• Title/Summary/Keyword: Color Processing

Search Result 2,231, Processing Time 0.029 seconds

Color manipulation of silica aerogel by copper incorporation during sol-gel process

  • Lee, Sang-Seok;Park, Il-Kyu
    • Journal of Ceramic Processing Research
    • /
    • v.20 no.1
    • /
    • pp.30-34
    • /
    • 2019
  • Copper (Cu)-incorporated silica aerogel was synthesized by a sol-gel process with two-step drying process for color modification. The microstructure of the silica aerogel was not affected significantly by the Cu concentration and an amorphous structure was maintained without any crystalline impurity phases. The textural properties of the silica aerogels investigated by using N2 adsorption-desorption isotherms exhibited the typical features of mesoporous materials. The pore size and porosity were not changed significantly even with the incorporation of Cu up to 1.5 M, which indicates negligible variation of thermal insulating properties. However, the color of the aerogel changed from white and light greenish to dark greenish with increasing Cu content. The color change of the silica aerogel was due to the modification of the electron energy band structure of silica by the Cu atomic levels. Therefore, the color of the silica aerogel powders could be manipulated by incorporating Cu without degrading the thermal insulating properties.

The Improvement of Rough- set Theory Histogram in Color- image Segmentation

  • Zheng, Qi;Lee, Hyo Jong
    • Proceedings of the Korea Information Processing Society Conference
    • /
    • 2011.11a
    • /
    • pp.429-430
    • /
    • 2011
  • Roughness set theory is a popular topic to use in color-image segmentation. A new popular color image segmentation algorithm is proposed by scientists with the point using traditional histogram and Histon construct roughness set histogram. But, there is still a problem about that is the correlativity of color vector in roughness set histogram, which take an inactive effect in the process of color-image segmentation. Therefore, this paper represents further research based on this and proposed an improved method proved through lot of experiments. The experimental result reduces the correlativity of color vector in roughness set histogram and calculation time remarkably.

Energy Keys Based Scalable Indexing Schemes of Large Color Image Archives (에너지 키에 기초한 대형 칼라 영상 기록물의 계층적 인덱싱 기법)

  • 박대철;강종묵
    • Proceedings of the Korea Institute of Convergence Signal Processing
    • /
    • 2001.06a
    • /
    • pp.225-228
    • /
    • 2001
  • We propose a method which has effective scalable indexing characteristics of large color image archives. Color key and energy key method which uses provides high performance of fast accessing and has almost constant query response time over DH size.

  • PDF

Segmentation of 3D Visible Human Color Images by Balloon (Balloon을 이용한 3차원 Visible human 컬러 영상의 분할 방법)

  • 김한영;김동성;강흥식
    • Proceedings of the IEEK Conference
    • /
    • 2001.06e
    • /
    • pp.73-76
    • /
    • 2001
  • A segmentation is a prior processing for medical image analysis and 3D reconstruction. This Paper provides the method to segment 3D Visible Human color images. Firstly, the reference images that have a initial curve are segmented using Balloon and the results are propagated to the adjacent images. In the propagation processing, the result of the adjacent slice is modified by Edge-limited SRG Finally, the 3D Balloon improves the segmentation results of each 2D slice. the proposed method's performance was verified through the experiments to segment thigh muscles of Visible Human color images.

  • PDF

Trends in image processing techniques applied to corrosion detection and analysis (부식 검출과 분석에 적용한 영상 처리 기술 동향)

  • Beomsoo Kim;Jaesung Kwon;Jeonghyeon Yang
    • Journal of the Korean institute of surface engineering
    • /
    • v.56 no.6
    • /
    • pp.353-370
    • /
    • 2023
  • Corrosion detection and analysis is a very important topic in reducing costs and preventing disasters. Recently, image processing techniques have been widely applied to corrosion identification and analysis. In this work, we briefly introduces traditional image processing techniques and machine learning algorithms applied to detect or analyze corrosion in various fields. Recently, machine learning, especially CNN-based algorithms, have been widely applied to corrosion detection. Additionally, research on applying machine learning to region segmentation is very actively underway. The corrosion is reddish and brown in color and has a very irregular shape, so a combination of techniques that consider color and texture, various mathematical techniques, and machine learning algorithms are used to detect and analyze corrosion. We present examples of the application of traditional image processing techniques and machine learning to corrosion detection and analysis.

Color Temperature Conversion of Uncalibrated Video Signal Based on Color Compensation in POP-TV

  • Do, Hyun-Chul;Chien, Sung-Il;Tae, Heung-Sik
    • 한국정보디스플레이학회:학술대회논문집
    • /
    • 2003.07a
    • /
    • pp.718-721
    • /
    • 2003
  • It is often desirable that manufacturers and users can convert the reference white of display into the preferred color temperature by controlling the color temperature that is one of representative color characteristics of a light source. Accordingly, this paper proposes an efficient method of color compensation for displaying the uncalibrated video signal in PDP-TV and is also shown to be successfully coupled with flexible color temperature conversion based on the signal processing technique.

  • PDF

A Study on the System for Lane Departure Detection Using Color Data Processing (컬러정보처리를 이용한 차선이탈경보시스템의 연구)

  • Shin Cheon Woo
    • Journal of Korea Multimedia Society
    • /
    • v.8 no.3
    • /
    • pp.428-437
    • /
    • 2005
  • In this paper, we developed lane departure warning system for lane departure situation of vehicle, accidentally. Color level of yellow lane of road side is changed to black and white level. And black and white level value of relevant pixel of original and yellow lane through added process of this are emphasized. In lane departure detection system, color image data processing method could improve the recognition of the yellow lane(central lane). We could get a system Performance of the high-speed image data Processing. Therefore, lane departure warning system will be utilized at the device for the safety going of the vehicle.

  • PDF

The Development of Processing Negation and Opposites Acquisition from 3 to 6 Year-old Children ($3{\sim}6$세 아동의 대립어 습득 및 부정어 처리 발달)

  • Kim, Hyoung-Jai
    • The Korean Journal of Community Living Science
    • /
    • v.19 no.4
    • /
    • pp.569-580
    • /
    • 2008
  • The purpose of this study is to investigate opposites acquisition and tendency of processing negations about directional oppositionality from 3- to 6-old Korean children. The data were collected from 80 children from a daycare center and 20 university students in Busan, Korea. In Experiment 1, participants were asked to produce opposites for common terms related to colors, directions, and dimension adjectives. In Experiment 2, they were asked to make pictures corresponding to statements with negations(e. g. The arrow is NOT pointing up.). Summarizing the overall results, first, children over 5 considered 'blue' and 'red' as opposites colors in the case of not well-known color opposites. If there exists an opposite color, color opposites have been acquired from 6 year-olds, the directional opposites started from 3 year-olds, and the opposites of dimension adjectives did from 5 year-olds. Second, preferring the antipodal color opposites started from 6 and preferring the antipodal direction did from 3. Consequently, 3-to 6 year-old children acquired opposites at different age and opposites dimension. Also the opposites dimension have an effect on processing negation of young children.

  • PDF

Sorting Cut Roses with Color Image Processing and Neural Network

  • Bae, Yeong Hwan;Seo, Hyong Seog;Choi, Khy Hong
    • Agricultural and Biosystems Engineering
    • /
    • v.1 no.2
    • /
    • pp.100-105
    • /
    • 2000
  • Quality sorting of cut flowers is very essential to increase the value of products. There are many factors that determine the quality of cut flowers such as length, thickness, and straightness of stem, and color and maturity of bud. Among these factors, the straightness of stem and the maturity of bud are generally considered to be more difficult to evaluate. A prototype grading and sorting machine for cut flowers was developed and tested for a rose variety. The machine consisted of a chain-drive feed mechanism, a pneumatic discharge system, and a grading system utilizing color image processing and neural network. Artificial neural network algorithm was utilized to grade cut roses based on the straightness of stem and maturity of bud. Test results showed 89% agreement with human expert for the straightness of stem and 90% agreement for the maturity of bud. Average processing time for evaluating straightness of the stem and maturity of the bud were 1.01 and 0.44 second, respectively. Application of neural network eliminated difficulties in determining criteria of each grade category while maintaining similar level of classification error.

  • PDF

Design of high speed data processing controller for the full color LED display board system (풀칼라 LED 전광판용 고속 데이터처리 제어장치 설계)

  • Ha, Young-Jae;Jin, Byung-Yun;Kim, Sun-Hyung
    • Journal of the Korea Institute of Information and Communication Engineering
    • /
    • v.14 no.2
    • /
    • pp.462-468
    • /
    • 2010
  • In this paper, the new efficient drive control technology based on the conventional full-color electric display board image processing method is proposed. This technology can be applied to high-fidelity large size panel TV and LCD Display, and makes high-fidelity-display-drive control possible in those. The proposed drive control technology can strengthen the image processing function of the conventional technology. Also, the automatic or manual adjustment of contrast, bright, tint, color, gamma revision, etc. can help to achieve high-fidelity vision. This technology can be adopted with lower price.