• 대한전자공학회논문지SP
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• 제46권3호
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• pp.112-118
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• 2009

피부색 검출 기법은 안면 정보를 이용한 체질 진단 및 건강 진단, 인간과 로봇과의 상호작용, 영상 검색 시스템 등 다양한 응용분야에서 사람의 얼굴과 손의 검출을 위해 많이 사용되어 왔다. 비디오 영상의 경우 조명이나 환경 변화에 강인한 피부색 영역의 추적을 위해 매 프레임마다 대상 영역의 피부색 모델을 업데이트 하는 것이 일반적이나, 단일 영상에서 피부색 영역을 검출하거나 비디오 영상의 첫 프레임에서 피부색 영역을 검출할 때에는, 많은 연구들이 하나의 고정된 피부색 모델을 이용하기 때문에 입력 영상의 특징에 따라 낮은 검출율이나 높은 긍정 오류율이 발생하는 경우가 많다. 이러한 문제점을 해결하기 위해 본 논문에서는 피부색 검출 결과를 피드백 받아 피드백 받은 정보를 바탕으로 피부색 검출 조건을 수정하는 과정을 반복함으로써 다양한 환경 조건들을 가지는 단일 영상에 대해 효과적으로 피부색을 검출할 수 있는 방법을 제안한다.

• 복식문화연구
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• 제7권5호
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• pp.80-92
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• 1999

The objectives of this study were to investigate the relation between personality(activity, emotional stability, and dominance) and clothing design preferences, and to examine the differences of clothing design preferences according to demographic variables of men. Subjects for the study were 255 male white-collar workers ranging in ages from twenties to fifties, in Seoul and Kwangju City, Korea. The men with higher activity of personality preferred the double jacket with 4 buttons, the combination of light color jacket and dark trousers, glen check pattern jacket, herringbone pattern jacket, light beige color dress shirts. The higher the emotional stability, the higher the preferences on diverse patterns such as fine stripe, plaid, hound\`s-tooth check, and small check pattern. The men with higher dominance preferred dark blue color suit, glen check pattern suit, and necktie of red circle, and disliked the necktie of gray circle. The men in their 20\`s and 30\`s liked the single jacket with 3 buttons, the suit of fine stripe and the necktie of gray circle more among three income groups. The higher the men\`s age and income were, the more they liked the conservative style such as a single jacket with 2 buttons. The men who reside in Seoul liked the suit of gray circle, the jacket and trousers of same color, the patternless jacket, and the patternless suit more than the men in Kwangju. Therefore, the men in methropolitan area preferred conservative clothing image. Fine stripe pattern and patternless materials were preferred when men wore jacket and trousers of same color, while glen check pattern was preferred as the pattern of jacket when jacket and trousers of different color. Male white-collar worker liked single jacket more than double jacket, and preferred the dark blue color suit and necktie, patternless suit, fine stripe suit, and the pale blue dress shirts generally. The present findings provide that the personality of male has influence on the clothing design preferences, and it is possible to infer men\`s personality by their attire.

• 한국전기전자재료학회논문지
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• 제29권4호
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• pp.231-236
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• 2016

A three-electrode type reflective display (electronic paper) is designed to apply an independent electric field to each three electrodes of the cell including two electric-type of particles and electrically neutral color fluid, so single color realization is possible. In particular, the movement of particles and optical properties are decided by the electric field between two electrodes on the lower substrate. So, the effect of electric field by the distance between two electrodes on the lower substrate is studied with electrode spacing with $10{\mu}m$, $15{\mu}m$, $20{\mu}m$, and $25{\mu}m$. By our experimentation, the driving voltage induces more reliable movement of charged particles and the optical properties as compared with the threshold voltage. We ascertain the single color realization and non-inverted particle separation is possible. So the more desirable optical properties are observed in case of the short electrode like $10{\mu}m$.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2000년도 ITC-CSCC -1
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• pp.58-61
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• 2000

In this paper, we describe an effective method to enhance the color night images with spatio-temporal multi-scale retinex focused to the Intelligent Transportation System (ITS) applications such as in the single CCD based Electronic Toll Collection System (ETCS). The basic spatial retinex is known to provide color constancy while effectively removing local shades. However, it is relatively ineffective in night vision enhancement. Our proposed method, STMSR, exploits the iterative time averaging of image sequences to suppress the noise in consideration of the moving vehicles in image frame. In the STMSR method, the spatial term makes the dark images distinguishable and preserves the color information day and night while the temporal term reduces the noise effect for sharper and clearer reconstruction of the contents in each image frame. We show through representative simulations that incorporating both terms in the modeling produces the output sequential images visually more pleasing than the original dim images.

• Restorative Dentistry and Endodontics
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• 제36권2호
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• pp.108-113
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• 2011

연구목적: 여러 광개시제 시스템에 의해 활성화되는 복합 레진을 기존의 single-peak LED와 최신의 dual-peak LED로 광중합하였을 때의 누프 미세 경도와 수중 보관 후의 색 안정성 차이를 알아보기 위한 것이다. 연구 재료 및 방법: Camphorquinone이 광개시제로 포함되어 있는 Z100과 다른 광개시제가 포함되어 있는 것으로 알려진 Tetric Ceram과 Aelite LS Posterior를 유리판 위에서 테플론 주형(직경 8 mm, 두께 2 mm) 내로 충전하고, single-peak LED와 dual-peak LED로 광중합하였다. 중합 후 누프 미세 경도를 측정하였고 한 달 후 색 변화를 측정하였다. 광중합기간의 미세 경도와 색 변화 차이를 student t-test로 분석하였다. 결과: 모든 레진에서 dual-peak LED로 광중합하였을 때 미세 경도가 높게 나타났다. 색 안정성 역시 dual-peak LED로 광중합하였을 때 높게 나타났으나 Aelite LS Posterior에서만 통계학적으로 유의한 차이가 있었다. 결론: 다른 광개시제가 포함되어 있는 복합 레진을 dual-peak LED로 광중합한 경우 미세 경도와 색 안정성에 있어서 더 좋은 결과를 얻을 수 있었다.

• 한국통신학회논문지
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• 제35권12C호
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• pp.1004-1009
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• 2010

대부분의 디지털 카메라에선 크기와 가격을 줄이기 위해 컬러 필터 어레이를 포함한 단일 이미지 센서를 사용하고 있다. 이렇게 얻어진 이미지들은 각 픽셀 당 하나의 색상 정보만을 가지고 있기 때문에 사람이 볼 수 있는 이미지로 만들기 위해서는 나머지 두 개의 손실된 색상 정보를 복원해야 하며, 이 과정을 디모자이킹(Demosaicing) 혹은 컬러 필터 보간법(Color Filter Interpolation)이라 부른다. 본 논문에서는 방향성을 고려한 새로운 디모자이킹 알고리듬을 제안하고 있으며, 이 알고리듬에서는 개선된 가중치 함수를 통해 화질을 개선하고 있다. 보간 성능이 개선되었음을 보여주기 위해 기존의 방법들과 비교를 했으며, PSNR과 주관적인 화질 비교를 통해 더 나은 성능을 보여주는 것을 입증하였다.

• 한국염색가공학회지
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• 제29권2호
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• pp.62-68
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• 2017

Coffee sludge and onion shells are known typically as waste resources as well as simultaneously being the raw material for dye having a golden brown color. This research studies the dyeability, functionality, and colors of woolen fabric after being dyed by different dyeing method using coffee sludge and onion shells extract. The woolen fabric was refined and pre-mordanted with tannin. The dyeing process conducted was single-dye, using coffee sludge and onion shells extract, sequential multi-dye, consecutively dyeing with coffee sludge and onion shells, and mixed-dye, blending coffee sludge extract and onion shells extract to dye. The dyeing was measured on the surface color, color fastness, and UV-protection ability. As a result, the expression of various hues of tan using coffee sludge and onion shells extract were shown to be possible. Additionally, single-dye, sequential multi-dye, mixed-dye had generally superiority in color fastness to light, all rating 3 and color fastness to washing, rating 3 or 4, showing relatively stable color fastness to washing. The UV protection ability was shown to be better, especially appearing satisfactory in the UV-B protection, all measured to be over 90%.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2009년도 추계학술대회
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• pp.215-218
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• 2009

본 논문에서는 단일 센서 디지털 카메라를 위한 디모자이킹 기술에서의 보간법 성능을 분석하고자 한다. 디모자이킹 기술에 사용되는 보간법들 중에서 상대적으로 복잡도가 낮고 영상 화질이 우수한 방법들인 BI(bilinear interpolation), ACPI(adaptive color plane interpolation), ECI(effective color interpolation), Ideal ACPI, EECI(Enhanced effective color interpolation)를 선택하여 분석한다. 각 방법들의 알고리즘을 소개하고 각 알고리즘에 대한 실험을 수행한다. 이 실험은 24개의 코닥 이미지를 이용하여 객관적인 영상 화질과 수행속도를 비교 평가한다. 실험 결과로 ECI가 복잡도 대비 영상 화질이 우수하다는 것을 보여준다.

• Journal of information and communication convergence engineering
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• 제1권3호
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• pp.123-128
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• 2003

This paper has addressed the implementation of the single rate Rate Adaptive Shaper(srRAS) described in RFC2963. This shaper has been proposed to use at the ingress of differentiated services networks providing Assured Forwarding Per Hop Behavior (AFPHB). srRAS is typically used in conjunction with single rate Three Color Marker(srTCM) described in RFC2697. srRAS itself is the tail-drop FIFO that is drained at a variable rate, and srTCM is the marker with metering function. G-srRAS is the same as srRAS except that RAS receives the green token state information from the downstream srTCM to avoid delaying a packet in RAS although there are sufficient tokens available to color the packet green. In this paper, we have addressed the algorithm and the architecture of srRAS, and the scheme to implement srRAS using VHDL(Very high-speed integrated circuit Hardware Description Language) and its related tools.

• 한국의류학회지
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• 제33권5호
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• pp.804-816
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• 2009

This study was aimed to analyze color characteristics of silk fabrics dyed with a variety of commercial natural dyes focusing on hue/tone system. Using eleven different natural dyes, single and sequential dyeing were performed under a variety of conditions of dye bath concentration, mordanting, and dyeing sequences. Color characteristics of dyed silk fabrics were investigated by Munsell's color notation of H V/C and PCCS (Practical Color Coordination System) tones. As results, most of yellowish natural dyes as principal shades in natural dyeing showed Y or YR for hue families while d, ltg, and g for tone, which agrees with colors frequently used in comtemporary apparel industries. As for single dyeing, some hues like R, RP, G, GY, and BG were found to have their own tones owing to the used natural dyes. For varying hues in natural dyeing, sequential dyeing is useful in that GY, G, and BG rarely appeared in single dyeing were frequently shown in sequential dyeing by combination of some dyes. In the other hands, mordanting may be employed for tone variation in that aluminum seemed to contribute to light and dull tones, copper to dull, and ferrum to garyish and dark ones. These results can be helpful to design colors for fashion fields by natural dyeing.