• Journal of Korea Multimedia Society
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• v.13 no.4
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• pp.535-546
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• 2010

Digital images have undesired color casts due to various illumination conditions and intrinsic characteristics of cameras. Since the color casts in the images deteriorate performance of color representations, color correction is required for further analysis of images. In this paper, an algorithm for detection and removal of color casts is presented. The proposed algorithm consists of four steps: retrieving similar image using color by correlation, extraction of near neutral color regions, kernel density estimation, and removal of color casts. Ambiguities in near neutral color regions are excluded based on kernel density estimation by the color by correlation algorithm. The method determines whether there are color casts by chromaticity distributions in near neutral color regions, and removes color casts for color constancy. Experimental results suggest that the proposed method outperforms the gray world algorithm and the color by correlation algorithm.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.7 no.1
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• pp.164-169
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• 2003

In this paper, we investigate recognition of human faces in a meeting room. The major challenges of identifying human faces in this environment include low quality of input images, poor illumination, unrestricted head poses and continuously changing facial expressions and occlusion. In order to address these problems we propose a novel algorithm, Dynamic Space Warping (DSW). The basic idea of the algorithm is to combine local features under certain spatial constraints. We compare DSW with the eigenface approach on data collected from various meetings. We have tested both front and profile face images and images with two stages of occlusion. As a result from the experiment, we obtained 82.7% for PCA algotithm, and 89.4% for DSW. We get to obtain 6.9% better result from conductive DSW approach rather than PCA. It turned out to be that it shows more original and unique facial image.

• Archives of design research
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• no.16
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• pp.77-86
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• 1996

fhe purpose of lhlS study was to inves,igate ,he color preference of pees among Korean and Japanese Lnrversity students groups. Looking at a color chart contammg (is colored chips arranged sequentlally by hue and tone. the subjects from two countries were asked to choose their five most hlghly preferred colors and five least preferred colors. The data was classifed by hues and tones and then both sexes. The results were analyzed by comparison of the general orders of preference, and comparison of the selected colors by hues and tones and both sexes. The correlation of color preference in two countries was also studled uSlng Pearson's product moment correlatlOn cod ficren t. The results of this study were summaried as follows: 1. The most preferred color in two countries was vivid blue, and the least preferred color in two countries was grayish brown. 2. The most prefered hues in each countries were purple blue in Korea and blue in Japan. The least preferred hue in two countries was yellow red. 3. The most preferred tone in two countries was vivid and least preferred tone in two countries was grayish. 4. The correlation of the color preference between two countries was studied usmg Pearson's product moment correlation coefflCient for both hues and tones. I, indicated strong correlation in tones than in hues.

• Journal of the Korean Institute of Telematics and Electronics S
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• v.35S no.6
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• pp.137-146
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• 1998

Recently many devices print electronic images in a variety of ways. The reproduced color, however, is different from the original color because of the difference of hardware characteristics. To maintain device independent color, gamut mapping method is proposed. The proposed color gamut mapping uses nonlinear intensity mapping and clipping for saturation mapping on HSI color space. In the dithering operation, expanded nonlinear ordered dithering and modified error diffusion are proposed. The proposed ordered dithering uses expanded nonlinear quantization which considers overlapping phenomena of neighbored printing dots. In the modified error diffusion, quantization errors to be diffused are adjusted to improve both image blur and color change produced in the error diffusion. So, the printed image is similar to the image of monitor. Our results indicate that proposed algorithm can produce high quality image in the low bit color devices.

• Science of Emotion and Sensibility
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• v.23 no.4
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• pp.73-92
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• 2020

This article addresses the possibility of developing a new art appreciation method using olfaction, which was not previously considered an important sense in expanding the cultural enjoyment of visually impaired people. The human olfactory system is a faculty that is not considered very important in modern society; however, this is due to cultural factors, and from a biological point of view, the human sense of smell has sufficient potential for practical application. In this study, it is assumed that when various types of scent are perceived through this sense of smell, each has its own unconscious relation to color and concept, which researchers have termed "color directivity" and "concept directivity." Through experiments, the researchers found that some specific scents have color directivity and concept directivity, and in using these scents, they succeeded in delivering information about colors used in artworks to the visually impaired. Based on this study, we hope to continue our research on the use of color-concept directional scents that can convey the brightness and saturation of colors and more diverse hues.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2005.06a
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• pp.1446-1449
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• 2005

The purpose of this study is the real-time shape measurement of three-dimensional object by using color coded information. The paper relates to non-contact optical measurements of surface profiles or displacements, because of optical measurement systems are advantageous over using mechanical sensing, their relatively high speed and non-destructive capabilities. Therefore is particularly useful for three dimensional sensing which requires high horizontal and vertical resolution of measurements over a wide range thereof. Each a red, blue, green by using a inherence colors of hue value are good point.

• Korean journal of food and cookery science
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• v.29 no.4
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• pp.353-359
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• 2013

The effect of the addition of dough ripe stage rice (DRSR) and yellow ripe stage rice (YRSR) on the quality characteristics of Backsulgi was investigated. The DRSR and YRSR addition ratio of 30% was selected by preliminary sensory evaluation study for which backsulgi was prepared with DRSR added to full ripe stage rice (FRSR, control) as the weight ratio of 0, 20, 30 and 50%. The pasting properties of 30% added DRSR and YRSR flours, analyzed with rapid viscosity analyzer (RVA), were compared with FRSR flour. The RVA values of holding, breakdown, final viscosities were higher in 30% DRSR and YRSR flours than in control. Backsulgi prepared with 30% DRSR and YRSR showed lower moisture content along with higher greenness and yellowness than control. As a result of analysis with texture analyzer, adhesiveness, springiness, cohesiveness, chewiness and resilience were lower in backsulgis with 30% DRSR and YRSR than in control. In the sensory evaluation, backsulgis with 30% DRSR and YRSR were assessed as having more intensive green color, and more greenish and delicious taste than control. Furthermore, backsulgi with 30% DRSR showed higher score of overall acceptability than 30% YRSR (p<0.05), and not significantly different score with control (p>0.05). Therefore, the addition of 30% DRSR could give favorable color and flavor to backsulgi.

• Journal of the Korean Society for information Management
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• v.36 no.4
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• pp.7-19
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• 2019

The aim of this study is to develop a technique for keyword extraction in Korean-Chinese text in the modern period. We considered a Korean morphological analyzer and a particle in classical Chinese as a possible method for this study. We applied our method to the journal "Sisachongbo," employing proper-noun dictionaries and a list of stop words to extract index terms. The results show that our system achieved better performance than a Chinese morphological analyzer in terms of recall and precision. This study is the first research to develop an automatic indexing system in the traditional Korean-Chinese mixed text.

• Journal of the Mineralogical Society of Korea
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• v.1 no.1
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• pp.20-31
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• 1988

울진 연.아연 광사의 Ca석류석은 결정화학적 성질의 차이에 따라 색, 경도, 비중과 같은 물리적 특성이 달라진다. 가기 다른 색을 보여주는 네가지의 석류석에 대하여 전자현미분석, X-선 회절분석, 뫼스바우어 및 적외선 분광분석등을 실시하여 화학적, 구조적 및 결정화학적 특징을 연구하였으며 광학적 및 물리적 특성도 연구되었다. 화학분석에 의하면 Fe 함량이 0.35에서 1.92%로 증가함에 따라 석류석의 색이 연분홍, 황록색, 적갈색 및 암갈색의 순으로 변한다. 이러한 Al에 대한 Fe의 치환은 단위포의 크기에도 영향을 미쳐 11.91$\AA$에서 12.06$\AA$으로 단위포의 크기가 증가한다. 뫼스바우어 계수에 따르면 Fe치환에 따른 Y-O 거리의 증가로 $\delta$값이 0.372에서 0.389mm/sec로 일정하게 증가한다. 또한 능을 고유하며 이웃하는 X십이면체에 영향을 주어 내부대칭도를 떨어뜨리게 된다. 이러한 현상은 적외선 스펙트럼의 360~300cm-1의 영역에서 그로슐라에는 관찰되지 않는 수개의 흡수선이 안드라다이트에서는 관찰된다. 한편 소량의 Fe2+가 그로슐라에서만 관찰됨을 미루어 석류석의 생성이 용역내으 낮은 산소분압에 영향을 받았을 것으로 추측된다.

• Journal of Sericultural and Entomological Science
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• v.41 no.1
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• pp.20-28
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• 1999

Color qualities investigated on the basis of Munsell code and Korean standard color code for the cocoons from various strain of mulberry silkworm, Bombyx mori. 16 of different color qualities were identified from 21 of original silworm strains, and determinated international name with the revision of Korean color name for cocoon. The various cocoon color confirmed on the sphere from 567 to 593 nm wavelength, 78% of those located at the region about 580 nm (575~584) of sensitive "color difference limen". Y gene engaged broad ranges of wavelength (575~593 nm) in the color expression, by contrast with other genes of Pk (593 nm), F (584~593), Grc and relative G group (567~570 nm), on the transmission of carotenoid or flavonoid color substance. YC gene expression by original silk worm strain was also distinguished by those variation of specific yellow than other colors from Grc, GaGb, Gc, and YPkF. Appearance of chrome yellow cocoon was dominant than other yellow in the cross among vivid yellow group. F1 of pin${\times}$green produced the cocoon of yellow such as "additive mixture" as color light, however, most of the hybrid between yellow cocoon showed the color similar to "subtractive mixture" as a mixture of dyestuff. Hybrid cocoons among yellow or green colors were decreased their hue, value, and chroma, than those of parent. Diallel cross among the strain of various green cocoon suggest the existence of Grc, Ga, Gb, Gc genes. Cream colored cocoon of B. mandarina was differed from other yellow cocoon of Bobyx mori B. mori. Y$^A$ with Ymc showed the similar role of Y with C, therefore, segregated yellow cocoon from the B. mori${\times}$B. mandarina (+$^YC/Y^AYmc$). YC expression of $Y^AY$mc genes might be suppressed by deficiency of outer layer sericin on the middle division of silk giand in the B. mandarina.