ (surround) and θ (surroundafterimage) is in good agreement with the previous results. 6 The open triangles in Figure 3C show the color appearance of the afterimage of the surrounding, which were given in Figure 3B by solid FIGURE 1 Chromaticity values of the stimuli used for the surroundings FIGURE 2 Plot of the data points on a polar diagram squares, and the solid triangles show the afterimage color of the test patch.…”

Hues of Color Afterimages

“…Our Figure 4 is comparable to their Figure 5, our Figure 9 to their Figure 9. Phuangsuwan, Ikeda, and Mepean (2018) recently reported similar results along these lines. That opponent color theory fails to account for the present findings was detailed by Pridmore (2007).…”

Complementary colors: A literature review

“…Mazotti described, in 2017, a perception‐based model of complementary afterimages 47 and emphasized that such afterimages are not illusions but real perceptions. Phuangsuwan and Ikeda 48 reported on chromatic adaptation using the two‐room technique, and Phuangsuwan et al 49 reported on the appearance of afterimages in various illuminant conditions. Both References 48 and 49 found, to varying degrees, that chromatic adaptation is better explained by the complementary relationship and/or by Munsell color space rather than an opponent color relationship.…”