• Journal of Ceramic Processing Research
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• 제19권6호
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• pp.479-482
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• 2018

Polystyrene superstructure films show faint rainbow color, and this low color saturation limits its wide application. In this paper, polystyrene superstructure films with single bright blue color were prepared by vertical deposition self-assembly method using polystyrene microspheres with average diameter of $310{\pm}10nm$ as raw material. Polystyrene superstructure films were modified by adding nano-carbon powder, and effect of the amount of nano-carbon powde on color performance was studied. The results showed that without addition of nano-carbon powder, the superstructure films showed a faint rainbow color, while with addition of nano-carbon power, the superstructure films exhibited a single bright blue under the same natural light source. Changing the amount of nano-carbon powder addition could adjust color saturation of the film. With increasing the amount of nano-carbon powder addition from 0.008 wt% to 0.01 wt%, color saturation of the superstructure film increased gradually. Further increasing the amount of nano-carbon powder addition to 0.011wt%, color saturation of the superstructure film didn't increase anymore and tended to get dark.

• 한국축산식품학회지
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• 제43권5호
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• pp.889-900
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• 2023

In this study, concentration levels of beet powder (BP) and caramel color (CC) were optimized to simulate beef color in meat analogs before and after cooking. The central composite design of response surface methodology (RSM) was used to set the levels of BP and CC, and the CIE L^*, CIE a^*, and CIE b^* were selected as the responses for RSM. After optimization, myoglobin-free beef patties were prepared with three optimized levels of BP and CC. When raw, all the patties had the same color as natural beef; however, CIE L^*, CIE a^*, and CIE b^* were statistically different from those of beef after cooking (p<0.05). Moreover, the use of BP and CC induced "browning" after the cooking process, with no excessive yellow color. Therefore, based on the overall desirability in the color optimization using RSM, the combination of BP (1.32%) and CC (1.08%) with the highest overall desirability can be used to simulate the color change of beef in meat analogs.

• 패션비즈니스
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• 제26권3호
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• pp.87-97
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• 2022

This study investigated the dyeability and color change of the natural dyes of SeaCell, a biodegradable functional fiber that is permanently added to cellulose fibers with natural additives extracted from seaweeds. The natural dyes used in the study are five dyes. Gardenia and turmeric, which are yellow-based natural dyes, Sappan wood and Lac, which are red-based natural dyes, and Indigo, a blue-based natural dye, were selected. The dyeability and color change according to the change of the mordant conditions and the number of times of dyeing were investigated. In addition, the dyeing properties and colors of cotton and silk fibers were compared under the same dyeing conditions as SeaCell. The study results are as follows. It was found that SeaCell had lower dyeing properties than silk, a protein fiber, in gardenia, sappan wood, and lac dyes, but had higher dyeing properties than cotton with the same cellulose component as SeaCell fibers. In the case of turmeric, it showed higher dyeing properties than cotton except for the no mordant condition. In the case of Indigo dye, SeaCell shows the best dyeability, indicating that it is a very suitable fiber for Indigo dyeing. As sustainable functional fibers are continuously developed in the future, natural dyes that are environmentally friendly and human-friendly are actively introduced and commercialized, and it is expected that they can be used as reference materials.

• 복식
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• 제61권5호
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• pp.77-92
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• 2011

Public uniforms play an important role in creating the color and image of urban environment beyond the level of simple working clothes for unity and practicality. Hence this study aims to compare and analyze the color characteristics and images of the police officer, fire fighter, and street cleaner uniforms at home and abroad to guarantee the wearer's safety, increase convenience and agreeability, and give emotional satisfaction to citizens in harmony with urban environment color as public uniforms. For study methods, literature review investigated urban environment, color, and uniforms as public design. Empirical study extracted color data from the public worker uniforms of the world's top 20 cities selected by 'Newsweek' in 2010 and analyzed their colors, tones, and color images. The results of this study are as follows. The most common color for police uniforms were PB(dk) as the main color, PB(p) as the sub color, and Wh as the accent color. For fire fighter uniforms, PB(dkg) was the most common main color; GY(v), as the sub color; and ItGy, as the accent color. The most common color for street cleaner uniforms was YR(v) as the main color; GY(v), as the sub color; and mGy, as the accent color. As a result of analyzing color images of these uniforms, it was found that police uniforms commonly used a modern image; fire fighter uniforms commonly used a natural image and a cool casual image; and street cleaner uniforms commonly used a casual image. As examined above, the color of public uniforms suitable for urban environment and job characteristics is very important to establish the image of public institutions, as well as to create an urban image.

• 트랜스-
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• 제11권
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• pp.119-142
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• 2021

영상은 이미지를 전제로 하는 문화적 실천이다. 영상이미지를 통해 관객은 일상이 아닌 새로운 것을 체험하기를 갈망한다. 영상이미지의 구성 요소는 많지만 그중에 시각적 표현인 색채가 큰 역할을 담당하고 있다. 컬러영화가 등장하기 시작하면서부터 색채는 영상예술의 중요한 구성요소로서 끊임없이 발전하고 혁신적인 영상미술 디자인에서 중요한 역할을 하였다. 영화인들은 1895년 영화가 흑백으로 탄생할 때부터 색채에 대한 관심이 있었다. 이 두 가지 색채로 더 이상 시청자를 만족시키지 못했기 때문에 필름에 색채를 입히는 등 더 많은 색채를 영화 속에서 표현하려고 노력했다. 영상에서의 색채는 표현의 기법이면서도 정신과 사상으로 이해할 수 있다. 색채가 단순히 그냥 존재하는 것이 아니라 인간심리에 강하게 작용하고 있음에 일러주는 것이기도 하다. 색채는 영화 언어의 일부로, 색채언어는 영화 속에서 영화의 사상적 주제를 표현하거나 선명한 캐릭터를 묘사할 수 있으며, 사람들에게 더 직관적으로 메시지를 전달할 수 있다. 본 연구는 색 조명 방식 혹은 배색 방안인 바이섹슈얼 라이팅을 대상으로, 그의 기본적인 색채 구성요소, 즉 핑크색, 파란색 및 보라색이 갖고 있는 색채 특성을 이해해 색채를 통해 인간심리가 어떤 영향을 받고 있는 지에 대해 분석하고 바이섹슈얼 라이팅이 영상에서 나오는 장면들을 결합해 구체적인 사례분석을 했다. 이를 통해 바이섹슈얼 라이팅이 영상에서 색채 속성을 이용해 표현한 색채 언어가 무엇이고 바이섹슈얼 라이팅이 어떻게 색채를 통해 인간심리와 상호 작용하는지를 탐색하였다.

• ETRI Journal
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• 제9권3호
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• pp.115-126
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• 1987

자연화(Natural Image)는 CCITT SG Vlll에서 통용되는 기술용어로서 정지된 컬러 영상(Still Full Color Image)을 의미한다. 자연화는 많은 정보를 내포하고 높은 신뢰도를 갖기때문에 자연화 통신기술의 중요성이 날로 증대되고 있다. 본고에서는 자연화 통신에 필요한 영상정보 압축기술의 현황을 분석하고 또한 국제표준화 기술동향을 설명하였다.

• 한국식품과학회지
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• 제43권6호
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• pp.754-759
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• 2011

본 연구는 세포의 사멸 및 성장변화 등의 평가에 널리 이용되는 MTT assay에서 생성된 formazan dye에 미치는 ZnPP의 영향을 조사하였다. ZnPP는 생체 내에 자연적으로 생성되거나 다양한 관련 실험에 인위적으로 첨가해주는 물질로서, MTT formazan dye의 빛에 의한 탈색을 가속화시키는 것으로 밝혀졌다. Formazan dye의 분해는 5와 $10{\mu}M$ ZnPP 존재 시 반감기를 기준하여 각각 10 및 20배 가량 가속화되었으며, 빛이 차단된 조건에서는 영향을 미치지 않았다. ZnPP 구조 중 Zn는 formazan dye의 탈색에 영향을 미치지 않았으나, porphyrin 구조와 공통적인 감광체 성질을 나타내는 MB에 의해서 ZnPP 존재 시와 유사하게 dye의 탈색을 가속화 시켰다. 이러한 ZnPP와 MB에 의한 formazan dye의 탈색반응은 NAC와 ${\beta}$-carotene에 의해 지연되었으나, BHT에 의한 저해효과는 나타나지 않았다. 본 결과는 세포 중에 존재하는 ZnPP 등의 감광체류가 MTT tetrazolium으로부터 환원된 formazan dye의 빛에 의한 신속한 분해를 유도하며, 관련 실험에서 빛의 차단 등의 조치와 함께 각별히 유의해야함을 시사한다.

• 한국염색가공학회지
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• 제22권2호
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• pp.101-109
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• 2010

The objective of this study is to investigate the characteristics of natural indigo dyeing of cotton fabric. Reduction and dyeing were carried out by one-step process using an infrared dyeing machine at the liquor ratio of 1:100, and subsequently oxidation and washing in water were followed. Dye uptake was increased with the increase of indigo concentration. Over the full range of dyeing tests, the dyeing condition was optimized to $40^{\circ}C$ for 40min. For most of dye concentrations, the cotton fabrics showed mainly PB color. Maximum K/S value was shown at 4g/L of sodium hydrosulfite concentration and the color strength increased with the increase of dye concentration. Value(lightness) decreased with the increase of dye uptake irrespective of mercerization or reduction method, while the mercerized cotton showed two times higher dye uptake than the untreated cotton. Whereas hue of the untreated cotton showed large decrease of P character(5.6~3.5 PB) with the increase of dye uptake, that of the mercerized cotton increased P character(4.7~5.5 PB). Irrespective of mercerization, value and chroma decreased with the increased of dye uptake. In addition, the untreated showed lower chroma than the mercerized cotton. In the case of traditional reduction, hue of the untreated cotton was changed very little with the increase of dye uptake. For hydrosulfite reduction, P character decreased with the increase of dye uptake. The difference of hue value was small with the change of reduction method(hydrosulfite reduction or traditional fermentation). Color character was not influenced by the changed maximum absorption wavelength. Washing fastness showed 4~4/5 shade change rating without any staining. And dry rubbing fastness was good at low color strength. The bacterial reduction ratios of dyed cotton fabric were also increased.

• 패션비즈니스
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• 제11권1호
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• pp.136-148
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• 2007

African marigold is a common plant easily available in many flower beds. It has been reported as a practical and prospective resource of dyes since the dyes can be extracted from their bodies as well as petals. In this research, cotton and ramie fabrics which are made from natural cellulose were dyed using the extract of the African Marigold which is a variety of marigold. Dyeing tests were carried out under different pH of the dye solution and mordants. Dyeability was evaluated by examining and measuring surface color, K/S value, and the changes in the maximum absorption wavelength. The probability of improving dyeability was investigated by pre-mordanting with pre-treated chitosan. For the dyeing with marigold extract, the color tone did not differ by pre-mordanting and non-mordanting. Reaction with post-mordanting was excellent, which was colored in various yellow series. The best dyeability was achieved in dye solution of pH 6.5-7.0 which is not conditioned. The largest K/S value and color difference were obtained in tin mordanting. The dye uptake was greatly increased in chitosan pre-treated mordanting compared with the post-mordanting without chitosan pre-treatment. Due to its high heat resistance, African Marigold extract is easy for dye extraction and dyeing, and its dyeability is excellent for natural cellulose fibers. Also, colorfastness was proved to be practically usable.

• 한국전자통신학회논문지
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• 제13권1호
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• pp.175-186
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• 2018

지구 온난화로 인해 홍수나 집중 호우와 같은 자연 재해들이 증가하고 있다. 이러한 자연 재해들이 미리 그리고 효과적으로 인지될 수 있다면 재해로 인한 많은 피해들을 미리 막을 수 있을 것이다. 최근 비쥬얼 센서 기술의 발전을 바탕으로 재해를 예방하기 위해 하천을 포함한 다양한 자연환경을 감시하는데 비쥬얼 센서 기술을 적용하는 연구들이 많이 진행되고 있다. 이 논문에서는 비쥬얼 센서 네트워크 기술을 이용한 하천 감시 시스템에 적용 가능한 강물 영상에서 강물 영역을 분할하는 방법을 제안한다. 제안하는 방법에서는 먼저 강물 영역과 배경 영역의 색상에 대한 분석을 하고 그 결과를 바탕으로 영상 분할에 가장 효과적인 색상 채널을 선택하고 이진화를 통해 강물영역을 검출한다. 실험 결과는 제안하는 방법이 간단하면서도 정확하게 강물 영상에서 강물 영역을 분리하는 것을 보여준다.