• 공업화학
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• 제21권5호
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• pp.559-563
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• 2010

천연색소를 이용한 컬러의 재현은 현대의 웰빙 생활과 밀접한 연관성을 갖게 된다. 이 연구는 일상생활에서 자주 쓰이는 녹색 계, 황색 계, 그리고 적색 계의 컬러를 자연 상의 녹차, 치자, 흑미를 색소원으로 하여 목표 색을 설정하였다. 목표색의 명도(L), 색 좌표(a, b)의 정량적 수치 값을 지정하고 추출용매의 물성을 조절함으로써 목표 색에 가장 접근하는 색을 추출하여 표현하였다. 색소추출 공정에서 용매의 pH, 추출온도, 추출시간이 변수로 설정되었다. 치자의 경우 추출시간이 길수록 진한색이 추출되었다. 추출색소는 색차계를 이용해 색의 L-a-b좌표를 측정하여 목표 색과 비교하였다. 실험조건을 최적화함으로써 목표 색과 가장 색차 값(${\Delta}E$)이 적은 녹색, 황색, 적색의 CIE 기준 값을 제시하고 이 좌표에 맞는 색을 표현하였다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2000년도 추계종합학술대회 논문집(4)
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• pp.259-262
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• 2000

One of the major factors determining the printing quality of a color printer is the color matching that is performed inside the printer driver In this paper, the mini driver for the color printer is built using the Microsoft 98DDK. Also, the ICC profile proposed as the standard for the color management system is generated. The color matching capability of the mini driver with the ICC profile is examined and compared with that of the commercial printer driver.

• 복식
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• 제56권1호
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• pp.70-80
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• 2006

The purpose of this study is to investigate types and formative characteristics of 'Seon' represented of costume in Water-moon Avalokitesvara of the late Koryo Dynasty. The results were as follows; 'Seon' has two main types, Standard and Decoration types. In the former type, Seon has not any decoration. While, in the latter, Seon is added with decorations. Here, Seon of decoration type can be reclassified into two types, same color and pattern and different color and pattern. Seon most appeared in the Water-moon Avalokitesvara had the type of Decoration, especially different color and pattern. Patterns used for Seon were complex in its composition type and filling in its arrangement style. Seon was mainly used to Guneui(裙衣) and Samkaksika(僧脚崎). For the color combination of Seon, the combination of similar colors was most often used and that of same color was somewhat frequently done. Regarding costumes aesthetic characteristics in accordance with the type of Seon, those costumes appeared natural and elegant when their Seon was Standard in type, natural and brilliant when same color and pattern in type and artificial and brilliant when different color and pattern.

• 터널과지하공간
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• 제12권1호
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• pp.1-9
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• 2002

최근 암반공학 분야에서 영상분석기법 및 상용 영상분석장비의 활용이 활발히 이루어지는 추세이다. 그러나 영상의 획득 및 분석 단계에서 발생 가능한 오차들의 문제에 대해서 많은 부분 무시되어 왔으며 관련 연구 또한 미비하였다. 객관적인 암석영상의 분석 및 신뢰도 향상을 위해서는 암석영상에 적합한 컬러보정기법의 마련이 필요하다. 이에 본 연구에서는 암석영상에 대하여 표준컬러차트를 이용한 컬러보정기법을 도입하였으며, 화강암 시료를 대상으로 획득된 영상에 대하여 컬러보정과 오차분석을 수행하였다. 그 결과 암석영상들간의 상호 비교분석이 가능하였으며 또한 영상 획득 및 분석 단계의 신뢰도 향상을 꾀할 수 있었다.

• 한국의류학회지
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• 제40권3호
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• pp.456-464
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• 2016

A new combat uniform is improved for added combat safety with various functions such as survivability, battle conformity and a camouflage performance system. Camouflage performance is an important factor in terms of combat survivability since it makes identification difficult and provide security. The combat uniform is worn under extreme conditions (exposure to ultraviolet light, sweat and friction) and an excellent color fastness to repeated washing is required. In this study, we investigated the color management, durability and discoloration of new combat uniform fabric with a digital pattern for camouflage performance to provide preliminary color management data. We examined color differences between standard fabric and mass-produced combat uniform fabrics, color differences between each military supply contract firm and color changes in combat uniforms after 60 washing cycles. The slight color differences between standard fabric and mass-produced combat uniform fabrics were tolerable under quality criteria of Republic of Korea Ministry of National Defense. However, the differences between the military supply contract firms were recognizable to the naked eye and increased with repeated washing. Continuous research on color fastness under repeated washing and color management is required to standardize reliability from each military supply contract firm for the daytime performance of a combat uniform's camouflage.

• 전자공학회논문지S
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• 제34S권6호
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• pp.38-45
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• 1997

Skin color reappearance problem in color processing system is necessary to transform a specific color sand improve color reappearance quality as a reference color. The skin color has been situated as an important memory color not only in our lives but also in color application systems such as TV. Thus, skin color reappearance problem is more important than other color processing problem. In this paper, we propose a skin color reappearance algorithm for color enhancement in TV which use phase detector to detect the skin colors at real-time from 3.58 MHz color burst signal and color signal, comparators to discriminate the types of skin color, and micom to reprodece standard skin colors for races.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 하계종합학술대회 논문집(4)
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• pp.307-310
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• 2002

Color reproductions in most ink jet printer are quite different from that of standard CRT (cathode ray tube) monitor display because of the nonlinear characteristic in subtractive color reproduction. Gray scale CCT(correlated color temperature) reproductions in a typical printer are vary with the input RGB level. A simple method for making constant gray scale CCT and gamma value in photo paper is proposed in this paper. The compensation of the CCT with white point of the photo paper under the CIE standard illuminant D65 and color correction has been confirmed using the LUT(look-up table) to compensate the CCT and gamma curve characteristic.

• 대한원격탐사학회지
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• 제16권4호
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• pp.315-325
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• 2000

Observations were made to validate ocean color algorithms in the Ulleung Basin, East Sea in May 2000. Small scale and meso-scale surveys were conducted for the validation of ocean color products (nLw: normalized water-leaving radiance and chlorophyll concentration). There were discrepancies between SeaWiFS and in situ nLw showing the current aerosol models of standard SeaWiFS processing software are less than adequate (Gordon and Wang, 1994). Applying the standard SeaWiFS in-water algorithm resulted in an overestimation of chlorophyll concentration. This is because that CDOM absorption was higher than the estimated chlorophyll absorption. TSS concentration was also high. Therefore, the study region deviated from Case 1 waters. The source of these materials seems to be the entrainment of coastal water by the Tsushima Warm Current. Study of the bio-optical properties in other season is desirable.

• International Journal of Advanced Culture Technology
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• 제10권3호
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• pp.332-338
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• 2022

The article presents a concept of designing a Multiplexer circuit which acts as a "Selector" and that becomes capable to select different speed created at different TTL Gate configurations; Standard TTL(Normal Speed), High Speed TTL(High Speed), Schottky TTL(Super High Speed) and further connect the selected Gate speed to the CAR shape created using C-Programming at Computer Graphics and finally CAR shape display at different speed to the color TV. The Multiplexer supporting efficient and more reliable selection criteria using "Logical based selection criteria" and further the output from multiplexer is provided to CAR shape created using c-programming and finally CAR shape is display to color TV system. Basic purposes and assumptions regarding the design and development of this system as well as a description of its operation have been presented.

• 한국정보통신학회논문지
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• 제12권8호
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• pp.1356-1362
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• 2008

본 논문에서는 카메라가 가지는 대표적인 기능중의 하나인 자동 화이트 밸런스에 대한 알고리즘을 제안한다. 화이트 밸런스는 흰색의 물체나 물건 고유의 색이 아닌 부분들을 제거하는 과정이다. 화이트 밸런스를 수행하기 위해 사람의 눈에 의해 느끼는 시각차와 색차의 표현이 동일한 $CIEL^*a^*b^*$ 색 공간에서 영상의 분포를 분석하여 흰색 물체의 색 변화 정도를 추정한다. 이를 기준 백색 추정이라 한다. 정확한 추정을 위하여 환경에 의해 변화되었다고 추정되는 부분에 대해 그룹화 한다. 그룹화 된 영상 정보를 통해 영상의 특성을 파악하여 기준 그룹을 정하여 기준 그룹까지의 누적 픽셀들을 선택하는 컬러 샘플링하여 기준 백색을 추정한다. 또한 영상 보정을 위한 컬러 이득은 영상의 포화(Saturation)를 고려하여 얻어진다. 이를 통한 제안된 자동 화이트 밸런스 알고리즘은 뛰어난 영상 보정 기능을 가진다.