• Title/Summary/Keyword: 3D Library

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Type Classification and Shape Display of Brazing Defect in Heat Exchanger (열교환기 브레이징 결함의 유형 분류 및 형상 디스플레이)

  • Kim, Jin-Young
    • Journal of Institute of Control, Robotics and Systems
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    • v.19 no.2
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    • pp.171-176
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    • 2013
  • X-ray cross-sectional image-based inspection technique is one of the most useful methods to inspect the brazing joints of heat exchanger. Through X-ray cross-sectional image acquisition, image processing, and defect inspection, the defects of brazing joints can be detected. This paper presents a method to judge the type of detected defects automatically, and to display them three-dimensionally. The defect type is classified as unconnected defect, void, and so on, based on location, size, and shape information of defect. Three-dimensional display which is realized using OpenGL (Open Graphics Library) will be helpful to understand the overall situation including location, size, shape of the defects in a test object.

A Fundamental Study on Applying BIM to Power Manage System of Super Tall Buildings (초고층 건축물 전력관리 시스템에 BIM 적용을 위한 기초적 연구)

  • Jo, Chan-Won;Kwon, Soon-Ho;Lee, Woon-Jae;Roh, Tae-Im;Ock, Jong-Ho
    • Korean Journal of Computational Design and Engineering
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    • v.17 no.2
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    • pp.140-148
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    • 2012
  • This study aims to provide power monitoring system for super tall buildings with 3D BIM (Building Information Modeling) technology. In order to realize this subject, standard specifications for BIM objects and attributes were studied through analyzing processes and elements of electrical utilities for power management systems applied for super tall buildings. These standard BIM specifications could be used by designers, contractors and facility operators, and thus could be helpful to realize BIM information sharing between multiple disciplines and construction phases. And further study has been suggested to develop standard specification and applications from this study.

Construction of Virtual Environment for a Vehicle Simulator (자동차 시뮬레이터의 가상환경 구성에 대한 연구)

  • Chang, Chea-Won;Son, Kwon;Choi, Kyung-Hyun
    • Transactions of the Korean Society of Automotive Engineers
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    • v.8 no.4
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    • pp.158-168
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    • 2000
  • Vehicle driving simulators can provide engineers with benefits on the development and modification of vehicle models. One of the most important factors to realistic simulations is the fidelity given by a motion system and a real-time visual image generation system. Virtual reality technology has been widely used to achieve high fidelity. In this paper the virtual environment including a visual system like a head-mounted display is developed for a vehicle driving simulator system by employing the virtual reality technique. virtual vehicle and environment models are constructed using the object-oriented analysis and design approach. Accordint to the object model a three dimensional graphic model is developed with CAD tools such as Rhino and Pro/E. For the real-time image generation the optimized IRIS Performer 3D graphics library is embedded with the multi-thread methodology. Compared with the single loop apprach the proposed methodology yields an acceptable image generation speed 20 frames/sec for the simulator.

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A Conceptual Framework of Virtual Workplace for Collaborative Design (협업설계를 위한 가상업무공간 구축에 관한 연구)

  • 정다운;김미정;김현경;조명은;이현수
    • Proceeding of Spring/Autumn Annual Conference of KHA
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    • 2000.11b
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    • pp.159-165
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    • 2000
  • The purpose of this study is to develop a virtual office design in a 3D digital environment which involves a consideration of what people do and need in a virtual workplace and then translating that into a virtual environment for collaborative design. Areas in a virtual design office are defined according to different uses or activities in a physical office. The workplace includes a hall and information desk, working area, a conference room, a library, an entertainment room and a management room. It is important to define areas considering shared territory and personal territory. Communication and collaboration amonge designers are provided over the World Wide Web.

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Distributed Design System as a New Paradigm Towards Future Collaborative Architectural Design Process

  • Han, Seung Hoon
    • Architectural research
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    • v.7 no.2
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    • pp.23-33
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    • 2005
  • The use of computers in architectural professions has grown with the power of easy data management, increased sophistication of standalone applications, inexpensive hardware, improved speed of processing, use of standard library and tools for communication and collaboration. Recently, there has been a growing interest in distributed CAAD (Computer-Aided Architectural Design) integration due to the needs of direct collaboration among project participants in different locations, and Internet is becoming the optimal tool for collaboration among participants in architectural design and construction projects. The aim of this research is to provide a new paradigm for a CAAD system by combining research on integrated CAAD applications with recent collaboration technologies. To accomplish this research objective, interactive three-dimensional (3D) design tools and applications running on the Web have been developed for an Internet-based distributed CAAD application system, specifically designed to meet the requirements of the architectural design process. To this end, two different scopes of implementation are evaluated: first, global architecture and the functionality of a distributed CAAD system; and, second, the association of an architectural application to the system.

An Application of HLA/RTI to Manufacturing Simulations (생산시스템 시뮬레이션을 위한 High Level Architecture/Run-Time Infrastructure의 적용)

  • Hong, Yoon-Gee;Kwon, Soon-Jong
    • IE interfaces
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    • v.13 no.3
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    • pp.528-538
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    • 2000
  • HLA is a general-purpose software architecture for distributed simulation designed to support a wide range of simulation approaches and application. The US DoD's HLA for modeling and simulation can certainly be regarded as the state of the art in distributed simulation. It is a mandatory standard for military simulation. The purpose of this paper is to describe applications of HLA/RTI in multiple domains across the manufacturing systems society. In many and large scale industrial systems, enormous data is generated, and is to be managed in an effective way. It needs a high performance common network library. Furthermore, it must satisfy the real function of system facilities as much as possible. The RTI is an implementation of the interface specification, provided as a set of services. Some applications focusing on the area of a small manufacturing system were demonstrated. The integration could be achieved using the HLA, together with interface modules for each of the subsystems. We have found that HLA/RTI are cable of meeting the functional requirements for a given system environment.

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Realization of an output controller simulator based on Windows NT for a direct drive cooperative robot using OpenGL (Windows NT 환경에서 OpenGL을 이용한 직접구동 협조로봇용 Output Tracking 시뮬레이터 구현)

  • 최대범;양연모;안병하
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1995.10a
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    • pp.346-349
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    • 1995
  • In this paperwe develop a real-time simulator for direct drive cooperative robot by using OpenGL in a Windows NT based system. This simulator is composed of 2 parts, a display part and an interface part. In the display part the robot is modelled and rendered in 3D space. To do this OpenGL, a kind of graphic library, is used for rendering and animating robots and kinematics gives the information of the current robot configuration. The control and the feedback data are sent and received via the interface part. In real time simulation interfacing part needs fast data transfer rate and good nosic immunity. In experiment we have simulated 2-link direct drive cooperative robots using the trajectory tracking algorithm proposed in reference.

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Solution State Structure of pA1, the Mimotopic Peptide of Apolipoprotein A-I, by NMR Spectroscopy

  • Kim, Hyo-Joon;Won, Ho-Shik
    • Bulletin of the Korean Chemical Society
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    • v.32 no.9
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    • pp.3425-3428
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    • 2011
  • Apolipoprotein A-I (Apo A-I) is a major component for high density lipoproteins (HDL). A number of mimetic peptides of Apo A-I were screened from the phase-displayed random peptide library by utilizing monoclonal antibodies (A12). Mimetic peptide for A12 epitope against Apo A-I was selected as CPFARLPVEHHDVVGL (pA1). From the BLAST search, the mimetic peptide pA1 had 40% homology with Apo A-I. As a result of the structural determination of this mimotope using homo/hetero nuclear 2D-NMR techniques and NMR-based distance geometry (DG)/molecular dynamic (MD) computations, DG structure had low penalty value of 0.3-0.7 ${\AA}^2$ and the total RMSD was 0.6-1.6 ${\AA}$. The mimotope pA1 exhibited characteristic conformation including a ${\beta}$-turn from Pro[7] to His[11].

Visualization of Medical Images Using Visualization Toolkit (VTK를 이용한 의료영상의 가시화)

  • Choi, H.G.;Tack, G.R.
    • Proceedings of the KOSOMBE Conference
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    • v.1998 no.11
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    • pp.113-114
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    • 1998
  • In this paper, visualization of Visible Human data offered by NLM(National Library of Medicine) is performed using $VTK^{TM}$. Computed Tomography Data set(axial, $587\times341\times256$, and the distance between slices 1mm) is used throughout the study. Before the actual visualization routine, 8 bit-reader class of VTK is developed to transform CT data to VTK dataset. After that, the visualization procedures are done to display 3D image on PC. VTK is freeware, not a commercial software. The results of VTK show relatively good image quality and slower processing time compared with the commercial softwares like IAP, IDL, AVS. Thus if processing time is not the critical factor, VTK is worthy to be used in visualization of the medical images.

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A Real-Time Graphic Driving Simulator Using Virtual Reality Technique (가상현실을 이용한 실시간 차량 그래픽 주행 시뮬레이터)

  • Jang, Jae-Won;Son, Kwon;Choi, Kyung-Hyun;Song, Nam-Yong
    • Journal of the Korean Society for Precision Engineering
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    • v.17 no.7
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    • pp.80-89
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    • 2000
  • Driving simulators provide engineers with a power tool in the development and modification stages of vehicle models. One of the most important factors to realistic simulations is the fidelity obtained by a motion bed and a real-time visual image generation algorithm. Virtual reality technology has been widely used to enhance the fidelity of vehicle simulators. This paper develops the virtual environment for such visual system as head-mounted display for a vehicle driving simulator. Virtual vehicle and environment models are constructed using the object-oriented analysis and design approach. Based on the object model, a three-dimensional graphic model is completed with CAD tools such as Rhino and Pro/ENGINEER. For real-time image generation, the optimized IRIS Performer 3D graphics library is embedded with the multi-thread methodology. The developed software for a virtual driving simulator offers an effective interface to virtual reality devices.

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