• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.21 no.4
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• pp.31-36
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• 2021

Colour properties can be classified based on hue, brightness, and saturation, and the characteristics of colour perception vary by colour property. In terms of colour perception, surrounding colours are viewed together rather than independently, and the characteristics of the original colour perception may vary depending on the colour characteristics of the surrounding. Thus far, research on colour perception and sensibility has focused on a monotonic environment, which is different from colour perception in real life. As such, a fundamental study on colour perception considering surrounding colours must be conducted. In this study, a psychophysical experiment was conducted, and the results were analysed to study the colour perception characteristics by edge brightness, Edge brightness was set as a variable based on the visual traits that are most sensitive to brightness, and the experiment was conducted using the Munsell colour system to specify the stimulus colour. Based on the analysis of the experimental outcomes, this study reveals the significance of fundamental research data on the visual and perceptual characteristics of colour perception with regard to edge brightness and provides directions for future research.

• Proceedings of the Korean Society for Cognitive Science Conference
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• 2000.05a
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• pp.19-24
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• 2000

색채에 따른 목표자극과 방해자극의 분리가 2차원 운동지각을 향상시킨다는 연구결과(Stoner & Albright, 1997)와 색채에 따른 목표자극과 방해자극의 분리가 2차원 운동지각을 향상시키지 못한다는 상반된 연구결과(Edwards & Badcock, 1996)의 모순을 해결하고, 선택적 주의에 따른 목표자극과 방해자극의 분리가 2차원 운동지각에 미치는 영향을 연구하기 위하여 일련의 실험이 수행되었다. 이러한 연구문제에 대한 이형철(1999)의 연구가 있었지만, 이형철의 연구는 단지 숙련된 2명의 피험자의 결과에 의존했다는 점, 그리고 선택적 주의에 사용된 자극에서 목표자극과 방해자극이 색채에 의해 완벽하게 분리되지 않을 때와 목표자극과 방해자극이 색채정보에 의해서만 분리되고 그 외의 다른 정보에 의하여 분리되지 않을 때와 목표자극과 방해자극이 그 어떤 정보에 의해서도 분리되지 않을 때, 피험자들의 2차원 운동지각 수행은 비슷하였다. 하지만, 목표자극과 방해자극이 색채정보에 의하여 분리되고 피험자들이 목표자극을 구성하는 색채에 선택적 주의를 기울일 때, 피험자들의 2차원 운동지각 수행은 향상되었다. 이러한 실험결과는 선택적 주의가 개입되지 않는 한 인간의 운동지각체계는 자극 구성요소들을 운동정보분석을 위해 색채에 따라 자동적으로 grouping 하지 않음을 의미한다

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.23 no.3
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• pp.65-70
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• 2023

In recent years, the digital media environment has begun to diversify, with a greater focus being placed on user-centric design. With the development of digital technology, the digital media environment has formed a vast network of information, which supports interactive communication between people, creating a need for user-centric research. Mobile displays, as a representation of the digital media environment, have the advantage of mobility through the use of thin screen displays and low-performance image sensors, which allow for miniaturization and power saving. However, this results in reduced colour accuracy compared to large displays. This study investigates users' colour perception when using dark and light mode mobile displays. Colour perception was measured using a psycho-physical experiment, which controls each colour attribute based on the 12 colours of KS. The results were analysed to determine whether there is a difference in colour perception between dark mode and light mode, and if the difference was statistically significant. Future research directions based on the results are then discussed.

• Science of Emotion and Sensibility
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• v.13 no.1
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• pp.69-78
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• 2010

LED technology offers versatile lighting control while having a very low environmental impact. Consequently, increasing attention is being paid to the emotional impact of LED lighting. This study investigated whether the chromacity of LED lighting influences people's time perception. To this end, two empirical studies were conducted: First, in experiment I(N=28), the subjects compared their perception of the time duration, which was varied from 3s to 20s, for 6 chromatically nuanced lighting conditions, respectively, with that under a daylight condition. The results showed that, in warm-color nuanced lighting conditions, the subjects perceived time to pass more slowly than in the daylight condition. On the contrary, in cool-color nuanced lighting conditions, the subjects perceived time to pass more rapidly than in the daylight condition. Then, in experiment II(N=39), the subjects were asked to count for 90 seconds while simultaneously performing some cognitive tasks. Confirming the results found in experiment I, the subjects perceived time to pass more rapidly in cool-color nuanced lighting conditions than in warm-color nuanced lighting conditions, although the difference was not statistically significant(p>0.05). In addition, the subjects tended to perceive the time to be shorter when the nuanced color of the light was closer to their preferred color.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2004.05a
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• pp.299-299
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• 2004

우리 주변에는 항상 다양한 색채들이 존재하고 있으며 이 색채 안에서 살아가고 있다 또한 생체는 늘 빛을 요구하는데 빛의 강약이나 색채에 의하여 나타나는 감성 변화를 객관적으로 나타내고자 하는 연구가 오래 전부터 있어 왔다. 다양한 색채가 인체에 미치는 영향에 대해서는 심리학분야에서 정성적으로 보여지고 있으며. 색채심리학의 한 분야로서 감각기관의 기능분석에 관한 연구들이 일부 진행되었고 기초의학분야에서도 그 치료효과는 검증이 안 되었으나 점차로 응용하고 있는 실정이다.(중략)

• Science of Emotion and Sensibility
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• v.13 no.2
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• pp.371-380
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• 2010

In this paper, we study the bus stop shelters, one of the public facilities, revised by the development plan of Seoul city. Dark gray and brown are dominant colours for the shelters. As representative colours, designated by Seoul city, dark gray and brown can be harmonious naturally with urban environment. However, in view of universal design, those colours have some problems to be recognized and to be used for handicapped groups, olds and childens especially. For analysis, investigating proposition and circumstance of two groups living in the city is the first place. This study is for building proper colour domains of universal design for public facilities and for recognizing that the way of public facilities should be that the ambit of public space is not regarded as a facility but recognized easily in accordance with environment including a facility. we hope that this paper is practically used as a reference for coming studies are the purposes of this study.

• Korean Journal of Cognitive Science
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• v.13 no.3
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• pp.23-31
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• 2002

Previous studies on color sensibility employed mostly general emotional and/or sensational words, and could not have a focus on the matter of 'color'. This study tried to collect sensibility words of color widely, and select representative words in a systematic way, with a result of 90 sensibility word list. 25 participants were asked to indicate how they feel on each item of the list when each of 22 colored light was projected on the screen. Factor analysis of data extracted 5 sensibility factors, such as mildness, neatness, splendour, dynamic, and weightiness. They were thought to represent color sensibilities more specifically, while having some similarities to, than those factors proposed previously. Issues on interpretation of factors and application of this result were discussed.

• Korean Journal of Cognitive Science
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• v.18 no.1
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• pp.69-90
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• 2007

The purpose of the present research was to examine whether the visual system importantly use binocular disparity information in color-motion binding. Wu, Kanai and Shimojo (2004) reported an illusory color-motion binding which was observed in the peripheral visual area when observers fixated on the central area of visual stimulus. We have found that illusory rotor-motion binding was not observed at the situation where binocular disparity was available but was where it was not available. These results imply that the visual system uses binocular disparity information when it binds rotor and motion and that the binding process occurs after binocular disparity information is processed.

• Korea Science and Art Forum
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• v.23
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• pp.347-358
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• 2016

The design of children's hospitals is highly dependent on color schemes. As a space shared together by both adults and children, the design of children's hospitals require color coordination that takes account of the users' characteristics. However, because the majority of prior research on color perception has focused overly on the emotional aspects, there is a necessity for more rational and scientific analyses to identify the characteristics of the visual perception of colors. Adopting this perspective in analyzing the characteristics of the visual perception of colors, this study aims to move beyond the abstract to focus on more objective methods, such as eye-tracking experiments, to examine the characteristics of hospital visitors' visual attention with respect to colors. Visual perception tracking experiment was conducted on the 2 chosen experimental images with a target group made up of adults and children, the following results were found. Firstly, spaces created with the preference colors of the different groups were found to develop a characteristic of developing higher attention. Secondly, observing the common tendencies for attention for adults and children, the highest region for visual concentration was formed towards the middle, as attention progresses to lower stages visually focused area changes in the order of upper-middle, left and right, and lower regions and edge regions show characteristics of not triggering attention Thirdly, it is understood that children's level of attention drops a lot faster than adults when identifying space therefore it is suspected that children need more elaborate color coordination than adults.

• Science of Emotion and Sensibility
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• v.12 no.1
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• pp.109-120
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• 2009

This study was carried out in order to investigate color sensation and sensibility for yellowish natural dye fabrics and reddish ones and to establish prediction models for color sensibility factors of them by color sensation and the related physical measurements focusing on 40s middle-aged people. Eight fabric stimuli which were dyed with a variety of yellowish or reddish natural dyes was subjectively evaluated in terms of color sensation and sensibility by 40s aged participants. As results, three color sensibility factors including 'Active', 'Characteristic', and 'Relax' were extracted and they were examined in respect of their relationships with color sensation and physical color properties. Color sensibility factor 'Active', the dominant factor for the naturally dyed fabrics was explained by $L^*$ and sensation 'Deep' in its predictive model and a yellowish fabric dyed with 300% solution of armur cork unmordanted was perceived the strongest in the factor. Factor 'Characteristic' was predicted by both $a^*$ and sensation 'Light' and reddish natural dye fabrics tended to be felt more strongly for it. Color sensation 'Strong' was the only predictor for factor 'Relax' in that naturally dyed fabrics with lower values for the sensation seemed to show higher 'Relax' factor and a reddish fabric dyed with safflower 125% was the highest for the color sensibility factor. These results could be utilized to design color-sensible natural dye fabrics for middle-aged people.