• 한국인쇄학회지
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• 제30권3호
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• pp.1-11
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• 2012

According as the latest printing technology is converted from analogue to digital, life cycle of a printing technology is shortened and the existent printing companies were faced always in a new technology. Specially, way of foreign countries export opened because globalization of printing market is accelerated. But, printing buyers of advanced nation require standard printing process control. fect at product process step. Emphasized in IPA technical conference for past several years tendency about graphic art color proofing and technical analysis and comparison going through Color Proofing RoundUP. These researchers have developed a color management technology. A specially developed printing technology and reference characterization data brought certain high quality elevation in a graphic art proofing technology. When excessive GCR method application supervise printing, width of color conversion necks by requiring a lot of color conversions than proofing. But, these point is lacking relatively than a lot of effects that GCR gives. Therefore, correct interests of GCR algorithm and verification step to forecast beforehand result about actuality application are positively necessary. Therefore, this research forced into input file which is applied with different levels from input to print for printing optimization that consider standard printing with eco-friendly by method to solve these problem. And experimented using manuscript who GCR level is applied as is different in each field, and analyzed the result. Also, it is verification method by step to last printing from input file that solve been the various quality who generate in actuality field through these analysis result. ICC color management confirmed printing optimization process applying GCR algorithm improved to base.

• 컴퓨터교육학회논문지
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• 제7권5호
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• pp.111-120
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• 2004

영상의 칼라, 텍스쳐, 오브젝트의 형체 등과 같은 하위 수준의 특징을 표현할 수 있는 기술자를 MPEG-7 표준에서 규정하고 있다. 하지만, 각각의 기술자를 따로 분석함으로써는 성능 향상에 불충분한 점이 있었다. 본 논문에서는 칼라 기술자와 텍스쳐 기술자를 결합하여 영상검색의 성능을 향상시키는 방법을 제안한다. MPEG-7 표준에서 정의한 $l_{1}$-norm방법보다, 본 논문에서는 칼라 히스토그램의 경우 코사인 근사도 계수를, 에지 히스토그램의 경우 유클리디언 디스턴스를 적용 실험하여 진일보한 결과를 도출할 수 있었다.

• The Journal of Advanced Prosthodontics
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• 제8권6호
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• pp.423-432
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• 2016

PURPOSE. The aim of this work is to evaluate different types of materials used for making implant abutments, by means of an in vitro study and a review of the literature, in order to identify the indications for a better choice of an implant-supported restoration in the anterior section. MATERIALS AND METHODS. 5 implant abutments were tested in a random order in the superior anterior maxilla of pig gingiva (n = 8): titanium dioxide (Nobel Biocare); zirconium dioxide, Standard BO shade (Nobel Biocare, Kloten, Switzerland); zirconium dioxide, Light BI shade (Nobel Biocare); zirconium dioxide, Intense A 3.5 shade (Nobel Biocare); and aluminium oxide. Each abutment was tested for 2 mm and 3 mm thickness. To determine color variation, VITA Easyshade Advance spectrophotometer (Vita Zahnfabrik, Bad Sackingen, Germany) was used. RESULTS. Results showed that the color variation induced by the abutment would be affected by the abutment material and gingival thickness, when the gingival thickness is 2 mm. All materials except zirconium dioxide (Standard shade) caused a visible change of color. Then, as the thickness of the gingiva increased to 3 mm, the color variation was attenuated in a significant manner and became invisible for all types of abutments, except those made of aluminium oxide. CONCLUSION. Zirconium dioxide is the material causing the lowest color variation at 2 mm and at 3 mm, whereas aluminium oxide causes the highest color variation no matter the thickness.

• 한국통신학회논문지
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• 제34권11C호
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• pp.1040-1048
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• 2009

본 논문에서는 인물 영상에 대한 새로운 자동 톤 균형 알고리즘을 제안하였다. 일반적인 백색 균형 (White balance) 알고리즘은 무채색 영역 또는 물리적 반사율을 알고 있는 피사체에 대해 RGB 출력 신호의 비율이 동일하도록 보정하는 방법을 사용한다. 본 논문에서는 사진 속 얼굴색을 기준 조명하에서의 피부색 좌표와 일치 되도록 RGB의 채널 이득을 조절한다. 실험을 위해 카메라 이미지 센서의 전달 특성을 분석하고 기준 조명하에서의 평균 얼굴 색도를 측정하여 카메라 출력 RGB을 계산한다. 마지막으로 임의의 조명하에서 촬영된 인물 영상에 대해 얼굴 부분의 RGB 출력 비율이 기준 얼굴색에 대한 비율이 되도록 R 채널과 B 채널의 이득을 조정하여 색도 보정을 했다. 입력 삼자극치 XYZ는 카메라 전달 행렬에 의해 카레라 출력 RGB로부터 계산된다. 그리고 입력 삼자극치 XYZ는 sRGB 전달 행렬을 이용하여 기준 컬러 공간(sRGB)으로 변환된다. RGB 데이터는 감마 보정 후 디스플레이를 위해 8 bit 데이터로 인코딩되어진다. 알고리즘은 맥베스 컬러 차트 (Macbeth color chart)의 light skin color인 평균 얼굴색과 실제로 측정된 다양한 얼굴색의 평균색에 적용되어졌다.

• 펄프종이기술
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• 제45권5호
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• pp.1-13
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• 2013

This study found fit optimum C, M, Y, K solid density and $CIEL^*a^*b^*$ value to paper & ink as well as check about printing machine state for color management in H-UV waterless off-set printing first. These values applied to GRACoL G7 calibration method. This method is one of color standard management method of printing. GRACoL G7 calibration method is possible stable tone reappearance by controlling gray balance by NPDC(Natural Printing Density Curve). Also, this study used values to make device profile as result that is gotten by application of GRACoL G7 calibration method. This profile was applied to CMS(Color Management System) of H-UV waterless off-set printing, and the result was possible by color management that correspond in printing quality standard of ISO 12647-2 and GRACol 2006 specifications.

• 복식문화연구
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• 제11권6호
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• pp.967-971
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• 2003

As the concerns over health increased in 1990's, research and development on the health material were also activated. The development of UV-cut textile became the hot issue, because the damage of W irradiation due to ozone depletion has become widely known. UV-cut effect is determined by the material, the color, the organization and the density of UV-cut fibers. UV-cut effect is very different according to the fibers. Polyester is known to have a better effect. Even in the same textile material, staple fiber has more effect than filament fiber. Different colors have different offsets. Although textiles have the same color, the effects can be different according to the depth of color. PET, PET/cotton blend, nylon and cotton fabrics were ultraviolet cutting finished with padding method using several absorbers. These UV-cut effect can be improved through the processing. Safety of UV-cut textile for the body must be considered future, Until now the figure of the UV-cut effects has been emphasized. There has been no experiment on the human body, although the textiles are directly on the human body. Futhermore there os no safety standard of UV-cut textiles. Therefore every effort will be made to set the standard UV-cut processing is established. The need of UV-cut products will be known to the consumers.

• Nuclear Engineering and Technology
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• 제50권3호
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• pp.519-525
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• 2018

Obtaining knowledge of the absorbed dose up-taken by a certain material when it is exposed to a specific ionizing radiation field is a very important task. Even though there are a plenitude of methods for determining the absorbed dose, each one has its own strong points and also drawbacks. In this article, an innovative idea for the development of a new gamma-ray dosimetry system is proposed. The method described in this article is based on optical colorimetry techniques. A color standard is fixed to the back of a BK-7 glass plate and then placed in a point in space where the absorbed dose needs to be determined. Gamma-ray-induced defects (color centers) in the glass plate start occurring, leading to a degree of saturation of the standard color, which is proportional, on a certain interval, to the absorbed dose. After the exposure, a high-quality digital image of the sample is taken, which is then processed (MATLAB), and its equivalent $I_{RGB}$ intensity value is determined. After a prior corroboration between various well-known absorbed dose values and their corresponding $I_{RGB}$ values, a calibration function is obtained. By using this calibration function, an "unknown" up-taken dose value can be determined.

• 천문학회지
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• 제29권spc1호
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• pp.75-76
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• 1996

We have started multi-color imaging program of nearby galaxies since last year and present preliminary result here. We selected 12 nearby galaxies classfied from E to Sab type and observed in BVRIJHK' bands. Photomtric parameters such as isophotal diameter, axial ratio, isophotal magnitude were measured and observed colors were compared with theoritical model. We find a standard evolution model agrees well with observed results.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2006년도 하계종합학술대회
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• pp.727-728
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• 2006

In this paper, we analyzed the color restoration method to be used in the Multi-Scale Retinex and proposed new color restoration method. and, we compared the result of the algorithm to be proposed with conventional algorithm through the experiment.

• 한국도서관정보학회지
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• 제38권1호
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• pp.89-106
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• 2007

이미 운용되고 있는 우리나라 국립대학 도서관 웹 페이지의 색채이미지를 분석하여, 웹 페이지를 디자인하는데 있어서 배색이미지와 형용사이미지에 관한 정보와 방향을 제시하기 위한 것이다. 분석방법은 색채감성척도를 사용하여 분석대상 사이트에 대한 RGB값을 찾아내어 Color Chip을 추출하였으며, 배색이미지와 형용사이미지로 구분하였다. 연구의 범위는 우리나라 국립대학도서관협의회에 가입되어 있는 41개 국립대학 도서관을 대상으로 하였으며, 그 결과 많은 대학이 흰색이나 회색의 배색 바탕에다, 연한 청색계열의 색조와 녹색계열의 배색이 주를 이루었고, 형용사 이미지는 경쾌한 이미지와 밝은 이미지가 많았으며, 다음으로는 은은한 이미지, 우아한 이미지 순으로 나타났다.