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Paper Abstract and Keywords
Presentation 2010-02-18 11:00
Quality Analysis of Handwriting Recovery from Pen-Tip Camera Images
Shuji Tajima, Seiichi Uchida (Kyushu Univ.), Masakazu Iwamura (Osaka Prefecture Univ.), Shinichiro Omachi (Touhoku Univ.), Koichi Kise (Osaka Prefecture Univ.) PRMU2009-208
Abstract (in Japanese) (See Japanese page) 
(in English) Quality of a camera-based handwriting pattern acquisition system is analyzed.
The system assumes that the camera is mounted around the pen-tip and acquires
a frame sequence, where the fine structure of the paper surface,
called paper fingerprint, is captured. SURF keypoints extracted from paper
fingerprint are used for establishing the correspondence between two
consecutive images. By repeating this process for every pairs of consecutive
frames, we can obtain a mosaic image which shows the entire image of the
reconstructed handwriting pattern. In this paper, we analyze the causes which
degrades the quality of the reconstructed handwriting pattern.
Keyword (in Japanese) (See Japanese page) 
(in English) handwriting / SURF / RANSAC / paper fingerprint / / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 418, PRMU2009-208, pp. 7-12, Feb. 2010.
Paper # PRMU2009-208 
Date of Issue 2010-02-11 (PRMU) 
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 PRMU2009-208

Conference Information
Committee PRMU  
Conference Date 2010-02-18 - 2010-02-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokyo Univ. of Agriculture and Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To PRMU 
Conference Code 2010-02-PRMU 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Quality Analysis of Handwriting Recovery from Pen-Tip Camera Images 
Sub Title (in English)  
Keyword(1) handwriting  
Keyword(2) SURF  
Keyword(3) RANSAC  
Keyword(4) paper fingerprint  
1st Author's Name Shuji Tajima  
1st Author's Affiliation Kyushu University (Kyushu Univ.)
2nd Author's Name Seiichi Uchida  
2nd Author's Affiliation Kyushu University (Kyushu Univ.)
3rd Author's Name Masakazu Iwamura  
3rd Author's Affiliation Osaka Prefecture University (Osaka Prefecture Univ.)
4th Author's Name Shinichiro Omachi  
4th Author's Affiliation Touhoku University (Touhoku Univ.)
5th Author's Name Koichi Kise  
5th Author's Affiliation Osaka Prefecture University (Osaka Prefecture Univ.)
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Date Time 2010-02-18 11:00:00 
Presentation Time 30 
Registration for PRMU 
Paper # IEICE-PRMU2009-208 
Volume (vol) IEICE-109 
Number (no) no.418 
Page pp.7-12 
#Pages IEICE-6 
Date of Issue IEICE-PRMU-2010-02-11 

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