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Paper Abstract and Keywords
Presentation 2014-01-24 15:30
Improvement of a Decode method for Two-Dimensional Codes with Auxiliary lines against Local Distortion
Yudai Kawakami, Satoshi Ono, Hiroshi Kawasaki, Shigeru Nakayama (Kagoshima Univ.) PRMU2013-118 MVE2013-59
Abstract (in Japanese) (See Japanese page) 
(in English) General Two-Dimensional (2D) code decoders read 2D codes without any distortion or with uniform distortion, and it is hard for the decoders to read 2D codes involving partial, non-linear distortion. The authors have proposed a 2D code involving colored auxiliary lines for the correction of distortion and recognition of occlusion regions. However, the decoder sometimes fails to read modules around an occlusion boundary. Therefore, this paper attempts to improve a decode method for the 2D code involving the colored auxiliary lines. The improved decoder revises line recognition result by estimating reliability of line recognition and iterated dynamic programming matching. Experimental results show that the proposed method decodes the 2D code involving partial, nonlinear distortion with higher accuracy than the previous decoder.
Keyword (in Japanese) (See Japanese page) 
(in English) 2D Code / QR Code / DP Matching / de Bruijn Sequence / / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 402, PRMU2013-118, pp. 275-280, Jan. 2014.
Paper # PRMU2013-118 
Date of Issue 2014-01-16 (PRMU, MVE) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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 PRMU2013-118 MVE2013-59

Conference Information
Conference Date 2014-01-23 - 2014-01-24 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To PRMU 
Conference Code 2014-01-PRMU-CVIM-MVE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Improvement of a Decode method for Two-Dimensional Codes with Auxiliary lines against Local Distortion 
Sub Title (in English)  
Keyword(1) 2D Code  
Keyword(2) QR Code  
Keyword(3) DP Matching  
Keyword(4) de Bruijn Sequence  
1st Author's Name Yudai Kawakami  
1st Author's Affiliation Kagoshima University (Kagoshima Univ.)
2nd Author's Name Satoshi Ono  
2nd Author's Affiliation Kagoshima University (Kagoshima Univ.)
3rd Author's Name Hiroshi Kawasaki  
3rd Author's Affiliation Kagoshima University (Kagoshima Univ.)
4th Author's Name Shigeru Nakayama  
4th Author's Affiliation Kagoshima University (Kagoshima Univ.)
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Speaker Author-1 
Date Time 2014-01-24 15:30:00 
Presentation Time 30 minutes 
Registration for PRMU 
Paper # PRMU2013-118, MVE2013-59 
Volume (vol) vol.113 
Number (no) no.402(PRMU), no.403(MVE) 
Page pp.275-280 
Date of Issue 2014-01-16 (PRMU, MVE) 

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