机构

• 自动化研究所 [3]
• 长春光学精密机械与物... [1]

采集方式

• OAI收割 [4]

内容类型

• 期刊论文 [3]
• 会议论文 [1]

发表日期

• 2009 [1]
• 2006 [1]
• 2005 [1]
• 2003 [1]

学科主题

筛选

浏览/检索结果: 共4条，第1-4条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Configuring an electrostatic membrane reflector with potentials exerted on distributed electrodes (EI CONFERENCE) 会议论文  OAI收割 2009 IEEE International Conference on Mechatronics and Automation, ICMA 2009, August 9, 2009 - August 12, 2009, Changchun, China 作者:  Zhang P.;  Shi G. 收藏  |  浏览/下载：19/0  |  提交时间：2013/03/25 Electrostatic membrane reflector (EMR) is very promised for optical quality application with the merits of utra-lightweight and flexible. Configuring a circular membrane reflector with electrostatic potentials exerted on distributed electrodes can approximatively produce a parabolic shape. A 300mm EMR (made from polyimide) stretched by distributed electrodes below is designed  and the number of concentric electrodes needed for membrane shape forming is analysed. First  based on an analytical solution of Poisson's equation  determine the membrane control matrix by finding influence functions of 3 concentric electrodes and 6 control points on membrane surface in order to compute the needed voltages exerted on the distributed electrodes by the method of least-squares fitting. Then the final shape solved by finite element analysis with ANSYS is contrasted with the paraboloid and deviates greatly when the central displacement of membrane is beyond 2.5mm  but in this range increasing the number of electrodes and control points will get a better shape. The corresponding errors are analyzed  and the control method is concluded. Only using the integrated method of analytical computation  numerical analysis and experiment  the membrane shape of certain central displacement can be exactly predicted and controlled. 2009 IEEE.   Coplanar circles, quasi-affine invariance and calibration 期刊论文  OAI收割 IMAGE AND VISION COMPUTING, 2006, 卷号: 24, 期号: 4, 页码: 319-326 作者:  Wu, YH;  Li, XJ;  Wu, FC;  Hu, ZY 收藏  |  浏览/下载：20/0  |  提交时间：2015/11/06 associated lines with two coplanar circles  projective invariance  quasi-affine invariance  circular points  camera calibration   Camera calibration and 3D reconstruction from a single view based on scene constraints 期刊论文  OAI收割 IMAGE AND VISION COMPUTING, 2005, 卷号: 23, 期号: 3, 页码: 311-323 作者:  Wang, GH;  Tsui, HT;  Hu, ZY;  Wu, FC 收藏  |  浏览/下载：36/0  |  提交时间：2015/11/06 camera calibration  3D reconstruction  Absolute conic  circular points  single view modeling   A new easy camera calibration technique based on circular points 期刊论文  OAI收割 PATTERN RECOGNITION, 2003, 卷号: 36, 期号: 5, 页码: 1155-1164 作者:  Meng, XQ;  Hu, ZY 收藏  |  浏览/下载：20/0  |  提交时间：2015/11/08 computer vision  projective geometry  circular points  camera calibration  3D reconstruction