ASIA unversity:Item 310904400/4401
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 90120/105278 (86%)
造访人次 : 9116550      在线人数 : 362
RC Version 6.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻
    ASIA unversity > 資訊學院 > 資訊傳播學系 > 期刊論文 >  Item 310904400/4401


    题名: Camera calibration with respect to computer monitors using eye-glasses with a laser pointer for virtual reality applications
    作者: C. C. Lai;W. H. Tsai
    贡献者: Department of Information Communication
    日期: 2002
    上传时间: 2009-11-25 10:31:13 (UTC+8)
    出版者: Asia University
    摘要: A new approach to camera calibration with respect to a computer monitor is proposed. The camera location parameters, including three position and three orientation parameters, obtained from such calibration are useful for many virtual reality applications in which a camera is mounted on or located near the monitor to “look at” a user in front of the monitor. The calibration problem is solved indirectly by introducing an auxiliary tool, a pair of specially designed eyeglasses, with a laser pointer mounted on the nosepiece between the two glass frames. In the calibration procedure, the pose of the eyeglasses with respect to the camera is first computed analytically using the eyeglasses’ shape information, which is composed of two circles coming from the glass frames and two parallel lines coming from the nosepiece. Next, the line equations of the laser beams with respect to the camera are derived from the pose of the eyeglasses, and the relative position of a corner on the monitor plane with respect to the camera is computed from the information of the intersection of the two laser beam lines created by the laser pointer pinpointing the corner from two different places. After three corners’ positions with respect to the camera are computed, the plane equation of the monitor screen and the six location parameters with respect to the monitor are obtained. The proposed method is easy and practical for fast camera calibration, which is required each time the camera is moved. Experimental results show the effectiveness of the proposed approach. Three applications of the proposed method, namely, VR scene display, cursor control by the head direction, and face view rectification for preserving eye contact in video conferencing or Internet
    telephony, are also discussed, with their respective mathematics derived in detail.
    關聯: Pattern Recognition and Image Analysis (EI) 12 (1): 80-96
    显示于类别:[資訊傳播學系] 期刊論文


    档案 描述 大小格式浏览次数
    310904400-4401.doc33KbMicrosoft Word357检视/开启


    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - 回馈