• 한국정보디스플레이학회:학술대회논문집
• /
• 한국정보디스플레이학회 2008년도 International Meeting on Information Display
• /
• pp.1652-1655
• /
• 2008

A new high contrast LCD structure for TN mode TFT-LCD, of which the contrast ratio is 1.2 times hi gher than that of the conventional one, has been developed. The contrast ratio of TFT-LCD display can be improved by some modified materials, which like as polarizer, liquid crystal, color filter and light enhancement film. In order to know which condition can get the major contribution for the upgrade of the contrast ratio, we used Taguchi method and analyzed the contribution ratio for each composition and succeed to build up the formula of contrast ratio. From this study, we could achieve the highest CR value as 1200:1 of TN mod e TFT-LCD nowadays.

• 한국전자통신학회논문지
• /
• 제13권3호
• /
• pp.525-532
• /
• 2018

최근 센서 네트워크 기술의 발달과 카메라 기술의 발달로 이 두 기술을 접목한 비주얼 센서 기술을 이용하여 사람이 접근하기 어려운 지역의 환경을 효과적으로 모니터링하고자 하는 수요가 증가하고 있다. 비주얼 센서에서 획득된 영상은 자연 현상을 그대로 반영하기 때문에 날씨나 시간에 따라 영상의 품질이 나빠질 수 있다. 이 논문에서는 비주얼 센서에서 획득되는 영상의 특성을 이용하여 영상의 대비를 개선하는 알고리즘을 제안한다. 제안하는 방법에서는 먼저 비주얼 센서가 촬영하는 대상에 대해서 관심 영역을 설정하고 관심 영역의 컬러 값의 변화를 영상의 밝기 값에 따라 분석한다. 그리고 분석한 결과와 동일한 대상의 고대비 영상을 이용하여 저대비 영상의 대비를 개선한다. 실험 결과는 제안하는 방법이 간단하면서도 정확하게 저대비 영상의 컬러 성분들을 복원하여 영상의 대비를 개선하는 것을 보여준다.

• Bulletin of the Korean Chemical Society
• /
• 제26권10호
• /
• pp.1555-1559
• /
• 2005

High-performance fluorescent probes which exhibit either on/off or dual color fluorescence switching in response to the presence of organic vapors with a rapid response, a high sensitivity and a high-contrast on/off signaling ratio were demonstrated on the basis of the vapor-controlled AIEE phenomenon.

• 복식문화연구
• /
• 제25권4호
• /
• pp.509-518
• /
• 2017

As the international competitive landscape deepens, the need to understand foreign cultures and establish effective strategies is increasing. At the beginning of the 20th century, Cartier actively developed exotic designs to secure international competitiveness; theses designs have also been used as design prototypes for Cartier in modern times. The purpose of this study is to analyze the color characteristics and types of exotic designs in the early 20th century, which was a turning point in Cartier's design. After studying the literature, a total of 248 exotic designs were presented in Cartier catalogs. This study also selected overseas monographs from the early 20th century, and their design types were classified and color analysis was performed based on the Natural Color System(NCS). Cartier's exotic designs cover wide range of styles, such as Chinese, Japanese, Persian, Indian and Egyptian styles. Multicolor, primary colors, and contrast are all strongly expressed. 97% of designs contained multiple colors, with at least two colors and maximum of six colors. The most frequently used colors are red, green, and blue, which means that only 9% of the designs do not contain the three colors, showing a high preference for theses three colors. In addition, color combinations of red and green, red and blue, or all three colors are used to show high contrast and utilize complementary colors, or near complementary colors, for coloration. This study is meaningful in that it analyzes the color characteristics of Cartier's exotic designs and translates them into practical data for establishing the color strategies of companies in the global market.

• Fisheries and Aquatic Sciences
• /
• 제14권2호
• /
• pp.130-137
• /
• 2011

Visual stimuli of nets, which affect fishing selectivity, vary by twine diameter, color, and material under different light conditions and visual geometries. In this study, two cylindrical model codends of two mesh sizes, 28 and 43 mm, were made of high-contrast, dark brown polyethylene (PE) netting twine and low contrast, light-blue polyamid (PA) monofilament twine. Each model codend was filled with juvenile seabream and set in the water channel of a light-blue circular tank under a flow speed 0.8 m/s for 30 min. Light conditions were set to relatively bright, dim, and dark. The resulting retention rates of juvenile seabream were 15-35% lower for the low-contrast codend with PA monofilament than for the high contrast PE twine netting under bright and dim light conditions, while no difference was observed under dark conditions. The effects of mesh size and netting contrast on the retention rate were dependent on the light level, while the retention rate due to netting contrast was independent of mesh size. Therefore, low-contrast nets in the codend could help to reduce juvenile bycatch by disturbing the orderly optomotor response.

• 한국인쇄학회지
• /
• 제14권2호
• /
• pp.37-49
• /
• 1996

The practical lith developer is a hydroquinone solution of moderate alkalinity and low free-sulfite ion concentration with potassium bromide as the restraining agent. In the study on composition of ilth developer to promote high sensitivity, high contrast and long term preservation or use, a new composition of lith developer, namely PK lith developer, was developed and of was found that PK lith developer was superior to the lith developer which was commercially available in terms of contrast, speed and preservation. This paper also describes studies on the addition of hdydrazine to PK lith developer, which have led to further improvements in the system.

• 한국실내디자인학회논문집
• /
• 제32호
• /
• pp.97-104
• /
• 2002

The purpose of this study is to suggest the prediction model for the color design by the image types in the office interior. This prediction model of the color design is for the more comfortable environment by using suitable, various colors fitted with business functions. In this research, we carried out the evaluation experiment with the variables such as the color on ceiling, wall, floor and the harmonies of color schemes. We set the prediction index through the multi-regression analysis. And the prediction model was made by these results. The design methods by the prediction model are as follows. 1) The $\ulcorner$variable$\lrcorner$ image was deeply influenced by the value and chroma and it was marked high in low value and high chroma and the harmonies of contrast and different color. 2) The $\ulcorner$comfortable$\lrcorner$ image was related to the value and chroma and it was marked high in high value and low chroma and harmonies of homogeneity and similar. 3) The $\ulcorner$warm$\lrcorner$ image was greatly influenced by the hue and the harmony of color schemes, and it was marked high in the warm colors and harmonies of homogeneity.

• 한국정보디스플레이학회:학술대회논문집
• /
• 한국정보디스플레이학회 2002년도 International Meeting on Information Display
• /
• pp.901-904
• /
• 2002

Display performance of mobile LCDs has been improved according to broadening of their application. But there are many demands from market, such as contrast improvement (high color reproducibility), higher efficiency of light usage, thickness reduction, widening its viewing angle and so on. To respond them we have been developing many new types of films. In this paper we introduce new high contrast white polarizers for better color reproducibility, and new film construction for higher light efficiency.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제10권4호
• /
• pp.1846-1863
• /
• 2016

High dynamic range (HDR) images can present the perfect real scene and rich color information. A commonly encountered problem in practical applications is how to well visualize HDR images on standard display devices. In this paper, we propose a multi-scale decomposition method using guided filtering for HDR image tone mapping. In our algorithm, HDR images are directly decomposed into three layers：base layer, coarse scale detail layer and fine detail layer. We propose an effective function to compress the base layer and the coarse scale detail layer. An adaptive function is also proposed for detail adjustment. Experimental results show that the proposed algorithm effectively accomplishes dynamic range compression and maintains good global contrast as well as local contrast. It also presents more image details and keeps high color saturation.

• 한국정보디스플레이학회:학술대회논문집
• /
• 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
• /
• pp.117-118
• /
• 2006

Top Emission Active Matrix OLED is of particular interest to high performance display consumers. OLEDs offers excellent viewing angle, contrast, and color gambit. The present work centers on the development of a crystalline silicon active matrix OLED for high performance applications.