• Title/Summary/Keyword: Moire

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A Study on the Computerization of Anthropomorphic Data (인체 형상 자료의 전산화에 관한 연구)

  • Lee, Geun-Bu
    • Journal of the Ergonomics Society of Korea
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    • v.7 no.2
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    • pp.23-30
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    • 1988
  • The methods suggested up to now for 3-dimensional anthroponetry require much efforts and costs in measuring and analysing. To solve these problems, we adopt the methods such as Moire Interferometry, Image processing and Computer Vision Technique which are efficient in processing anthropomorphic data. Moire contourgraph was constructed by using Ar-ion laser as a light source (2 Watt power and 5145 A wavelength) and laser beam expander(20X). Image data can be 3-dimensionally reconstructed as the surface patch and geographical relation between faces expressed by mash-point and edges as units. This research is focused on the followings; 1) Development of an economical and reliable measuring method. 2) Design of reproduction methods of 3-dimensional human body data. Therefore, our research makes it possible to study further advanced quantitative analysis of human body.

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A new experimental technique on the tubular joints of spatial grid structures

  • Chen, Zhi-Hua;Sun, Guo-Jun;Luo, Zhi-Shan
    • Structural Engineering and Mechanics
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    • v.40 no.6
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    • pp.801-811
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    • 2011
  • A new experimental technique was developed on the plate-inserted welded tubular joints of spatial grid structures. In the experimental technique, a microcomputer controlling instrument of moire intervention (MCIMI) was adopted. A test was designed on the plate-inserted welded tubular joints of spatial grid structures to show the effectiveness of the MCIMI technique. Both traditional electrical measuring technique and MCIMI technique were employed in the test. The test results showed that the MCIMI technique was feasible in the case of the complicated tests on steel structures. The MCIMI technique not only implemented the limitation of traditional electrical measuring technique, but also improved the accuracy of the test. According to the test results, we further examined the plate-inserted welded tubular joints in the cable-stayed spatial grids of the Binhai International Convention & Exhibition in Tianjin, China. The analysis showed the joints are safely designed with adequate conservatism. The research provided a new application of MCIMI in the field of large-scale structure engineering.

A Study on the Sheet Metal Forming and the Plastic Deformation Characteristic by Using PAM-STAMP (PAM-STAMP를 이용한 박판성형성 및 소성변형 특성에 관한 연구)

  • Kang, Dae-Min
    • Journal of Ocean Engineering and Technology
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    • v.13 no.1 s.31
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    • pp.29-38
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    • 1999
  • In this paper the forming simulation of circular bulge by using PAM-STAMP has been performed to estimate the sheet metal forning and the plastic deformation characteristic of circular bulge. The uniaxial tension tests adn bulge tests are carried out for studying the forming characteristics of materials, and also Moire experiment are carried out for measuring the radius of curvature of the bulge and the polar compressive thickness strain. In order to compare the simulation results with the experiment and Hills theory, the relationships between redius of curvature adn polar height of the bulge, between hydraulic pressure and polar height, and between polar compressive thickness strain and polar height, are used. According to this study, the results of simulation and Hills theory are good agreement to the experiment. So, the results of simulation by using PAM-STAMP and Hills theory will give engineers good information to assess the formagbility and plastic deformation characteristic of hydraulic circular bulge test.

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Fundamental Morphological Consideration for the 3-D Shape Analysis of the Middle-aged Women's Breast (중년 여성의 3차원 유방 형상 분석을 위한 방법론 연구)

  • 이현영;홍경희
    • Journal of the Korean Society of Clothing and Textiles
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    • v.26 no.5
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    • pp.703-714
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    • 2002
  • This paper proposed the basic consideration for the reliable 3-D measurement and analysis of middle-aged women's breast using 3-D phase-shifting moire topography. The surface borderline of the breast based on the anatomical structure on the skin was suggested. Various breast dimensions that can be measured using 3-D measurement system and their measuring methods were discussed. Tips for the measurement of sagged breast were also proposed. It is expected that these basic considerations contribute to draw attention to the reliable measurement of women's breast and provide a kind of tools for the standardization of 3-D shape measurement of breast.

The n-p-n-p layer stacked color detector for CMOS image sensor (CMOS 이미지 센서용 n-p-n-p 적층형 색 검출기)

  • Song, Young-Sun;Yun, Il-Gu
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2005.07a
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    • pp.72-73
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    • 2005
  • In this paper, the simulation of the n-p-n-p layer stacked color detector is presented. A color detector based on vertically integrated structures of silicon can overcome color moire or color aliasing effect. The color detector is designed to separate the fundamental chromatic components at each junction and exhibits maxima of the spectral sensitivity at red, green, and blue region, respectively. From this result, it is observed that the spectral response can be controlled by the doping concentration and structure of the devices.

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