Detection of binocular chromatic fusion limit for opposite colors

Abstract

When the input colors of the left and right eyes are different from one another, binocular rivalry may occur. According to Hering theory, opponent colors would have the most significant tendency for rivalry. However, binocular color fusion still occurs under the condition that each eye's opponent chromatic responses do not exceed a specific chromatic fusion limit (CFL). This paper detects the binocular chromatic fusion limit for opposite colors within a conventional 3D display color gamut. We conducted a psychophysical experiment to quantitatively measure the binocular chromatic fusion limit on four opposite color directions in the CIELAB color space. Due to color inconsistency between eyes may affect the binocular color fusion, the experiment was divided into two sessions by swapping stimulation colors of left and right eyes. There were 5 subjects and they each experienced 320 trials. By analyzing the results, we used ellipses to quantify the chromatic fusion limits for opposing colors. The average semi-major axis of the ellipses is 27.55 Δ E a b ∗ , and the average semi-minor axis is 16.98 Δ E a b ∗ . We observed that the chromatic fusion limit varies with the opposite color direction: the CFL on RedBlue-GreenYellow direction is greater than that on Red-Green direction, the latter being greater than that on Yellow-Blue direction and the CFL on RedYellow-GreenBlue direction is smallest. Furthermore, we suggested that the chromatic fusion limit is independent of the distribution of cells, and there is no significant change in the fusion ellipse boundaries after swapping left and right eye colors.

An investigation of color difference for binocular rivalry and a preliminary rivalry metric, ΔE*bino

“…Such large observer variability is not surprising given past studies. 20,30 Nevertheless, to avoid having outliers significantly affecting the average, the median of the 10 adjustments (five observers with two repetitions) was taken for each condition and used in the following analyses. Average (median) binocular color rivalry thresholds for all six color centers are shown on the a* and b* plane in Figures 3-5 for the proximal background L* of 30, 50, and 80, respectively.…”

“…The effect of background was also taken into account. Xiong et al 20 conducted a study similar to ours using CIELAB specified colors and evaluated 4 opponent color pairs. The lightness of all stimuli was fixed at 30 L*, and stimuli were presented on a black background.…”

“…There is significant inter-observer variability in our study as well as past studies from others. 20,30 Collecting more observers and more repetitions is desirable to understand such inter-observer T A B L E 5 Factors reported to affect binocular color rivalry/ fusion thresholds.…”

“…In 2021, Xiong et al measured color fusion limits along four axes in CIELAB color space. 20 Each of five observers performed a total of 320 forced-choice trials (= 4 groups of opposite directions  8 opposite color pairs  10 repetitions). They found that the fusion tolerance of the opposite colors in the RB-GY and R-G direction was greater than that of the opposite colors in the Y-B and RY-GB direction.…”

Analysis of the use of color and its emotional relationship in visual creations based on experiences during the context of the COVID-19 pandemic

“…Research on color is very broad and extends to different areas of knowledge, such as marketing and advertising [Gorn et al, 1997, Meyers-Levy andPeracchio, 1995], design in different fields [Baptista et al, 2021, Cyr et al, 2010, consumer behavior [Hsieh et al, 2018, Jalali andPapatla, 2016], psychology [Elliot, 2015, Reece andDanforth, 2017], tourism Egger, 2021], in therapeutic treatments [O'Connor, 2015, Whitfield andWhelton, 2015], and of course, art. His research goes back decades, approached from its perceptual characteristics at the psychophysical level [Berthier et al, 2021, Hsu et al, 2012, Moutoussis, 2015, Stasenko et al, 2014, Xiong et al, 2021, and its link with emotional processes [Elliot, 2015, Elliot and Maier, 2007, O'Connor, 2015.…”