Hues of color afterimages
Hues of color afterimages
We studied the relationship between color afterimages and complementary colors. The hues of afterimages of 24 inducer hues, uniformly distributed over the rgb color circle, were measured by an iterative method of adjustment. The judgment of equality of hue of the afterimage and a synthesized patch was effectively judged at the moment immediately after the switch-off of the inducer, when the synthesized patch went through any number of iterative adjustments. The two patches—both phenomenally present, but only one optically presented—appeared to the left and right of a fixation mark that was fixated throughout the whole procedure. Thus, both patches were present in eccentric vision. The hues of afterimages were found to be quite different from the hue of the complementary of the inducer. Almost one half of the color circle (orange to chartreuse) leads to afterimage hues in a narrow region of purples. This implies that color circles based on diametrically opposed inducer–afterimage hues are necessarily inconsistent. Yet, perhaps surprisingly, the relation between primary and afterimage hues is still approximately an involution (they are reciprocally related).
RGB colors, afterimage, color, complementary colors, gamma correction, supplementary colors
1-18
Koenderink, Jan
263f14e2-d7b5-4fdf-a052-9aabaeef5fa9
van Doom, Andrea
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Witzel, Christoph
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Gegenfurtner, Karl R.
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18 March 2020
Koenderink, Jan
263f14e2-d7b5-4fdf-a052-9aabaeef5fa9
van Doom, Andrea
bd6f492f-f6e0-496c-a765-50a8c221d2b8
Witzel, Christoph
dfb994f1-7007-441a-9e1a-ddb167f44166
Gegenfurtner, Karl R.
4a15dafb-60db-41c6-a845-b0f37bee8d3e
Koenderink, Jan, van Doom, Andrea, Witzel, Christoph and Gegenfurtner, Karl R.
(2020)
Hues of color afterimages.
i-Perception, 11 (1), .
(doi:10.1177/2041669520903553).
Abstract
We studied the relationship between color afterimages and complementary colors. The hues of afterimages of 24 inducer hues, uniformly distributed over the rgb color circle, were measured by an iterative method of adjustment. The judgment of equality of hue of the afterimage and a synthesized patch was effectively judged at the moment immediately after the switch-off of the inducer, when the synthesized patch went through any number of iterative adjustments. The two patches—both phenomenally present, but only one optically presented—appeared to the left and right of a fixation mark that was fixated throughout the whole procedure. Thus, both patches were present in eccentric vision. The hues of afterimages were found to be quite different from the hue of the complementary of the inducer. Almost one half of the color circle (orange to chartreuse) leads to afterimage hues in a narrow region of purples. This implies that color circles based on diametrically opposed inducer–afterimage hues are necessarily inconsistent. Yet, perhaps surprisingly, the relation between primary and afterimage hues is still approximately an involution (they are reciprocally related).
Text
Koenderink et al. (2020) Hues of Color Afterimages
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More information
Accepted/In Press date: 27 December 2019
e-pub ahead of print date: 18 February 2020
Published date: 18 March 2020
Additional Information:
Funding Information:
The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: The work was supported by the DFG Collaborative Research Center SFB TRR 135 headed by Karl Gegenfurtner (Justus-Liebig Universität Giessen, Germany) and by the program by the Flemish Government (METH/14/02), awarded to Johan Wagemans. Jan Koenderink is supported by the Alexander von Humboldt Foundation.
Publisher Copyright:
© The Author(s) 2020.
Keywords:
RGB colors, afterimage, color, complementary colors, gamma correction, supplementary colors
Identifiers
Local EPrints ID: 438352
URI: http://eprints.soton.ac.uk/id/eprint/438352
ISSN: 2041-6695
PURE UUID: 0353e396-ddfe-44ea-baeb-7af23e55d6b4
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Date deposited: 06 Mar 2020 17:33
Last modified: 17 Mar 2024 04:00
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Author:
Jan Koenderink
Author:
Andrea van Doom
Author:
Karl R. Gegenfurtner
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