Browsing by Subject "Color perception"

Now showing 1 - 3 of 3

Open Access
Color naming
(1998) Şahin, Ebru
In this study, visual aspects of color and neurophysiological processes involved in the phenomenon, language of color and color models were explained in addition to the discussion of different ideas, orientations and previous works behind the subject of matter. Available color terms in Turkish language have been identified and the most frequently known or used non-basic color terms have been attained. An experimental research has been conducted to investigate the resemblance of the basic, and mostly used non-basic color terms, in the minds of the native speakers of Turkish language. Using Munsell Color System, color ranges, reflecting the color naming and color perception of Turkish Society, have been constructed for each color term investigated in the experimental research.
Open Access
Differences in illumination estimation in #thedress
(Association for Research in Vision and Ophthalmology Inc., 2017) Toscani, M.; Gegenfurtner, K. R.; Doerschner, K.
We investigated whether people who report different colors for #thedress do so because they have different assumptions about the illumination in #thedress scene. We introduced a spherical illumination probe (Koenderink, Pont, van Doorn, Kappers, & Todd, 2007) into the original photograph, placed in fore-, or background of the scene and-for each location-let observers manipulate the probe's chromaticity, intensity and the direction of the illumination. Their task was to adjust the probe such that it would appear as a white sphere in the scene. When the probe was located in the foreground, observers who reported the dress to be white (white perceivers) tended to produce bluer adjustments than observers who reported it as blue (blue perceivers). Blue perceivers tended to perceive the illumination as less chromatic. There were no differences in chromaticity settings between perceiver types for the probe placed in the background. Perceiver types also did not differ in their illumination intensity and direction estimates across probe locations. These results provide direct support for the idea that the ambiguity in the perceived color of the dress can be explained by the different assumptions that people have about the illumination chromaticity in the foreground of the scene. In a second experiment we explore the possibility that blue perceivers might overall be less sensitive to contextual cues, and measure white and blue perceivers' dress color matches and labels for manipulated versions of the original photo. Results indeed confirm that contextual cues predominantly affect white perceivers.
Open Access
Effects of hue, saturation, and brightness: part 2-attention
(Wiley, 2004) Camgöz, N.; Yener, C.; Güvenç, D.
This is the second part of an experiment by Camgöz, Yener and Güvenç, which investigates attention responses for foreground-background colour relationships. One hundred and twenty three university undergraduates in Ankara, Turkey, viewed eight background colours selected from HSB colour space, on which colour squares of differing hues, saturations, and brightness's were presented. Participants were asked to show the colour square attracting the most attention on the presented background colour. Findings showed that on any background colour, colours of maximum saturation and brightness attract the most attention (67%). The yellow-green, green, and cyan range attracts the most attention (45%), followed by the red and magenta range (30%). Foreground-background colour relationships in terms of attention are also included in the findings of the study.