• Title/Summary/Keyword: color property

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A Perception-based Color Correction Method for Multi-view Images

  • Shao, Feng;Jiang, Gangyi;Yu, Mei;Peng, Zongju
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.5 no.2
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    • pp.390-407
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    • 2011
  • Three-dimensional (3D) video technologies are becoming increasingly popular, as it can provide users with high quality and immersive experiences. However, color inconsistency between the camera views is an urgent problem to be solved in multi-view imaging. In this paper, a perception-based color correction method for multi-view images is proposed. In the proposed method, human visual sensitivity (VS) and visual attention (VA) models are incorporated into the correction process. Firstly, the VS property is used to reduce the computational complexity by removing these visual insensitive regions. Secondly, the VA property is used to improve the perceptual quality of local VA regions by performing VA-dependent color correction. Experimental results show that compared with other color correction methods, the proposed method can greatly promote the perceptual quality of local VA regions greatly and reduce the computational complexity, and obtain higher coding performance.

Natural Dyeing of Silk Fabrics with Undaria Pinnatifida Extracts (미역 추출물을 이용한 견직물의 천연염색)

  • Kim, Sangyool;Jeon, Soonduk
    • Journal of Fashion Business
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    • v.18 no.5
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    • pp.69-81
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    • 2014
  • Fabric made of 100% silk was dyed with Undaria pinnatifida extracts under different conditions such as varing colorant concentration, temperature, time and dyebath pH. The dye uptake (K/S, value), CIE L*,a*,b* and Munsell values of the dyed samples and mordanted samples were measured. Colorfastness, antibacterial property and UV protection property were also evaluated. As colorants concentration increased, the dye uptake increased progressively and maximum color strength was obtained at 100% V/V. Dye uptake also increased with increasing temperature and time, and the maximum color strength was obtained at $80^{\circ}C$ and 60min. With pre-mordanting, the color of the Al and Fe mordanted silk fabrics was yellow on the Munsell color system, while the Cu mordanted fabric was a greenish color. Al and Fe post-mordanted fabrics had a yellow tone, and the Cu post-mordanted fabric had a yellow greenish tone. The light fastness property of the Cu mordanted silk fabric was relatively good, The effect of Al and Fe mordanting on fastness was insignificant. The antibacterial activity of dyed and unmordanted silk fabric was excellent, whereas fabric dyed and mordanted with Undaria pinnatifida extract demonstrated superior ultraviolet protection.

Development and Performance Property Investigation of Lighting System using Plastic Optical Fiber (플라스틱 광섬유를 이용한 조명시스템 개발과 특성 분석)

  • Shin, Sang-Uk;Yi, Chin-Woo
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.24 no.12
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    • pp.25-32
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    • 2010
  • Compared to general lighting method, the lighting system that uses optic fiber can provide only the visible light of good quality to subject by eliminating ultraviolet ray and infrared ray. Thanks to this merit, it is possible to prevent the hard phenomenon of subject caused by ultraviolet ray and infrared ray and to provide the agreeable light environment. This study developed indoors illumination system of high color rendering on the basis of plastic optic fiber with excellent optical property and processing to substitute halogen lamp which has been used for excellent color rendering in spite of low efficiency and short life. Producing pilot product of the designed illumination system and evaluating the property of electric and optical property, ultraviolet ray radiation quantity and temperature property, this study verified the excellence of suggested lighting system of plastic optic fiber.

Synthesis, application of thermally stable red dyes for LCD colorfilter ; Influence of dye structures on the aggregation property in the film state

  • Sakong, Chun;Kim, Young-Do;Kim, Jae-Pil
    • 한국정보디스플레이학회:학술대회논문집
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    • 2008.10a
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    • pp.847-850
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    • 2008
  • Three thermally stable red dyes of azo, quinacridone and perylene derivatives were synthesized and dye-based color filters were manufactured for liquid crystal display. Aggregation behavior of the dyes and their spectral property in film state were investigated by concentration dependent spectroscopy and field emission scanning electron microscopy (FE-SEM). These dyes have remarkable difference on their aggregation behavior in film state. Such difference of aggregation behavior affects the spectral property of the film, and it can cause decreasing the transmittance of dye-based color filters.

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Dyeing of silk with natural dyes from Atractylodes japonica (삽주 추출물을 이용한 견직물의 천연염색)

  • Kim, Sang Yool
    • The Research Journal of the Costume Culture
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    • v.22 no.3
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    • pp.361-370
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    • 2014
  • The fabric, 100% Silk, was dyed with Atractylodes japonica extract solution. The effects of concentration of extracts (colorant), temperature of dyeing, time of dyeing and pH of dye bath were studied. As the concentration of extracts increased, color strength (K/S value) increased progressively. The K/S values increased with raising temperature, time and proper conditions were $80^{\circ}C$ and 80 minutes. Maximum K/S value was obtained at pH 3. The K/S values of mordanted fabrics were increased with increasing mordant concentration up to specific values. Surface color of dyed and mordanted fabrics were yellowish. Light color fastness of fabric with mordanting was fairly good 3/4 rating. The mordanted silk fabrics showed excellent antibacterial activity. The silk fabric dyed with Atractylodes japonica extract showed a superior UV protective property.

A Study on Coordination Image of Korean city woman's Face Color (5YR 7/3) and Clothes Colors (한국도시여성의 얼굴색과 의복색과의 배색이미지에 관한 연구)

  • 이정옥
    • Journal of the Korean Home Economics Association
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    • v.33 no.2
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    • pp.168-180
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    • 1995
  • The purpose of present study was to examine how each clothes colors on the basis of 5YR 7/3 face color affect clothes colors images as follows : (1) what general consciousness of clothes colors in, (2) how the impression of the harmony of 5YR 7/3 face color and clothes colors is, (3) when we divide clothes colors according to the property of colors- chromatic color and achromatic color, cool color.neutral color.warm color, in tone, in color colume- if there is the difference of visual evaluation, (4) image analysis of 45 clothes colors with the view of each kind of adjectives. The result of this study is as the following: 1. As a result of the analysis of general consciousness on clothes colors, when subjects chose clothes, they most considered colors and they also considered their face colors. They would choose the color of clothes, which were becoming to their having clothes colors or their face colors when they bought clothes. 2. The impressions of coordination of 5YR 7/3 face color and clothes colors consisted of three dimensions - evaluation, activity and harmony. 3. It was known that as a result of the analysis of visual evalutional differences according to dividing the clothes colors by property of colors, there were such notable differences that they might effect the coordination images of face color and clothes colors differently. 4. After arranging 45 clothes colors on the graphs in 17 adjectives, gethering them thogether in each dimension and as the result of the analysis in the evaluation dimension, estimation of yellow, light green column were low and that of achromatic colors were high. That is, it was known that the evalution dimension was concerned with hue of the color properties. In activity dimension, there were different image according to each adjectives. That is, it was known that the evalution dimension was concerned with hue of the color properties. In activity dimension, there were different image according to each adjectives. That is, it was known that the activity demension was concerned with value and chroma of the color properties. In harmony dimension, achromatic columm was high and yellow, green yellow, vivid green columm were low in harmony. That is, it was known that the harmony demension was concerned with hue of the color properties.

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The Effect of Combination Ratio of Dye Concentration on Black Dyeing Property of PET Fabric (분산염료의 농도조합이 PET 섬유의 Black 염색성에 미치는 영향)

  • Lee, Jeong-Jin;Kim, Hye-Rim;Jang, Hye-Gyeong
    • Proceedings of the Korean Society of Dyers and Finishers Conference
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    • 2008.10a
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    • pp.13-14
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    • 2008
  • In black dyeing of PET fabric, high concentrations of disperse dyes of three primary color are generally used, which leads low exhaustion level of dye and discharge of a large amount of unfixed dye into dyehouse effluent. In this study, the effect of combination ratio of dye concentration, liquor ratio, and dyeing pH on dyeing and color property of black dyed PET fabric was investigated.

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Image Retrieval using Fast Wavelet Histogram and Color Information (고속 웨이블렛 히스토그램과 색상정보를 이용한 영상검색)

  • 김주현;이배호
    • Proceedings of the IEEK Conference
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    • 2000.06d
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    • pp.194-197
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    • 2000
  • Wavelet transform used for content-based image retrieval has good performance in texture image. Image features for content-based image retrieval are color, texture, and shape. In this paper, we use color feature extracted from HSI color space known as most similar vision system to human vision system and texture feature extracted from wavelet histogram which has multiresolution property. Proposed method is compared with HSI color histogram method and wavelet histogram method. It is shown better performance.

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Studies on the Natural dyes(II) - Dyeing of silk fibers by Gromwell color matter - (천연염료에 관한 연구(II) -자근색소에 의한 견섬유염색 -)

  • Cho Kyung Rae
    • Journal of the Korean Society of Clothing and Textiles
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    • v.13 no.4
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    • pp.370-379
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    • 1989
  • In previous paper, the optical behavior of coloring matter of Cromwell under several conditions were investigated. In this paper, the fading behavior of color solution extracted from Growell by methanol, dyeing properties of this color on the silk fibers in water and methanol, the three property of color of dyed silk fabrics, and fading behavior of dyed silk fabrics with Cromwell color under light and washing were discussed.

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