• Title/Summary/Keyword: Achromatic color

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Estimation of Spectral Distribution of Illumination Using Maximum Achromatic Region (최대 무채색 영역을 이용한 광원의 분광분포 추정)

  • Kim, Hui-Su;Kim, Yun-Tae;Lee, Cheol-Hui;Ha, Yeong-Ho
    • Journal of the Institute of Electronics Engineers of Korea SP
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    • v.38 no.4
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    • pp.392-400
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    • 2001
  • This paper proposes an illuminant estimation algorithm that estimates the spectral power distribution of an incident light source from a single image. The proposed illumination recovery procedure has two phases. First, the surface spectral reflectances are recovered in the maximum achromatic region (MAR) which is the most achromatic and highly bright region of an image after removing partially the effect of illumination using a modified gray world algorithm. Here, the surface reflectances of MAR are estimated using the principal component analysis method along with a set of given 1269 Munsell samples. Second, the Population of reflected lights is determined with 1269 Munsell samples and a set of illuminations then the spectral distribution of re(looted lights of MAR is selected from the spectral database. That is, color differences are compared between the reflected lights of the MAR and the spectral database, which is the set of reflected lights built by the given set of Munsell samples and illuminants. Then the closest colors from the spectral database are selected. Finally, the illuminant of an image can be calculated dividing the average spectral distributions of reflected lights of MAR by the average surface reflectances of the MAR. In order to evaluate the proposed algorithm, experiments with artificial scenes, which are exposed to chromatic illuminants, were performed and the spectral distribution of estimated illumination and color difference are compared with results of the conventional method.

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A Comparison Analysis of Color Characteristics and Images in Flight Attendant Uniforms of Korea, China and Japan

  • Shao, Chiqian;Lee, Misuk
    • Journal of Fashion Business
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    • v.17 no.6
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    • pp.111-124
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    • 2013
  • The purpose of this research was to conduct a comparison analysis of color in the characteristics and image of Korea/China/Japan airline uniforms. Research subjects for this research included 19 Korean, Chinese and Japanese airlines servicing the Incheon International Airport in South Korea. The analysis methods are based on the Munsell Color Order System and PCCS (Practical Color Coordinate System) tone classification in order to examine the color characteristics. For the color image analysis, the present research performed a positioning on Shigenobu Kobayashi's color images scale with adjectives in order to compare the resulting differences. As a result of the analysis, this research discovered the following; First, achromatic colors were found to be used most frequently in flight attendant uniforms of Korea/China/Japan. In Korean flight attendant uniforms, YR/Y, GY and B/PB/P; in Chinese, R/PB, RP, YR/Y/GY and BG/P; in Japanese, RP, R/P/PB and Y/BG were found in order. As for the main uniform colors, Korean flight attendant uniforms were found to be in the colors YR, and R/GY/B/P; Chinese flight attendant uniforms, R, PB, and P/B; and Japanese flight attendant uniforms, R, BG, B, RP and N. Second, Korean flight attendant uniforms used W and It most frequently; China flight attendant uniforms, W; and Japanese flight attendant uniforms, W and v. Regarding the main colors, Korean flight atteddant uniforms used lt/g and v/p; Chinese flight attendant uniforms, v, dp and s/d/dkg; and Japanese flight attendant uniforms, v/dkg and Bk. Third, after positioning each country's uniform color combination bars on the Kobayashi image scale, Korean flight attendant uniforms showed classic images along with casual/pretty/elegant/chic images; Chinese flight attendant uniforms displayed, casual images as well as, dynamic/gorgeous/chic/cool casual/dandy images; and finally, Japanese flight attendant uniforms converyed dandy images along with casual/gorgeous images. This research findings indicate that Korea/China/Japan airlines' flight attendant uniforms seek for differentiated image establishment by reflecting their own CIs and unique national cultures in the uniform color marketing.

A Comparative Study on the Characteristics of Costume Colors of Korea. China. Japan in the 20th Century (근.현대에 있어서 한.중.일 삼국의 복식색채 특성 비교)

  • Lee, Jee-Hyun;Kim, Young-In;Kim, Hee-Yeon
    • Journal of the Korean Society of Costume
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    • v.56 no.9 s.109
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    • pp.98-111
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    • 2006
  • The objective of this research is to examine the commonness and differences of Korean, Chinese and Japanese costume colors of modern and present ages. The result of this study showed that modern China and Japan had quick influx speed of Western culture. Dissimilarly, modern Korea kept conception of colors from Chosun periods that show the high frequency of 'Five Elements Colors' and neutral colors in Red, Yellow and Purple Blue. Today, the costumes of China, Korea and Japan use similar tones of color but each country approached in different selections of achromatic colors; Korean prefers color in Yellow Red, Purple, and Chinese in Green Yellow, Green and Japanese in Purple Blue. Light greyish and pale toned Yellow Red and grayish tone have increased in modern Chinese and Japanese costumes. Also both countries have corresponding assumptions in using color of Red in strong tone. The analysis of color and tone distribution showed that, Japanese costume colors in modern and present times have correlative number of use as in Western culture. Traditionally, Japan has least notion of using 'Five Elements Colors' which only gives minor changes by convergence of Western color culture. In other side, China had developed in color rather than tone compares to Korea and Japan by using many of the Red color of strong, vivid and deep tones which made red distinguishing color of China. Japan continues to use of low chroma colors and became a characteristic in modern and present day, also they use an abundance of color in Yellow Red, purple Blue. Korea has a higher frequency showing in light, bright tones of color distinctively compares to China and Japan.

A Study on Visual Attention According to Color and Form -Focusing on Eye Tracking Experiment- (색상(Color)과 형태(Form)에 따른 시각적 주의에 관한 연구 -아이트래킹 실험을 중심으로-)

  • Hwang, Mi-Kyung;Kwon, Mahn-Woo;Park, Min-Hee
    • The Journal of the Korea Contents Association
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    • v.19 no.4
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    • pp.102-110
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    • 2019
  • Among the visual sensibility studies, many studies of color or movement have been done, but not much have been done about whether it can evoke sensibility in static form itself. Therefore, in this study, visual attention by AOIs(Area of Interests) combined with color based on three basic forms was analyzed using eye tracking, and the results were visually expressed through Heat Map and Gaze Plot. In addition, A Paired t-test was performed on the mean difference between the two groups to verify the statistical significance of each color and form. As a result of the experiment, the chromatic color form was more visual attention than the achromatic color form and warm color form was higher mean than cool color, so the visual attention was greater. In this study, it is meaningful to suggest a quantitative method which is easy to interpret objectively the design element that is easily interpreted subjectively. Based on the results of this study, if more further studies and quantitative analysis methods are presented that can identify differences in visual attention from various colors and forms, it can be used to provide guidelines for basic design.

A Study on Used Colors Characteristic of Case Study for Children Play Therapy Center (국내.외 놀이치료 시설의 사례분석을 통한 사용 색채 특성에 관한 연구)

  • Choi, Jin-Hee
    • Korean Institute of Interior Design Journal
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    • v.20 no.4
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    • pp.29-36
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    • 2011
  • This study aims to be the useful resources for selecting play therapy facility in the future by analysis of used colors in the play therapy facility as the subsequent studies of the thesis of KIID in 2010, titled 'Study on the planning factors of case study for children's play therapy center'. As research method of this study, the overall understanding about play therapy facility was improved through theoretical considerations, and it was about the Moon-Spencer's theory of color harmony which will be used for the framework of case study. In Section 3, the field trips at 6 facilities were conducted as the case research and the data research through website was conducted for case study. Moon-Spencer's theory of color harmony used the Munsell's color Order System, so after measuring CMYK value of the picture for the case research through photo shop, the color, brightness and saturation were measured through Munsell Conversion program. The following three kinds of features were drawn by research of the harmony and disharmony of used colors for the cases after substituting the theory of color harmony through the measured color. brightness, and saturation. First. series Y and YR were used mainly for warm image as the concept of play therapy room. Second, the various colors were used for comfortable image like home. But the various patterns were used by mixing for the therapy room F, so it gives confusing impression. Third, series YR and achromatic color as the color of wood were used unavoidably for using materials of manufactured goods.

A fundamental study on the Color Perference and the Recognition of Color Names among College Students (대학생의 색기호와 색명 인지도에 관한 기초적 연구)

  • 이정옥;진현선
    • The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.11 no.3
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    • pp.63-70
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    • 1997
  • The objective of this study was to investigate the color preference and the recognition of color names among college students. The study revealed the following: 1) The most favorite colors included blue, purple, white and green in that order; and the least favorite colors included achromatic colors, ocher and red in that order. 2) Brown was the favorite color in furniture while red was the disliked color; In colthing, white was preferred while red was disliked; Red was appropriate for accent colors, and bright colors were for product packages. 3) In regards with seasonal image, yellow, blue, brown and white were associated with spring, summer, fall and winter, respectively; Blue represented self-image most. 4) Black, grey, red and green in that order showed the higest recognitions in color names while indigo, crimson, deep carmine and havy blue showed the lowesR ; Color name recognitions showed the order of achomatic, neutial, warm and cool colors.

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The additive mixture of induced colors by background colors in the afterimage (색채 잔상 지각에서 배경 색에 의해 유도된 색의 가산 혼합 현상 탐구)

  • Kim Sun Ah;Chung Chan-Sup
    • Korean Journal of Cognitive Science
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    • v.15 no.4
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    • pp.21-30
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    • 2004
  • Additive color mixture of two different background colors appeared in the afterimage of a gray circle centered on an isoluminant bichromatic background (red/green, blue/green, or blue/yellow background). The chromatic mixture still appeared in the afterimage of a gray circle on a bichromatic background at different luminance levels, and also appeared in a large test field. The saturation of the induced color was observed to increase as the overall luminance of adaptation background stimulus increase of the size of test field decreases. It was found that the chromatic mixture does not appear with a chromatic or achromatic boundary inserted on the center of the test field. The boundary seems to prevent the induced color on each side of test field from spreading to the other side so that the induced color does not appear mixed but divided into two different colors. Without a boundary on the test stimulus, the color information induced in the afterimage seems to be too weak to create a subjective boundary between the two colors and consequently propagate inward appearing mixed.

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A Comparative Analysis of Clothing Color of Women's Street Fashion between Korea and China -Focused on Seoul, Beijing, Dalian, Qingdao and Nanjing on 2015 S/S- (한·중 도시 간 여성 스트리트 패션 색채 비교 분석 -2015 S/S 베이징, 다롄, 칭다오, 난징, 서울을 중심으로-)

  • Baek, Jeonghyun;Oh, HyunA;Bae, SooJeong
    • Journal of Fashion Business
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    • v.20 no.2
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    • pp.107-123
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    • 2016
  • The purpose of this study is to obtain specific data about the characteristics of color preference on Women's street fashion within China and Korea. Photos of Women's street fashion from the twenties and thirties were taken in person in four cities in China(Beijing, Dalian, Qingdao and Nanjing) and Seoul from July 2nd to August 10th, 2015. Three hundred photos in each city were selected, making a total of 1,500 photos. In the analysis of the colors of the clothing in these five cities, the uses of the multi color was most frequent in Dalian, while those of Black was most prevalent in Beijing, Qingdao, Nanjing and Seoul. The Black proved to be commonly preferred through all the items, regardless of terms of the nationality, areas and seasonal changes. The high incidence of Purple Blue color in Beijing, Dalian and Qingdao might be attributed to their preference of the blue jeans. The Multi color was highly shown in all the cities which might be due to their preference of compound colors rather than the mono ones. The high preference for the chromatic colors such as Red, Yellow Red and Yellow might be ascribed to the Chinese traditional color preferences. The differences lies in the color tones, such as the dark and light grayish tone emphasized in Seoul and Nanjing, and vivid and strong tones in Beijing, Dalian and Qingdao. Seoul shows a liking for the achromatic colors, preferring dark and grayish tones, compared with four cities in China, only Nanjing has a similar trend to Seoul. This study analyzes geographical preferences in China that possibly contribute to the launching of Korean fashion brands in view of the design and marketing as a useful basic resources.

Modern Image Classification by Clothing Design Elements (의복의 조형요소에 따른 모던이미지 분류)

  • Lee, Kyung-Lim;Park, Sook-Hyun
    • Journal of the Korean Society of Clothing and Textiles
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    • v.30 no.8
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    • pp.1222-1233
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    • 2006
  • The purpose of this study was to classify the modern image by clothing design elements. This research was done by survey method with 25 kinds of modern image photos selected in fashion magazines. The data was analyzed by Reliability Analysis, Factor Analysis, MANOVA, One-Way ANOVA, Duncan's test and MDS. The results of this study are as follows: 1. modern image was classified by 5 factors. Those were sexy-modern, elegant-modern, natural-modern, mannish-modern and minimal-modern images. 2. Sexy-modern image was well-expressed by chromatic and chromatic color coordinations. Elegant-modern image was well-expressed by fitted silhouette, fit and achromatic and chromatic color coordinations. Natural-modern image was well-expressed by A silhouette, loose apparel-fit, chromatic and chromatic coordinations and soft texture. Mannish-modern image was well-expressed by H silhouette, loose apparel-fit, chromatic and chromatic color coordinations and hard texture. Minimal-modern image was well-expressed by H silhouette, tight or loose apparel-fit and soft texture. 3. modern image was positioned into mostly hard or masculine on image scale.

A Study on Visual Characteristic & Evaluation of the Super Graphic of High-raised Apartment Housing (고층 아파트 외관 슈퍼그래픽의 시지각적 특성 및 평가 성향에 관한 연구)

  • 최석창;양소진;유창균;이청웅
    • Journal of the Korean housing association
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    • v.14 no.6
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    • pp.147-154
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    • 2003
  • This study examines and analyzes the current status, characteristics and properties of Super-Graphic as a visual element with Super Graphic designed on the wall of apartment housing, typifies them and explains the preference and evaluative structure by each type. The results of this study are as follows: According to color environment of Super-Graphic, N-tone colors are 21.4% and YR-tone colors are 14.5%. In the whole distribution, cold color tone is 41.4% and warm color tone is 37.2%. In the brightness, 72.9% of the entire Super Graphic use high brightness and in the saturation, 51.2% show low saturation, achromatic colors are 21.4% and high saturation is 16.5%. As a result of conducting SD test to analyze the preference of Super-Graphic, 'wonderful' is most negative variable, followed by 'heterogeneous', 'splendid', 'romantic' variety'. Positive variables are 'monotone', 'stable' and 'calm'. As a result of factor analysis to reveal the evaluative structure of Super Graphic image based on the above results, five factors including brightness, saturation, stability, harmony and ordered are extracted and it is considered that these are important variables to be reflected in designing Super Graphic in future.