• Title/Summary/Keyword: 3- Dimension

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A study on the process for precision forming by 3-dimension bending machine (3 차원 벤딩 머신에서 정밀 성형을 위한 공정 개발에 관한 연구)

  • Kim H.J.;Lim S.H.;Lee C.M.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2005.06a
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    • pp.1897-1900
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    • 2005
  • The purpose of this study is to investigate the bending process for manufacturing of sound pipe by 3 dimension bending machine. The arbitrarily-bended pipe is widely used in a heat exchanger system. The pipe should be formed precisely for assembling of heat changer. And, spring back effect and variation of the pipe thickness should be controlled effectively. We described the change of spring back amount and thickness variation of the pipe according to the change of bending radius and bending angle by FEM analysis. The analysis is adopted the elasic-plastic analysis and contact analysis on MARC software.

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Aberrant Right Subclavian Artery in Children -Report of Cases- (소아에서의 우측 쇄골하동맥 기시이상 -수술치험 2례-)

  • 이인성
    • Journal of Chest Surgery
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    • v.26 no.4
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    • pp.308-311
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    • 1993
  • Aberrant right subclavian arteries were experienced in two young children. This is a rare aortic arch anomaly that usually does not produce symptoms. Symtomatic patients require surgical interventions.We describe two young children who had aberrant right subclavian artery with symptoms of difficulty in swallowing and respiratory problems. Diagnosis was made by esophagography, aortography and 3-Dimension chest CT. Operation had been advocated through right thoracotomy without difficulty for ligation, division and anastomosis to the ascending aorta. Dysphagia lusoria was immediately relieved and postoperative course was uneventful. We consider that the right thoracotomy is the choice of operative approach and noninvasive diagnosis by 3-Dimension chest CT is easily made for infant with aberrant right subclavian artery.

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A Study on the surface and analysis of phase map using optical interferometer (광 간섭계를 이용한 표면 및 위상지도 분석에 관한 연구)

  • Park, June-Do;Shin, Soo-Yong;HwangBo, Seung;Kang, Yong-Chel
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2005.07a
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    • pp.436-437
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    • 2005
  • 3-dimension object's feature measurement is used several industrial field to produce for examination of demanded high quality products by using optical measurement method. 3-dimension object's feature measurement is separated surface scanning and surface non-scanning. In this research, we illuminated interfero-pattern to object, it was constructed with Michelson interferometer by using laser is one of surface non-scanning method. And we extracted phase-map, it is one of featural measurement analysis of 3-dimensional object by using a phase shifting theory.

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Measurement of Defects on the Wall by use of the Inclination Angle of Laser Slit Beam and Position Tracking Algorithm of Camera (레이저 슬릿빔의 경사각과 카메라 자세 추정 알고리즘을 이용한 벽면 결함 측정)

  • 김영환;송상호;윤지섭;강이석
    • 제어로봇시스템학회:학술대회논문집
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    • 2000.10a
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    • pp.339-339
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    • 2000
  • In this parer, a method of measuring the size of defects on the wall and restructing the defect image of 3-dimension is developed based on the tracking algorithm of a camera position which uses the inclination angle of line slit beam for overcoming the difficulty of the corresponding problem identifying the image point in the both image. In the experiments, an algorithm for estimating the horizontal angle of CCD camera is presented and validated by applying it to the measurement of area and length under the variations of both the distance and the angle of CCD camera. And its performance is compared to that of the rotating and mapping method of image which has the Euclidian distance.

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Camera Focal Length Measuring Method and 3-Dimension Image Correspondence of the Axial Motion Model on Stereo Computer Vision (3-Dimension 영상을 이용한 카메라 초점측정 및 동일축 이동 모델의 영상 정합)

  • 정기룡
    • Journal of the Korean Institute of Navigation
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    • v.16 no.3
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    • pp.77-85
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    • 1992
  • Camera arrangement for depth and image correspondence is very important to the computer vision. Two conventional comera arrangements for stereo computer vision are lateral model and axial motion model. In this paper, using the axial motion stereo camera model, the algorithm for camera focal length measurement and the surface smoothness with the radiance-irradiance is proposed fro 3-dimensional image correspondence on stereo computer vision. By adapting the above algorithm, camera focal length can be measured precisely and the resolution of 3-dimensional image correspondence has been improved comparing to that of the axial motion model without the radiance-irradiance relation.

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The Analysis on 3-Dimensional Stereoscopic Video Production Using Anaglyph Method_Focused on the Animation 'YGGDRASIL' (애너글리프(Anaglyph)를 이용한 3차원 입체영상 제작 사례에 대한 분석 -애니메이션 <이그드라씰>을 중심으로)

  • Kang, Hyun-Jong
    • Journal of Korea Game Society
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    • v.13 no.3
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    • pp.131-140
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    • 2013
  • The study analyzes how to create stereoscopic image in 3-dimension animation 'Yggdrasil', produced in Autodesk Maya(3D animation software), using Anaglyph method that is the oldest in 3-dimension stereoscopic video production. The anaglyph method help to produce stereoscopic images easily and to give effective 3D effect encoding each eye's image using filters of different colors. In addition, space direction applied visual perception theory expresses necessary distance, depth and speed effectively in 'Yggdrasil'

A Study of Implementation for Visualizing 3 Dimension Content Generation using Index (인덱스를 활용한 3차원 콘텐츠 생성 시각화 구현에 관한 연구)

  • Lee, Hyun-Chang;Shin, Seong-Yoon;Jang, Hee-Seon;Koh, Jin-Gwang
    • Journal of the Korea Society of Computer and Information
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    • v.15 no.10
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    • pp.11-17
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    • 2010
  • Mobile device, one of typical devices in ubiquitous environment, is received attention owing to portability. In these days, technical researches on a kind of the device are focusing on applications of smart phone. For example, the techniques using geographical position and applied instances such as augmented reality techniques are gradually increasing. That makes data processing important. Mobile application services for users also require various application techniques based on moving objects. In addition, they require the techniques that processed data are needed to be shown in visualization. However, this is reality that it lacks of showing visualization works to improve the understanding of thing what it is. To reduce or solve the problems, in this paper we show the results to implement the R tree based 3 dimension index architecture in visualization. Further, we implemented and present creating objects, showing in 3D for the objects, catching spatial position on a node map through mini map function and improving the understanding of R tree by visualizing.