• 한국환경과학회지
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• 제10권6호
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• pp.431-436
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• 2001

Variations in phytoplankton concentrations result from changes of the ocean color caused by phytoplankton pigments. Thus, ocean spectral reflectance for low chlorophyll waters are blue and high chlorophyll waters tend to have green reflectance. In the Korea region, clear waters and the open sea in the Kuroshio regions of the East China Sea have low chlorophyll. As one moves even closer In the northwestern part of the East China Sea, the situation becomes much more optically complicated, with contributions not only from higher concentration of phytoplankton, but also from sediments and dissolved materials from terrestrial and sea bottom sources. The color often approaches yellow-brown in the turbidity waters (Case Ⅱ waters). To verify satellite ocean color retrievals, or to develop new algorithms for complex case Ⅱ regions requires ship-based studies. In this study, we compared the chlorophyll retrievals from NASA's SeaWiFS sensor with chlorophyll values determined with standard fluorometric methods during two cruises on Korean NFRDI ships. For the SeaWiFS data, we used the standard NASA SeaWiFS algorithm to estimate the chlorophyll_a distribution around the Korean waters using Orbview/ SeaWiFS satellite data acquired by our HPRT station at NFRDl. We studied In find out the relationship between the measured chlorophyll_a from the ship and the estimated chlorophyll_a from the SeaWiFs satellite data around the northern part of the East China Sea, in February, and May, 2000. The relationship between the measured chlorophyll_a and the SeaWiFS chlorophyll_a shows following the equations (1) In the northern part of the East China Sea. Chlorophyll_a =0.121Ln(X) + 0.504, R²= 0.73 (1) We also determined total suspended sediment mass (55) and compared it with SeaWiFS spectral band ratio. A suspended solid algorithm was composed of in-.situ data and the ratio (L/sub WN/(490 ㎚)L/sub WN/(555 ㎚) of the SeaWiFS wavelength bands. The relationship between the measured suspended solid and the SeaWiFS band ratio shows following the equation (2) in the northern part of the East China Sea. SS = -0.703 Ln(X) + 2.237, R²= 0.62 (2) In the near future, NFRDI will develop algorithms for quantifying the ocean color properties around the Korean waters, with the data from regular ocean observations using its own research vessels and from three satellites, KOMPSAT/OSMl, Terra/MODIS and Orbview/SeaWiFS.

• 대한치과교정학회지
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• 제23권3호
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• pp.327-340
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• 1993

The purpose of this study was to estimate the possibility of practical application of TiN ion-plating method on orthodontic appliances. TiN was coated on the surface of orthodontic stainless steel roll band by means of ion-plating method, and colorimetric properties of its obtained TiN film were investigated by using color analyzer. Also its corrosion and discoloration properties were compared with those of non ion-plated stainless steel roll band by using immersion test, which was done in 1N HCl solution for 10 days. Both weight changes and surface corrosion appearances of specimens for each day were respectively investigated by using electronic weighing machine and SEM(Scanning Electron Microscope). The discoloration degress of TiN-coated specimens immersed in 1N HCl solution were investigated by using color analyzer and then judged by N.B.S.(National Bureau of Standard) Unit. The results of this study were summarized as follows. o TiN ion-plated films showed the hue of 5Y, the value of 7, and the chroma of 3 by Munsell notations. o The weight losses and surface changes of TiN ion-plated specimens immersed in 1N HCl solution were less than those of non ion-plated specimens. It was shown, therefore, that the corrosion resistance was significantly improved by TiN ion-plating. o The discoloration degrees of non ion-plated specimens were too significant to be examined by color analyzer, while those of TiN ion-plated specimens were slight when judged by N.B.S. Unit. It was also apparent, therefore, that the anti-discoloration property was significantly improved by TiN ion-plating.

• 대한원격탐사학회지
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• 제12권1호
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• pp.1-16
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• 1996

한국항공우주연구소 총괄주관하에 개발 중인 다목적 실용위성(KOMPSAT) 1호기는 지도 제작, 해양관측, 우주과학실험에 활용할 지구저궤도용 실용위성으로서 고해상도 전자광학 카메라 (Electro-Optical Camera: ECO), 해양관측카메라(Ocean Color Images: OCI), 과학실험 탑재체 (Space Physics Sensor: SPS)를 탑재한다. 다목적 실용위성 1호기는 무게 약 500kg의 위성으로 고도 685km의 태양동기궤도에서 궤도주기 98분과 재방문 주기 28일을 갖는다. 본 위성은 1999년 8-9월 발사 예정이며 최소 3년의 궤도 수명을 갖는다. EOC는 한반도 표준 지도 제작을 위한 위 성영상정보 획득의 임무를 가지며, 가시광선 영역의 관측 파장 대역 510-730nm으로 주어지는 흑 백 단일 채널을 통해 수직촬영시 지상해상도 6.6m와 최소 15km 이상의 지상관측폭을 갖고 push-broom방식으로 한 궤도당 800km의 지상 길이를 촬영한다. OCI의 임무는 생물학적 해양지 리학 연구를 위한 전세계 해표면 색깔 관측이다. OCI는 다중 스펙트랄 영상 카메라로서 whisk-broom방식을 사용하여 지상관측폭 800km이내에서 1km 이하의 지상해상도를 갖는 6가지 색의 해표면 영상을 만들어낸다. OCI는 중심 파장이 443, 490, 510, 555, 670, 865nm인 6개의 관측 파장대역을 수시로 선정할 수 있다. SPS는 고에너지 입자 검출기(High Energy Particle Detector: HEPD)와 이온 측정기 (Ionosphere Measurement Sensor: IMS)로 구성된다. HEPD는 저고도 우 주 공간의 방사선입자 측정을 수행하며 이를 통해 우주방사선이 전자회로에 미치는 영향을 연구 할 수 있으며, IMS는 지구 이온층의 전자 밀도와 전자 온도 측정을 통해 KOMPSAT 궤도상의 이온층의 전지구적 특성 조사에 이용된다.

• 복식
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• 제47권
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• pp.33-46
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• 1999

The purpose of this study is to investigate the Aksu(握手) a kind of shroud This study classifies Aksu by its size shape cloths and color. Korean Aksu through literatures are as follows: The length of Aksu was one Ch'ok(尺) two Ch'on(寸) and the width of Aksu was five Ch'on. The surface pf Alsi were mostly black and the liniing was mostly red. The cloths of Aksu were Paek(帛) and Chu(紬). Aksu through relics was various in size and the cloths were Kongdan(貢緞) Myongchu(明紬) and Sa(紗) and the color was various. Actual conditions of current Aksu were various. The size shape cloths and color were more variable than the literatures and relics. The band of Aksu was all two. n the Chinese Aksu through literatures the length was one Ch'ok two Ch'on and the width waf five Ch'on The cloths of Aksu were Paek and Kyon. The surface of Aksu were mostly black and the lining was mostly red. Aksu in Munkonggaryoieuichul(文公家禮儀節) was tide by the strings of four corners. The Size of the Korean Aksu was the same as Chinese Aksu. The shape of the current Aksu was various than the literatures and relics.

• 천문학회보
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• 제35권1호
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• pp.54.2-54.2
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• 2010

The most massive galactic globular cluster, $\omega$ Cen has been observed using recently mounted WFC3/UVIS cameras of Hubble Space Telescope at both near-UV and optical bands. We present the photometry of stars in the central region of $\omega$ Cen in F225W, F275W and F336W bands. The near-UV color-magnitude diagrams and color-color diagrams of stars in $\omega$ Cen show multiple red giant branches and main sequences as already discovered in both ground-based and HST/ACS observations in the optical bands. We modelled the stellar populations of $\omega$ Cen using Yonsei Isochrone, where $\alpha$-particles and helium enhancement processes have been included properly. We compare the best-fit stellar populations obtained from the current near-UV observations to the suggested stellar population models based on optical band data. We also discuss the methodological issues arising when dealing with the near-UV observations; red-leak in near-UV filters and the huge interstellar extinction in near-UV bands compared to the optical bands and its non-linear effect in color-magnitude diagrams.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제12권2호
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• pp.676-692
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• 2018

Saliency detection in neurobiology is a vehement research during the last few years, several cognitive and interactive systems are designed to simulate saliency model (an attentional mechanism, which focuses on the worthiest part in the image). In this paper, a bottom up saliency detection model is proposed by taking into account the color and luminance frequency features of RGB, CIE $L^*a^*b^*$ color space of the image. We employ low-level features of image and apply band pass filter to estimate and highlight salient region. We compute the likelihood probability by applying Bayesian framework at pixels. Experiments on two publically available datasets (MSRA and SED2) show that our saliency model performs better as compared to the ten state of the art algorithms by achieving higher precision, better recall and F-Measure.

• 한국근적외분광분석학회:학술대회논문집
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• 한국근적외분광분석학회 2001년도 NIR-2001
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• pp.1526-1526
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• 2001

To improve the accuracy of sweetness sensor in automated sorting operations, it is necessary to clarify unevenness of the sugar content distribution within fruits. And it is expected that the technique to evaluate the content distribution in fruits contribute to the development of the near-infrared (NIR) imaging spectroscopy. Sugiyama (1999) had succeeded to visualize the distribution of the sugar content on the surface of a half-cut green fresh melon. However, this method cannot be applied to red flesh melons because it depends on information of the absorption band of chlorophyll (676 nm), which is affected by the color of the fresh. The objective of this study was to develop the universal visualization method depends on the absorption band of sugar, which can be applied to various kinds of melons and other fruits. The relationship between the sugar contents and absorption spectra of both green and red fresh melons were investigated by using a NIR spectrometer to determine the absorption band of sugar. The combination of 2$\^$nd/ derivative absorbances at 902 nm and 874 nm was highly correlated with the sugar contents. The wavelength of 902 nm is attributed to the absorption band of sugar. A cooled charge-coupled device (CCD) imaging camera which has 16 bit (65536 steps) A/D resolution was equipped with rotating band-pass filter wheel and used to capture the spectral absorption images of the flesh of a vertically half-cut red fresh melon. The advantage of the high A/D resolution in this research is that each pixel of the CCD is expected to function as a detector of the NIR spectrometer for quantitative analysis. Images at 846 nm, 874 nm, 902 nm and 930 nm were acquired using this CCD camera. Then the 2$\^$nd/ derivative absorbances at 902 nm and 874 nm at each pixel were calculated using these four images. On the other hand, parts of the same melon were extracted for capturing the images and squeezed for the measurement of sugar content. Then the calibration curve between the combination of 2$\^$nd/ derivative absorbances at 902 nm and 874 nm and sugar content was developed. The calibration method based on NIR spectroscopy techniques was applied to each pixel of the images to convert the 2$\^$nd/ derivative absorbances into the Brix sugar content. Mapping the sugar content value of each pixel with linear color scale, the distribution of the sugar content was visualized. As a result of the visualization, it was quantitatively confirmed that the Brix sugar contents are low at the near of the skin and become higher towards the seeds. This result suggests that the visualization technique by the NIR imaging spectroscopy could become a new useful method fer quality evaluation of melons.

• 패션비즈니스
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• 제19권1호
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• pp.77-94
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• 2015

Due to the inflammatory of body exposure it did not become popular to the Korean nation but the body painting as a body art is definitely required for it be become a new pure artwork. In this body painting color is the core factor for visual part and expression and coloring obtained from the color is very important in creating effective image. In Korea beauty industry the researches are limited to the study on coloring expression of general beauty makeup. Therefore, this research analyzes color images in recent body painting artworks by defining characteristics of colors and coloring applied by theme. For the research subjects, dominant and secondary colors were extracted from the artworks presented in preliminary and final rounds of year 2012 and 2013 World Body Painting Festival. For the selection of final coloring stimulation the most frequent coloring by theme was first chosen. Among them, 2 individual coloring bands were selected by theme among the high frequency colors. For the analysis of coloring image shown in body painting works total 8 coloring bands were created and they were compared and analyzed by indicating each divided coloring band on the coloring image scale by theme. In this research coloring image analysis was done after examining colors and coloring of artworks presented in World Body Painting Festival by theme. This research has its meaning that it provides information and guideline for coloring design work of body painting by analyzing coloring image used in color and coloring of body painting by theme.

• 감성과학
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• 제14권2호
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• pp.311-320
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• 2011

인간의 감성에 직접적인 영향과 자극을 주는 색상자극에 대한 생체반응을 정량적으로 분석하기 위하여 3가지 색상 자극(Bright Yellow Red (BYR), Deep Green Yellow (DGY), Vivid Blue (VB))에 대한 뇌파 생리선호(Electroencephalography, EEG)와 선호도와의 상관관계를 연구하였다. 뇌파 분석을 통해 얻은 생체신호는 일반적인 색상의 이미지와 밀접한 상관관계가 있었다. 색온도가 낮을수록 뇌가 활성화 되었고(BYR ${\geq}$ DGY > VB), 좌뇌보다 우뇌가 더 큰 생체반응을 보였다. 전체적으로 주파수 별 뇌파값은 베타파${\geq}$세타파, 알파파> 감마파의 순이었다. 색온도가 낮을수록 Beta파의 뇌파 power 증가(BYR ${\geq}$ DGY > VB)하였고, 그러고 나머지 파(세타파, 베타파, 감마파)의 경우에는 색온도가 낮을수록 이들 주파수의 뇌파 power가 증가(BYR ${\geq}$ DGY > VB)하였다. 색상별 선호도와 뇌의 활성화의 상관관계는 색상에 대한 선호도가 높을수록 특정 주파수대의 뇌파가 활성화되었다. 선호도에 따른 뇌파반응은 좌 우뇌간에 유사한 생리적 반응을 보였으나, 후두부 보다는, 전두부에서 뚜렷한 상관관계를 보였다. 이러한 결과는 선호도가 높은 색상자극을 통해 특정 주파수 영역의 뇌파를 활성화가 가능하며, 색을 이용하는 다양한 분야(뷰티산업, 인테리어, 색채치료, 의상 등)에 적용가능성이 높다는 것을 의미한다.

• 천문학회보
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• 제38권2호
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• pp.93.2-93.2
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• 2013

Polarization of the light scattered by the lunar surface contains information on the mean particle size of the lunar regolith, which gradually decreases by continued micro-meteoroid impact over a long period and thus is an age indicator of the surface. We performed multi-band (U, B, V, R and I) polarimetric observations toward the whole near side of the Moon at the Lick observatory using a 15-cm reflecting telescope with 1.1km/pixel spatial resolution at the center of the lunar disk. We analyze the color dependence of the polarization properties of the lunar regolith and discuss its implication for the study of lunar swirls.