• Title/Summary/Keyword: Color space

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Color Correlogram using Combined RGB and HSV Color Spaces for Image Retrieval (RGB와 HSV 칼라 형태를 조합하여 사용한 칼라 코렐로그램 영상 검색)

  • An, Young-Eun;Park, Jong-An
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.32 no.5C
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    • pp.513-519
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    • 2007
  • Color correlogram is widely used in content-based image retrieval (CBIR) because it extracts not only the color distribution of pixels in images like color histogram, but also extracts the spatial information of pixels in the images. The color correlogram uses single color space. Therefore, the color correlograms does not have robust discriminative features. In this paper, we use both RGB and HSV color spaces together for the color correlogram to achieve better discriminative features. The proposed algorithm is tested on a large database of images and the results are compared with the single color space color correlogram. In simulation results, the proposed algorithm 5.63 average retrieval rank less than single color space correlogram.

Generation Method of Color Gamut Mapping Look-up Table Uniformly Selected in the CIELAB Color Space (CIELAB 색공간에서 균일한 분포를 갖는 색역사상 참조 테이블 생성 방법)

  • 오현수;이철희;곽한봉;서봉우;안석출
    • Journal of Korea Multimedia Society
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    • v.4 no.4
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    • pp.316-323
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    • 2001
  • Gamut mapping is a technique that acts on cross-media color reproduction to transform a color between devices for the purpose of enhancing the appearance or preserving the appearance of an image. Gamut mapping essentially produces color conversion error which depends on the gamut mapping method, source and destination devices, and sample points for gamut modeling. For color space conversion between monitor colors and printer colors, empirical representation using sample measurements is currently widely utilized. Color samples are uniformly selected in the device space such as CMY or RGB, represented as color patches, and then measured. However, in the case of printer, these color samples are not evenly distributed inside the printer gamut and the color conversion error is increased. Accordingly, this paper introduces a equally distributed color sampling method in CIELAB space, a device- independent color space, to reduce color conversion error, and the performance is analyzed via color space conversion experiments using three-dimensional interpolation.

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A Study on the Color Membership Computation Method using Fuzzy Color Model (패지 컬러 모델을 이용한 컬러의 소속 정도를 결정하는 방법에 관한 연구)

  • Kim, Dae-Won;Lee, Kwang. H.
    • Proceedings of the Korean Information Science Society Conference
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    • 2002.04b
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    • pp.262-264
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    • 2002
  • In this paper we focused on the color representation prob1em based on fuzzy set theory. The main factor is the determination or computation of color membership function and color difference formula. The mathematical formula to calculate the color difference should generate a uniform color scaling, and due to this reason we adopted a CIELAB color- space as a fundamental feature space. With the help of the CIELAB color space we created a new color model, referred to fuzzy color model, which can represent the ambiguous characteristics underlying colors. Based on the proposed color difference formula between fuzzy colors, we could obtain the membership computation method of an arbitrary color for a given color family.

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A Study on the Characteristic of Color use Scheme in Luis Barragan's Architecture (루이스 바라간 건축의 색채사용 특성에 관한 연구)

  • Yoo, Yeon-Sook
    • Journal of the Korea Furniture Society
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    • v.24 no.4
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    • pp.416-425
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    • 2013
  • Luis Barragan's Architecture has creative feature that Mexican environment and traditional culture were complete by color. Thus the color of his work makes our emotions rich and colorful. He said "My architecture is autobiographical..." at speech in Pritz price. As we can see in his architectural philosophy that sentimental architecture is important than theorical system, his works are impression of empirical factor with intuition. "Color is a complement to the architecture. It serve to enlarge or reduce a space. It's also useful for adding that touch of magic a place needs", stated Barragan. During his process of shaping space, Barragan drew on color in the same way as an architectural component, according it a spatial funtion and expressive vale. he allied it with light, deeming it a crucial vehical for conveying the emotive attributes a site. The capacity of color to express sensitivity and sensuality within an architecture space is liked to its psycho-physiological qualities. In this kind of view, color featyre in Barragan's work is one of the most important tools to realize sentimental architecture, not only is result of the Mexican regional color. As a result, make focus on analyzing various meaning of the color in Barragan's architecture like poetic and habitable structure.

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A Study on the Characteristics of Blur Color in Olafur Eliasson's Works (올라퍼 엘리아슨의 작품에 나타난 블러 색채 특성 연구)

  • Kim, Sun-Young
    • Korean Institute of Interior Design Journal
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    • v.21 no.3
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    • pp.87-94
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    • 2012
  • This thesis has purpose of explaining that blur color is not only appreciated but also undecided spacial color in contemporary space design and examining effects of space experience through the light. In keeping such developments, blur color has been perceived as the object of another tool in contemporary space and has provided us with new views by providing various program, sensor and screen from digital media. With the expansion of blur color, light has changed a spacial color structural that is not simple meaning factor into the essential concept. So this research aims to understand the principle of blur color in Olafur Eliasson's work, which of the fine artist in diverse fields from installation art to media art. The principle of blur color such as deconstruction of vanishing point, dimensional transfer, color gradation, and fiction of visual perception makes it possible to extract the expressed element and method of blur color. Meanwhile, the features of blur color such as sense of depth from viewpoint changes, hybrid from collapse of order, media metamorphosis from reconstitution and interaction from uncanny can be inferred from case analysis.

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A Study on the Reds of Kyungbok Palace (경복궁에 표현된 붉은색에 관한 연구)

  • Jeong, Yoo-Na
    • Korean Institute of Interior Design Journal
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    • no.34
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    • pp.114-123
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    • 2002
  • Koreans have regarded the red as a major color from old times. The red is a traditional color to have symbols of high position, national foundation and especially royalty. So, we can see the reds in the palace for kings very much.The purpose of this study is to draw out the features of color red in the Kyungbok palace. The color was analyzed by two categories-architectural buildings${\cdot}$structures and ornamental painted patterns. The major findings from this research are summarized as follows:1. Seokganju(similar to terra rossa) and toyugsaek(light seokganju) are found main colors in architectural space, while seokganju has a linear effect and toyuk has a facial effect. 2. Yugsaek(similar to light vermillion) and Jangdan(similar to orange) are found main colors in ornamental painted patterns. These colors are more vivid and brighter than those for architectural space.3. As for two-color combination, reds and blues(including greens) are found major combination both of architectural space and ornamental patterns. And reds and white are the following combination, which gives an bright image by white. 4. As for three-color combination, red-white-black combination of pediment and red-blue-white combination of openings are found very popular in architectural space, while red-blue-yellow combination is most popular in ornamental patterns.The reds are found dominant color of both architectural space and ornamental patterns in the Kyungbok palace. The color design as shown in the Kyungbok palace can be considered as the feature of traditional color design.

Some requirement on future flat panels

  • Matsuda, Hirotoshi
    • 한국정보디스플레이학회:학술대회논문집
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    • 2004.08a
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    • pp.3-7
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    • 2004
  • Two different kinds of subjects are discussed. One is " Enhanced color space for displays" and the other one is"An application for large format displays". Originally defined color space by NTSC has never been used widely for TVs and information displays as there have been no available display devices. LCD panels with new light sources for backlighting will provide much wider color space. LCD monitors which use these new panels will meet almost 100% with the color space defined by NTSC or Adobe. Now, It is the time to deploy wider color space defined by such as the NTSC or Adobe as the standard of LCD display panels. As the large format display devices with reasonable price have not been available till plasma panels became available, application of these panels as an information display in public space is a quite new experience for us. Various kinds of practical applications are observed and coming out. It will generate many and new types of businesses.

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A Comparison Study on Color Planing and Application in interior space of subway station (지하철 정거장 내부공간의 색채계획과 적용에 관한 비교 연구)

  • Woo, Shin-Koo;Cho, Youn-Kyoung
    • Korean Institute of Interior Design Journal
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    • v.16 no.2 s.61
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    • pp.51-62
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    • 2007
  • The subway lines have been expanded to solve the traffic problems in Korean cities, so that a big number of people daily use the subway stations. Therefore, subway stations became a kind of public space as well as traffic space. However, the underground space of the stations are essentially different with the aboveground space in terms of environmental and psychological terms. The color planning can be used to reduce the environmental and psychological disadvantages of underground spaces of subway stations. The purpose of this study is to understand the current design methods of subway stations' color planning. To achieve this purpose, this study investigates all reports of 'Color Planning for the Subway' which were used for the construction of subway lines in 6(six) Korean cities. After analyzing the design theories and methods used for the color planning, field studies have been done upon 10 subway lines of 6 cities, to find out the limitations of color planning, the differences between color planning and actual results. The conclusions are as follows : First, the color planning for subway stations does not seem to consider the characteristics of underground space and its psychological effects, such as the depth of station, the lighting source and methods. Second, some critical differences have been found between the color planning and the actual application during construction, due to arbitrary interpretation and limitations of color expression of the construction materials. Third, and therefore, the colors applied in stations do not perform their planned role such as 'variety in the unity', 'symbolic expression of the city and station'.

A Study on the Application Method of Look-up Table to Color Printing Process (컬러인쇄공정에 대한 룩업테이블의 적용방법에 관한 연구)

  • 송경철;강상훈
    • Proceedings of the Korean Printing Society Conference
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    • 2000.12b
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    • pp.17-28
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    • 2000
  • Recently, as the prepress mainstream is changed to the digital workflow, various digital proofing systems such as high price dye sublimation printers and low price ink jet printers are widely used in printing industry. However, most of the digital proofing devices have lower resolutions than analog proofing systems and differ with actual color presses in the color gamuts. Therefore, proper color compensations are needed for digital color proofing in order to match color between the proofs and the press sheets. In this paper, we used 3-dimensional look-up table(LUT) and tetrahedral interpolation method for the color space conversion between the device independent color space(CIEXYZ or Lab) and the device dependent color space(CMY) to reduce the color differences between the original copy and digital color proofs and the press sheets.

A Study on the Present Condition of Color Plan considering the Resident's Characteristic in Housing Space (거주자특성을 고려한 주거공간 색채계획 현황조사 연구 - 거주자 특성을 고려한 주거공간 색채계획에 관한 연구 I -)

  • Kim, Soon-Mi;An, Ok-Hee;Seo, Ji-Eun
    • Proceeding of Spring/Autumn Annual Conference of KHA
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    • 2009.11a
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    • pp.235-239
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    • 2009
  • The purpose of this study is to apply the basic data of the color plan to satisfy the internal desire of residents by considering residents's special in housing space. So we analyzed and surveyed the current condition of color plan in housing space where age units of 30~40 are living. The results of this study are as followed. when the current place of color distribution was observed, ceiling and general wall showed that N(white) systems and YR of bright tone was mostly distributed. On other hand the bottom showed that the calm tone YR was mostly distributed. we could know that residents wanted to show the special of rooms by using point wall. This tendency more presented in privacy room than public room. Through this study, we could evaluate that the special of residents is not presented in color plan of the housing space where age units of 30~40 are living. So we could think that it is needed methods of color plan considered the special of residents for discriminative characteristic of the design in housing space.

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