• Title/Summary/Keyword: 색채 지각

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Color Vision의 Physiology와 Color Space

  • 이종문;조순채;이종신
    • Textile Coloration and Finishing
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    • v.3 no.3
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    • pp.57-68
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    • 1991
  • Color vision 현상은 대상물질에 의해서 투과(transmission), 굴절(refraction), 반사(reflection)되어 나오는 광(light)이 망막(retina)에 비칠 때 시신경을 자극하여 뇌에 전달됨으로써 일어나는 하나의 감각현상(sensation)이다. 그러므로 그것은 인간의 감각상태, 광의 종류, 대상물질의 환경조건에 따라서, 즉 시각이 이루어진 그 순간에 인간의 눈이 어떻게 작용 하느냐에 달려있는 복잡한 현상 이다. 그래서 지금까지 발표된 20여개의 색채공간 중 그 어느 것도 인간의 감각량을 똑같이 표현할 수 없었던 것은 사실이다. 모든 자연현상이 그렇듯 인간도 개체마다 모두 다르고 대상물질 및 광에 관련된 너무 많은 요소(Factor)가 색지각 현상에 작용하기 때문에 이의 과학적 표현을 위해서는 단순화 및 normalization의 과정을 거치지 않으면 안되었던 것 같다. 지금까지 발표된 20여개의 color space중, perceptibility에 근거를 둔 유일한 color space인, Munsell color space의 해석에 Spline method 같은 수치 해석적 방법을 쓰지 않으면 안되는 그 이유를 제시하려 한다.

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Color reproduction using color appearance model in LCD projection systems (표색계를 이용한 액정 프로젝션 시스템의 색재현)

  • 김지홍
    • Korean Journal of Optics and Photonics
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    • v.9 no.6
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    • pp.373-379
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    • 1998
  • A new method is proposed for the design of the dichroic mirrors in 3-LCD projection systems for color separation/composition. Rather than simply basing the color performance cirterion on luminance or chromatic saturation only, the optimum design parameters can be found by maximizing the volume of the perceived color gamut in RLAB color space and related color appearance model and used the linearly approximated spectrum of dichroic mirrors for simplicity and vector space description. By this method, we found optimal half-power wavelengths in dichroic mirrors which maximized our performance criterion.

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Drawing of Aesthetic Mesure in User Video (사용자 영상에서 미도값의 추출)

  • Shin, Seong-Yoon;Kang, Oh-Hyung;Kim, Hyung-Jin;Jang, Dai-Hyun
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2021.05a
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    • pp.340-341
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    • 2021
  • In this paper, Aesthetic Measure measurements were performed on user images. Aesthetic Measure refers to the sensibility that our sensory organs are stimulated from outside to produce sensations or perceptions. Using this Aesthetic Measure, the problem of color harmony and disharmony treated as emotion was calculated numerically.

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Luminescence effects of POF-based Flexible Textile by post-treated Optic illuminate (측광 후처리 가공에 의한 유연 광직물의 발광 효과)

  • Yang, Eun-Kyung;Lee, Joo-Hyeon
    • Science of Emotion and Sensibility
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    • v.14 no.4
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    • pp.495-502
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    • 2011
  • The plastic optical fiber has been previously known to have the limits in fabrication and care, due to its lack of flexibility and durability. Recently, an innovative technology of 'water-resistant & flexible optical fiber', in which the surface of etched POF(i.e., plastic optical fiber) is to be coated with a type of synthetic resin, has been developed. In this study, the post-treated POF-based flexible textiles were evaluated in terms of luminance, physical visibility and perceived visibility, according to the fabric lengths and colors of the light source. The POF-based flexible textile with 10cm fabric length and green light source appeared to show relatively higher illuminating effects. The maximum distance for perceived visibility of the POF-based flexible textiles was found to be 100m. Therefore, the results of this study are expected to be utilized as a fundamental for the further studies to develop the digital color clothing with application of POF-based flexible textile.

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Proposed Color Scheme with Feng Shui Significance - Focused on the Bonmyeonggung of business owners - (전통풍수의 상징적 의미를 체용(體用)한 간판 배색 제안 - 사업주의 본명궁을 중심으로 -)

  • Park, Hyo-Chul;Lee, Seung-Noh
    • Korean Institute of Interior Design Journal
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    • v.22 no.2
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    • pp.131-139
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    • 2013
  • The purpose of this study is to propose a new direction for color schemes of city signages to provide psychological stability to business owners and improve business value. Types of city sign color schemes and Feng Shui awareness of business owners were examined. Color schemes for signs were proposed, reflecting city landscape colors, color perception theory, and the Feng Shui Sangsaeng Sanggeuk theory. Results of the study can be summarized as follows. First, in order to secure colorscape quality of existing city buildings, signs should be small and consist of only three or fewer colors. Second, existing signage colors and the Feng Shui ideas of business owners have something in common with the five traditional cardinal colors. Thus, it can be interpreted that Feng Shui ideas are deeply rooted in the color use awareness of the Korean people. Third, background colors of signages can reflect the idea of innate Sangsaeng according to the Bonmyeonggung of business owners. The concept of acquired Sanggeuk can also be applied to other design elements such as characters. Fourth, as a second choice according to the function of sign, city landscape or preference of business owner, etc., the background color can remain a color of Sangsaeng, while other design elements such as characters can use a color scheme corresponding to Bihwasaek. Fifth, signs can create a statement and stand out using lightness contrast or saturation contrast theories. A variety of sign color schemes are also possible just by altering the lightness and saturation levels.

The effect of 3D surface configuration on color-motion misbinding (색채- 운동 오결합에서 삼차원 표면배열의 효과)

  • Kham, Kee-Taek
    • Korean Journal of Cognitive Science
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    • v.21 no.1
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    • pp.25-45
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    • 2010
  • If color and motion direction of random dots in the central region was combined in opposite fashions with those of random dots in the peripheral region, the color of dots with a particular direction in the peripheral region is perceived as that of dots in the central region, known as color-motion mis-binding phenomenon. In the present study, it is investigated whether mis-binding would happen even if the central and peripheral region do not have a common three-dimensional surface. In the first experiment, the dots in the peripheral were presented in a different depth plane with use of binocular disparity, and in the second experiment the disparity of dots in the peripheral region was randomly selected from a given range. The results showed that the magnitude of mis-binding was weakened, but not completely disappeared even when two regions did not have a common 3D surface. These results indicate that the surface information from motion and stereodepth may influence in the process of color-motion mis-binding.

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A Study on the Stay affordance for Visual Perception factors in Experience Exhibition Space - With Focus on Gyeonggi Children Museum - (체험전시공간 시지각적요소의 체류지원성향상을 위한 연구 - 경기도 어린이박물관을 중심으로 -)

  • Song, Jeong-Hwa
    • Korean Institute of Interior Design Journal
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    • v.22 no.3
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    • pp.195-204
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    • 2013
  • Today, the children's museum evolved from place of exhibition for seeing and feeling, to that of exhibition for searching and touching, or so-called the hands-on exhibition. This will allow for grabbing the interest from children and provide an opportunity for learning by an actual experience at this intellectual and benign environment. But in this modern society that constantly undergoes evolution even as we speak, it is not an easy task to bring our children to museums, because they are vastly exposed to various media. Moreover, if the children who visited museums carelessly bypass the specific areas intended for exhibition, the educational purpose of "enhanced learning effect with hands-on experience" is easily underachieved. According to children's visual stimuli, their behavioral charactoristics are appeared to freewill curiosity but they show shorter elapsed time(impermanence), intensity(stubbornness), frequent occurrence(frequentness) and changeable (translatability). So, We need Improvement of visual image affordance through the measurement of stay time. Firstly, five factors are extracted by factor analysis on twenty questions based on visual image factors; Color accessability and Satistaction(factor1), brightness and color harmony(factor2), feeling on harmonization of color and stay time(factor3), simplex & complex of space(factor4), feeling on scale(factor5) Secondly, the following result are derived through a distribution chart on an exhibition room of K-museum. As shown above, this study based on various analyzed aspects proposes the directions of a color image plan to improve stay time in exhibition space of children museums with a hope to support educational goals of experience education-focused children museums.

Road Image Enhancement Method for Vision-based Intelligent Vehicle (비전기반 지능형 자동차를 위한 도로 주행 영상 개선 방법)

  • Kim, Seunggyu;Park, Daeyong;Choi, Yeongwoo
    • Korean Journal of Cognitive Science
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    • v.25 no.1
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    • pp.51-71
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    • 2014
  • This paper presents an image enhancement method in real road traffic scenes. The images captured by the camera on the car cannot keep the color constancy as illumination or weather changes. In the real environment, these problems are more worse at back light conditions and at night that make more difficult to the applications of the vision-based intelligent vehicles. Using the existing image enhancement methods without considering the position and intensity of the light source and their geometric relations the image quality can even be deteriorated. Thus, this paper presents a fast and effective method for image enhancement resembling human cognitive system which consists of 1) image preprocessing, 2) color-contrast evaluation, 3) alpha blending of over/under estimated image and preprocessed image. An input image is first preprocessed by gamma correction, and then enhanced by an Automatic Color Enhancement(ACE) method. Finally, the preprocessed image and the ACE image are blended to improve image visibility. The proposed method shows drastically enhanced results visually, and improves the performance in traffic sign detection of the vision based intelligent vehicle applications.

A Study on the Differences of Make-up Color Perception and Preference for the Development of Make-up Color System - Focused on a Female Model in Her Twenties - (메이크업 색채활용시스템 개발을 위한 화장색 이미지 지각 및 선호도 연구 - 20대 여성 모델을 중심으로 -)

  • Lee, Yon-Hee
    • The Research Journal of the Costume Culture
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    • v.13 no.5 s.58
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    • pp.712-728
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    • 2005
  • This study consists of the stimuli of a female model in her twenties with twenty-three different facial make-up and survey on the differences of them for the development of make-up color system, based on the color-sense on the Korean's skin-tone and make-up color, to enforce the efficiency of beauty education. The result of this study and the suggestion is as followed. Firstly, Familiarity, Intelligence, Fitness, Charm, Tradition and Youth were came out as the result of factor analysis of make-up color image perception. Secondly, the stimulus of bare face was evaluated as more familiar and intelligent than the one with image make-up but perceived as unhealthy and not untraditional. Thirdly, skin tone had a big impact on both in lip color that's been applied in monotonous make-up and in image make-up that had been applied in contrastive make-up. Through these results, it is confirmed that the skin tone and make-up colors were influential variables in the research on facial image perception and preference against a female model in her 20s, and also the image test and preference can be changed according to the color contrasts. This research will be used as a basic tool for the development of make-up color applying system with image perception of statics of population variables and preference research. Also it aims to suggest the alternatives to perform the present collage make-up education for more systematic and organized education.

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A Differences in Preference and Evaluation on the Image of Make-up (Part I) -Focused on Perceiver's Genders- (화장색 이미지평가와 선호도 차이 (제1보) -지각자의 성별을 중심으로-)

  • Lee Yon-Hee
    • Journal of the Korean Society of Clothing and Textiles
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    • v.30 no.4 s.152
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    • pp.567-581
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    • 2006
  • The purpose of this research is to provide the basic data for the development of make-up color application system, based of Korean's skin tone and the preference in make-up color to enhance the effectiveness of the education of beauty in universities. The research was conducted by the previous studies, the analyses of sale's rate of hue-cosmetics, the analytic experiment of color of cosmetics by using Spectrum Color Analyzer and other experimental researches. This research, based on the results of three preliminary researches, shows the result of evaluation from perceivers which has been come out from the experiment of having one model in her twenties being changed with twenty-two different conditions of make-up. Here follows the result of the research. Firstly, there was difference on perceiving images in terms of the gender of perceivers and especially male-group tend to have clearly perceived the gap between elegance-greyish purple, orange-natural, red-classic on monochrome make-up and contrast make-up. Secondly, in terms of lip-colors, salmon pink and pink was regarded positively to both female and male subjects and to male subjects, greyish purple was thought to be better on darker skin-tone and to female subjects, better on lighter skin-tone. Thirdly, on image make-up, romantic gives intelligent image regardless of skin-tone and gender, especially gives more positive looks to male subjects. Natural and classic elements were perceived more positively on darker skin-tone and had bigger perceiving gap in female subjects. Fourthly, in preference rate, male subjects normally preferred the look with make-up than female subjects did and salmon pink and pink lip color was preferred on the darker skin-tone.