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Paper Abstract and Keywords
Presentation 2009-02-05 13:55
Estimation of extrinsic parameters of the perspective camera model based on the geometric invariant of a planar symmetry object
Tatsunori Hirata, Haruki Kawanaka, Masahiro Miyaji, Koji Oguri (Aichi Pref.Univ.) ITS2008-67 IE2008-237
Abstract (in Japanese) (See Japanese page) 
(in English) When measuring and recognizing it with the camera, the presumption accuracy of the camera parameter decides and puts the accuracy of the output of the system. However, for example, the position and a direction may shift gradually by vibration of an installation instrument, a shock and aging, thermal expansion, etc. So the increase in a measurement error is not avoided with the original camera parameter. Moreover, when the camera like the pan, tilt, zoom, etc. is adjusting controlled, it is necessary to update the camera parameter. Therefore we think that we demand an unknown parameter as a restriction condition with the plane symmetry characteristic of the photography object. Generally the parameter estimation in a projection camera model serves as a nonlinear optimization problem. But as update type algorithm, we aim at the method that is computability easily in a short time.
Keyword (in Japanese) (See Japanese page) 
(in English) Camera Calibration / Perspective Projection / Extrinsic Parameter / Symmetry / / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 424, ITS2008-67, pp. 189-194, Feb. 2009.
Paper # ITS2008-67 
Date of Issue 2009-01-28 (ITS, IE) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF ITS2008-67 IE2008-237

Conference Information
Committee IE ITS ITE-HI ITE-ME ITE-AIT  
Conference Date 2009-02-04 - 2009-02-05 
Place (in Japanese) (See Japanese page) 
Place (in English) Graduate School of Information Science and Technology Hokkaido Univ 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Image Processings for ITS, Visual Media Engineering, etc. 
Paper Information
Registration To ITS 
Conference Code 2009-02-IE-ITS-HI-ME-AIT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Estimation of extrinsic parameters of the perspective camera model based on the geometric invariant of a planar symmetry object 
Sub Title (in English)  
Keyword(1) Camera Calibration  
Keyword(2) Perspective Projection  
Keyword(3) Extrinsic Parameter  
Keyword(4) Symmetry  
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Keyword(6)  
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1st Author's Name Tatsunori Hirata  
1st Author's Affiliation Aichi Prefectural University (Aichi Pref.Univ.)
2nd Author's Name Haruki Kawanaka  
2nd Author's Affiliation Aichi Prefectural University (Aichi Pref.Univ.)
3rd Author's Name Masahiro Miyaji  
3rd Author's Affiliation Aichi Prefectural University (Aichi Pref.Univ.)
4th Author's Name Koji Oguri  
4th Author's Affiliation Aichi Prefectural University (Aichi Pref.Univ.)
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Speaker Author-1 
Date Time 2009-02-05 13:55:00 
Presentation Time 25 minutes 
Registration for ITS 
Paper # ITS2008-67, IE2008-237 
Volume (vol) vol.108 
Number (no) no.424(ITS), no.425(IE) 
Page pp.189-194 
#Pages 6 
Date of Issue 2009-01-28 (ITS, IE) 

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