• Title/Summary/Keyword: Dark Area

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Occurrence of Strawberry Scab Caused by Cladosporium herbarum in Korea

  • Kwon, Jin-Hyeuk;Kang, Soo-Woong;Kim, Jeong-Soo;Park, Chang-Seuk
    • Mycobiology
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    • v.29 no.2
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    • pp.110-112
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    • 2001
  • A black scab was observed on strawberry(Fragaria ananassa) in plastic film houses around Jinju area during the winter of 2000. The disease started from leaves then moved to calyx and runner. At the beginning, the infected area started with small dark brown spots then gradually expanded. The pathogenic fungus was purely isolated from the diseased leaves, calyx and runner. The fungus was inoculated to test Koch's postulates and proved to be the causal agent of the disease. The isolated fungus grew readily on potato dextrose agar, forming dark green to dark gray colonies. The optimum temperature for mycelial growth was about $25^{\circ}C$. The diameter of growing hyphae was $3.8{\sim}5.6{\mu}m$. Conidia were ellipsoidal, ovoid or subspherical, mostly one-celled but occasionally septate. The size of conidia were $4.1{\sim}11.7{\times}3.8{\sim}5.3$ 1-cell, $9.3{\sim}18.8{\times}4.0{\sim}7.4{\mu}m$ 2-cell and formed in long branched chains on the erected conidiophores which were dark brown and variable in length between $28.8{\sim}236.2{\times}3.0{\sim}6.2{\mu}m$ in size. The fungus was identified as Cladosporium herbarum on the basis of its morphological characteristics. The black scab disease of strawberry caused by C. herbarum has not been reported in Korea previously.

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Survey research on effect of Chinensis galla, Lithospermi radix, Salviae miltiorrhizae radix - containing cosmetics for improving dark circles (오배자.자초.단삼 함유 화장품의 다크써클 개선 효능에 관한 설문조사)

  • Kim, Kyung-Jun
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.23 no.3
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    • pp.165-171
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    • 2010
  • Objective : This clinical research was conducted to test patients with dark circles by external application with Chinensis galla, Lithospermi radix and Salviae miltiorrhizae radix in cosmetics. Methods : We gave prototype cosmetics to 27 patients who volunteered for this clinical research in Kyungwon university from October 14th, 2009 to November 11th. Left inferior palpebra area of patients was treated with Chinensis galla, Lithospermi radix and Salviae miltiorrhizae radix in cosmetics(Experimental group) and right inferior palpebra area of patients was treated with placebo(Control group) for 4weeks. We observed change of darkness of inferior palpebra and subjective satisfaction. Also taking digital image and color meter were used to evaluate the effects of Chinensis galla, Lithospermi radix and Salviae miltiorrhizae radix in cosmetics. Results : Overall evaluation was slightly positive. It is more effective on Right inferior palpebra than on Left inferior palpebra to improve darkness of inferior palpabra in this clinical research. Conclusion : We can guess that cosmetics with Chinensis galla, Lithospermi radix and Salviae miltiorrhizae radix has some therapeutical effects in reducing the symptoms of dark circles.

K-Retinex algorithm for fast backlight compensation (역광 사진의 빠른 보정을 위한 K-Retinex 알고리즘)

  • Kang, Bong-Hyup;Ko, Han-Seok
    • Proceedings of the IEEK Conference
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    • 2006.06a
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    • pp.309-310
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    • 2006
  • This paper presents an enhanced algorithm for compensating the visual quality in backlight image. Current cameras do not represent all details of scene into human's eye. Saturation and underexposure are common problems in backlight image. Retinex algorithm, derived from Land's theory on human visual perception is known to be effective in enhancing the contrast. However, its weaknesses are long processing time and low contrast of bright area in backlight scene because of compensating the details of dark area. In this paper, K-Retinex algorithm is proposed to reduce the processing time and enhance the contrast in both dark and bright area. To show the superiority of proposed algorithm, we compare the processing time and local variance of each area above.

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A LabVIEW-based Video Dehazing using Dark Channel Prior (Dark Channel Prior을 이용한 LabVIEW 기반의 동영상 안개제거)

  • Roh, Chang Su;Kim, Yeon Gyo;Chong, Ui Pil
    • Journal of Korea Multimedia Society
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    • v.20 no.2
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    • pp.101-107
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    • 2017
  • LabVIEW coding for video dehazing was developed. The dark channel prior proposed by K. He was applied to remove fog based on a single image, and K. B. Gibson's median dark channel prior was applied, and implemented in LabVIEW. In other words, we improved the image processing speed by converting the existing fog removal algorithm, dark channel prior, to the LabVIEW system. As a result, we have developed a real-time fog removal system that can be commercialized. Although the existing algorithm has been utilized, since the performance has been verified real - time, it will be highly applicable in academic and industrial fields. In addition, fog removal is performed not only in the entire image but also in the selected area of the partial region. As an application example, we have developed a system that acquires clear video from the long distance by connecting a laptop equipped with LabVIEW SW that was developed in this paper to a 100~300 times zoom telescope.

The Comparative Study of the Harmony of Coloration according to Transformation of Color Area-Ratio in Traditional Korean Dress of Korean and American Students - On the similarity and contrast coloration - (치마$\cdot$저고리의 색상 면적비 변화에 따른 한$\cdot$미 여대생의 조화감 비교 연구 - 유사배색과 대비배색을 중심으로 -)

  • Kang Kyung-Ja;Moon Ju-young;Lim Ji-Young
    • Journal of the Korea Fashion and Costume Design Association
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    • v.7 no.3
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    • pp.17-26
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    • 2005
  • In this research, in order to find out the effect of the area ratio in the harmonic sense assessment of the coloration of Korean clothes, the coloration of a Korean jacket and a skirt was compounded with a similar coloration and a contrast coloration. The respondents were asked to evaluate 16 stimuli of the traditional Korean skirt and jacket with the coloration of the Korean jacket/ skirt, the skirt/ Korean jacket was separately compounded to be 4 tones such as vivid, light, dull, dark. The subjects were 44 female undergraduate students. The results of each can be summerized as follows. As to similar coloration, the korean yellow jacket and red skirt, Korean students feel vivid and dull tone was harmonious, and American students feel vivid, light, and dark tone were harmonious coloration. In inversed case, red korean jacket and yellow skirt, both countries' students recognized that the vivid tone was harmonious. Korean students gave higher points to korean traditional dress in similar coloration such as yellow korean jacket which was small area and red skirt which was large area coloration than inversed color area ratio which red korean jacket and yellow skirt. As to contrast coloration, the korean green jacket and red skirt, Korean students feel vivid tone was harmonious, and American students feel vivid, dark tone were harmonious coloration. In inversed case, red korean jacket and green skirt were recognized that any tone was not harmonious for both countries' students. Both countries of student showed the culture gap. Compared with American students, Korean students were familiar with korean dress's traditional coloration, as a result familiar coloration was recognized harmonious coloration.

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e-Science Paradigm for Astroparticle Physics at KISTI

  • Cho, Kihyeon
    • Journal of Astronomy and Space Sciences
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    • v.33 no.1
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    • pp.63-67
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    • 2016
  • The Korea Institute of Science and Technology Information (KISTI) has been studying the e-Science paradigm. With its successful application to particle physics, we consider the application of the paradigm to astroparticle physics. The Standard Model of particle physics is still not considered perfect even though the Higgs boson has recently been discovered. Astrophysical evidence shows that dark matter exists in the universe, hinting at new physics beyond the Standard Model. Therefore, there are efforts to search for dark matter candidates using direct detection, indirect detection, and collider detection. There are also efforts to build theoretical models for dark matter. Current astroparticle physics involves big investments in theories and computing along with experiments. The complexity of such an area of research is explained within the framework of the e-Science paradigm. The idea of the e-Science paradigm is to unify experiment, theory, and computing. The purpose is to study astroparticle physics anytime and anywhere. In this paper, an example of the application of the paradigm to astrophysics is presented.

Improved Dark Channel Prior Dehazing Algorithm by using Compensation of Haze Rate Miscalculated Area (안개량 오추정 영역 보정을 이용한 개선된 Dark Channel Prior 안개 제거 알고리즘)

  • Kim, Jong-Hyun;Cha, Hyung-Tai
    • Journal of Broadcast Engineering
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    • v.21 no.5
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    • pp.770-781
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    • 2016
  • As a result of reducing color information and edge information, object distinction in haze image occurs with difficulty. One of the famous defogging algorithm is haze removal by using 'Dark Channel Prior(DCP)', which is used to predict for transmission rate using color information of an image and eliminates haze from the image. But, In case that haze rate is estimated under color information, there is a miscalculated issue which is posed by haze rate and transmission in area with high brightness such as a white object or a light source. In this paper, We deal with a miscalculated issue by correcting from around haze rate, after application of color normalization used by main white part of image haze. Moreover, We calculation improved transmission based on the result of improved haze rate estimation. And then haze image quality is developed through refining transmission.

The Paleoenvironment of the Northern Part of the Nagdong River Delta (낙동강 삼각주 북부의 고환경)

  • 오건환
    • The Korean Journal of Quaternary Research
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    • v.8 no.1
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    • pp.33-42
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    • 1994
  • The study area is filled up by alluvium which can be classified into lower and upper beds by the facies of deposits and their degree of weathering. The lower bed is not of marine but of fluvial. The upper bed is mainly composed of clay and silt or fine sand beds col-ored dark or dark gray which are of neritic or brackish yielding mollusca fossils. The oyster(Crassostrea ariakensis) obstained from the depth of 3m below the present sea level in the upper bed was dated at 4,100 110Y.B.P. and the veneridae(Meretrix lamarck) 1m height above the present delta plain in the old sand bar was dated at 1,700 85Y,B,P. It is therfore concluded that the study area a small kern col of terrestri-al basin prior to postglacial age had experienced the Holocene transgression. Consequently the study area is considered to have been progressively formed under neritic or brackish circumstance before 1,700Y.B.P.

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Shape-Resolving Local Thresholding for Vehicle Detection (교통 영상에서의 차량 검지를 위한 형상분해 국부영역 임계기법)

  • 최호진;박영태
    • Proceedings of the IEEK Conference
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    • 2000.06d
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    • pp.159-162
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    • 2000
  • Selecting locally optimum thresholds, based on optimizing a criterion composed of the area variation rate and the compactness of the segmented shape, is presented. The method is shown to have the shape-resolving property in the subtraction image, so that overlapped objects may be resolved into bright and dark evidences characterizing each object. As an application a vehicle detection algorithm robust to the operating conditions could be realized by applying simple merging rules to the geometrically correlated bright and dark evidences obtained by this local thresholding.

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Modern Application of Design Elements on Ceremonial Costume of Korean Folk Belief (한국 민간신앙 의례복에 나타난 디자인 요소의 현대적 활용 - 배색을 중심으로 -)

  • Kim, Ji-Young
    • Journal of the Korean Society of Costume
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    • v.57 no.9
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    • pp.88-96
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    • 2007
  • The purpose of this study is to present examples for modern application with traditional color on ceremonial costume of Korean folk belief which is regarded as representative research material standing for Korean cultural archetype. The arrangements of color on the ceremonial costume of Korean folk belief were selected from 11 items specified as an import intangible cultural asset. These color arrangements were composed of fundamental colors from the viewpoint of modern color sensation, but had a excellent harmony in Hue. Therefore, not shifting Hue of color arrangement on ceremonial costume, traditional color arrangement was apply to contemporary it by shifting tone. Brilliant and deep chromatic tone that belong to 3, 4 area was converted into toned light grey, light clear, dark deep, toned dark grey, and greyish chromatic tone that belong to 1, 2 area or 5, 6, 0 area or 2, 7, 9 area. The plan that applies arrangement color with brightness contrast of traditional fundamental colors on a modern color harmony was presented from that. Like this, we can combine traditional color into modern color sensation, stylize and apply it on a production of character, logogram design, fashion design for characters in animation or game. From this, we'll be able to be close to the color arrangement sensation including our racial emotion in the everyday life.