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Paper Abstract and Keywords
Presentation 2021-03-04 11:50
A Method of Curved Character String Correction of Folded Document Images
Takeru Doi, Hiroyuki Tsuji, Tomoaki Kimura (KAIT) SIS2020-43
Abstract (in Japanese) (See Japanese page) 
(in English) Various scanners and cameras are used to convert documents into data. And using a smartphone is the simplest method. However, Document images shot of the smartphone camera with the single lens are curved. This distortion is when the bound document is shot from above. Curved distortion occurs toward the bound side. In this paper, we propose a method to correct a curved character string when shooting images of the bound document. It is based on the method of character string inclination correction using corner detection. Then, we confirm that the recognition rate of the proposed method was 79.61% which was higher than the recognition rate of 31.07% of the uncorrected data.
Keyword (in Japanese) (See Japanese page) 
(in English) String correction / Digitalization of Documents / Least squares / Corner detection / Morphology / OCR / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 415, SIS2020-43, pp. 45-48, March 2021.
Paper # SIS2020-43 
Date of Issue 2021-02-25 (SIS) 
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)
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Conference Information
Committee SIS  
Conference Date 2021-03-04 - 2021-03-05 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Soft Computing, etc. 
Paper Information
Registration To SIS 
Conference Code 2021-03-SIS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Method of Curved Character String Correction of Folded Document Images 
Sub Title (in English)  
Keyword(1) String correction  
Keyword(2) Digitalization of Documents  
Keyword(3) Least squares  
Keyword(4) Corner detection  
Keyword(5) Morphology  
Keyword(6) OCR  
1st Author's Name Takeru Doi  
1st Author's Affiliation Kanagawa Institute of Technology (KAIT)
2nd Author's Name Hiroyuki Tsuji  
2nd Author's Affiliation Kanagawa Institute of Technology (KAIT)
3rd Author's Name Tomoaki Kimura  
3rd Author's Affiliation Kanagawa Institute of Technology (KAIT)
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Date Time 2021-03-04 11:50:00 
Presentation Time 20 
Registration for SIS 
Paper # IEICE-SIS2020-43 
Volume (vol) IEICE-120 
Number (no) no.415 
Page pp.45-48 
#Pages IEICE-4 
Date of Issue IEICE-SIS-2021-02-25 

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