• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2010년도 춘계학술대회
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• pp.160-161
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• 2010

본 논문에서는 컬러 정보와 형태 정보를 이용한 상표 영상 검색 시스템을 제안하였다. 컬러 정보는 영역을 분할하여 영역별 컬러 분포 히스토그램 특성에 근거한 컬러 정보를 이용하였고, 형태 정보는 경계면 추출, 무게 중심 추출, angular 샘플링 등의 전처리 과정과 무게 중심으로부터 경계면까지 거리의 합, 표준 편차, 장/단축 비율을 계산을 이용하였다. 특히, 무게중심을 이용한 angular 샘플링을 이용하여 특징을 추출하고 처리 시간을 줄일 수 있었다. 사용자는 컬러와 형태 정보에 의한 검색을 수행하고, 또한 가중치를 부여함으로써 두 방법을 혼합하여 사용할 수 있다.

• 한국식품조리과학회지
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• 제17권2호
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• pp.149-155
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• 2001

Namul cooked with the standard recipe was examined by research of microbiological test for three months and sensory evaluation of frozen namul after reheating. When the namul was freezed storage, in the microbiological test namul began to change on the 40th day, but there was no problem about stability of storage until 3 months. The overall qualities of taste, flavor, color and texture were examined by sensory evaluation of frozen namul after reheating. The pH was seemed to change slowly, its color was changed on the 20th day from the beginning of storage. Radish root represented substantial difference in texture and overall quality on the 20th day. The off-flavor of immature pumpkin stated on the 25th day. Later 10days nettle tree mushroom began to be changed in its taste, texture, overall quality and appearance, then on the 25th day it was seemed to have low preference. But oak mushroom kept its quality good for 25 days. Oyster mushroom was changed in color, appearance and overall quality on the 20th day. Bracken had low preference in taste, texture and moisture on the 25th day. The color of spinach was changed on the 15th day, and its taste on the 20th day. Soybean sprout was changed in taste, texture and overall quality on the 15th day, and overall quality marked low preference on the 25th day Root of bell flower was changed on the 25th day(p<0.05).

• 한국응용과학기술학회지
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• 제38권6호
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• pp.1654-1666
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• 2021

본 연구에서는 뷰티메이크업의 입술 디자인에 따른 인상형상, 선호 입술과 그 이유를 실증분석 하였다. 연구방법은 설문조사법으로 SPSS프로그램을 활용하였다. 연구 결과 입술의 색상과 형태가 인상 형성에 미치는 유의미한 영향을 확인하였으며 입술 화장에 관한 현대인들의 시각을 규명 할 수 있었다. 가장 선호하는 입술색상은 레드, 선호하는 입술의 형태는 표준형이었다. 요인분석 결과 입술 색상 중 레드는 유능성요인이 핑크색상은 사교성 요인이 가장 높게 나타났다. 본 연구가 뷰티디자인의 기초자료로서 활용되기를 기대한다.

• Corrosion Science and Technology
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• 제23권2호
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• pp.139-144
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• 2024

Recently, due to the rapid spread and continuation of COVID-19, customer demand for health and hygiene has increased, requiring the development of new products that express antiviral and antibacterial properties. In particular, viruses are much smaller in size than bacteria and have a fast propagation speed, making it difficult to kill. POSCO has developed eco-friendly PCM color coated steel sheets with excellent antiviral properties by introducing inorganic composite materials to the color coating layer on the surface of Zn-Al-Mg alloy plated steels. The virus is not only destroyed by adsorption of metal ions released from the surface of the coating film, but is also further promoted by the generation of reactive oxygen species by the reaction of metal ions and moisture. As a result of evaluating the developed products under the International Standard Evaluation Act, the microbicidal activity was 99.9% for viruses, and 99.99% for bacteria and 0% fungi. In particular, excellent results were also shown in the durability evaluation for life cycle of the product. The developed product was applied as a wall of school classrooms and toilets and ducts for building air conditioning, resulting in excellent results. Developed products are being applied for construction and home appliances to practice POSCO's corporate citizenship.

• International Journal of Internet, Broadcasting and Communication
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• 제16권2호
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• pp.22-30
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• 2024

Image compression-decompression methods have become increasingly crucial in modern times, facilitating the transfer of high-quality images while minimizing file size and internet traffic. Historically, early image compression relied on rudimentary codecs, aiming to compress and decompress data with minimal loss of image quality. Recently, a novel compression framework leveraging colorization techniques has emerged. These methods, originally developed for infusing grayscale images with color, have found application in image compression, leading to colorization-based coding. Within this framework, the encoder plays a crucial role in automatically extracting representative pixels-referred to as color seeds-and transmitting them to the decoder. The decoder, utilizing colorization methods, reconstructs color information for the remaining pixels based on the transmitted data. In this paper, we propose a novel approach to image compression, wherein we decompose the compression task into grayscale image compression and colorization tasks. Unlike conventional colorization-based coding, our method focuses on the colorization process rather than the extraction of color seeds. Moreover, we employ the Denoising Diffusion Null-Space Model (DDNM) for colorization, ensuring high-quality color restoration and contributing to superior compression rates. Experimental results demonstrate that our method achieves higher-quality decompressed images compared to standard JPEG and JPEG2000 compression schemes, particularly in high compression rate scenarios.

• 복식
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• 제58권2호
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• pp.62-77
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• 2008

This study aims to analyze color characteristics centered by women's suit styles that represent masculinity remarkably. Through this, it figures out color's type and continuance availability as a representing tool to express masculinity to provide useful color information which can be applied effectively to various color planning. For this research, related images were collected among women's pants suits appeared in $2004{\sim}2006's$ Paris, London, New York and Milan collection F/W that are most similar to modern man's suit. Among them, the study analyzes 319 pictures where the features of masculinity were represented effectively. The referred color values were earned by converting $L^*a^*b^*$ values measured through the color extracting tool of Computer program (Adobe Photoshop CS) and color tone characteristic were analyzed by classifying 12 color PCCS and 5 achromatic colors. The result of the study are as follows: First, based on standard of color hue and tone, in terms of color hue, PB, YR, Y were frequently shown up but G, BG series were not found much after analyzing overall women's pants suit color characteristics shown in $2004{\sim}2006$ Paris, London, New York and Milan collection. Second, the color analysis about 3years of $2004{\sim}2006$ tells that achromatic colors have been most widely used in every year. In terms of color hue, PB, YR, Y series were appeared most popular and G, BG classes weren't appeared frequently. In addition, once looking at yearly color tone distribution trend, like overall color tone distribution result, Bk, w, dkg, g, p were highly used as sequential and b, v, dp, sf, ItGy series show low distribution level. And such a distribution level of low and high in frequency has been showed continuously as a similar style. Accordingly, through the study, as a tool to express masculinity in women's suit, achromatic colors like black and white series and PB, YR, Y series color were investigated as most popular uses. And as color tones, Bk, w, dkg, g, p were used frequently.

• 한국멀티미디어학회논문지
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• 제14권12호
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• pp.1544-1548
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• 2011

A process of choosing a subset of original features, so called feature selection, is considered as a crucial preprocessing step to image processing applications. There are already large pools of techniques developed for machine learning and data mining fields. In this paper, basically two methods, non-feature selection and feature selection, are investigated to compare their predictive effectiveness of classification. Color co-occurrence feature is used for defining image features. Standard Sequential Forward Selection algorithm are used for feature selection to identify relevant features and redundancy among relevant features. Four color spaces, RGB, YCbCr, HSV, and Gaussian space are considered for computing color co-occurrence features. Gray-level image feature is also considered for the performance comparison reasons. The experimental results are presented.

• 한국세라믹학회지
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• 제23권2호
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• pp.50-54
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• 1986

Effects of additionof $NH_4Cl$, NaBr and LiF on the formation of Zircon and the synthesis of CdS-Se red stain were investigated by means of XRD, DTA and the color standard and color nomenclature. The red stain of CdS-Se system shows a little difference dependent on firing temperature on firing conditon. Consequently it forms a good soid-solution with red color under the ratio of CdS and Se 3.5 -4.1 at 58$0^{\circ}C$. But it changes to dark red as increasing Se. LiF is the most effective in mineralizer to preparae zircon with the equilbrant molar $SiO_2$ and ZrO Zircon makes a good preparation in 0.33 mole LiF from 90$0^{\circ}C$.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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• pp.1577-1582
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• 2006

Tandem OLED structures formed by connecting two or more low-voltage electroluminescent units (stacks) are effective for achieving high efficiency at low current density as well as long operational lifetime. We have fabricated white emitting tandem structures with two or three low-voltage white-emitting stacks using transparent organic "PN"-type connectors. Three- stack white tandem structures with efficiency greater than 24 cd/A at D65 and operational stability of about 110,000 h. (extrapolated) at $1000\;cd/m^2$ have been demonstrated. With a stacked structure, the power consumption for displays using an RGBW format can be reduced by 25% compared to previously described formulations. We have also fabricated advanced white tandem structures where the color gamut (NTSC x,y ratio) has been improved to greater than 70% using standard color filters. The white OLEDs can also be used to increase the colorrendering index CRI (>80%), an important consideration for solid-state lighting.

• Asian-Australasian Journal of Animal Sciences
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• 제14권2호
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• pp.263-267
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• 2001

Beef samples of loin eye area from New Zealand, USA and three quality grades of Hanwoo were analyzed using near infrared spectrophotometer with reference values from laboratory optical Chromameter to determine effective spectrum range and mathematical treatment for determination of color values. $R^2s$ of prediction models were not improved much by calibrating with whole light range (400~2500 nm) compared to using visible range (400~1100 nm). Standard errors of calibration and prediction were influenced by possible bias due to sampling non-homogeneous sample sources. However, partial differentiation in the first order was more stable against sampling biases than second derivatives of the spectra. Lightness value was little different among the five sample sources of beef. Beef samples from USA were brighter and more reddish than beefs of Hanwoo or from New Zealand (p<0.05). Yellowness of USA beef was the highest followed by beef from New Zealand, which was also higher than Hanwoo beefs of three quality grades (p<0.05).