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Paper Abstract and Keywords
Presentation 2008-05-30 10:00
Image super-resolution using dictionaries learnt by a shift-invariant sparse coding
Yoichi Nishino, Hidenari Nishiura, Makoto Nakashizuka, Youji Iiguni (Osaka Univ.) EA2008-18 SIP2008-27
Abstract (in Japanese) (See Japanese page) 
(in English) Super-resolution techniques have been proposed for image resolution enhancement(image zooming).In many super-resolution techniques, high frequency components of images that are lost in the sampling process are recovered by using prior knowledge of images.Example-based super
resolution techniques use the set of low and high resolution image pairs.
In those methods, huge number of examples are required for the processing.In this paper, we use the image bases that are learnt from the example high-resolution images as the prior knowledge.The learnt bases are obtained by the shift-invariant non-negative sparse coding.
In experiment, the learnt bases are applied to recover the high-
resolution text images.Moreover, the comparisons between the proposed method and the example-based super resolution methods are also
demonstrated.
Keyword (in Japanese) (See Japanese page) 
(in English) image super-resolution / sparse coding / example-based image processing / / / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 71, SIP2008-27, pp. 1-6, May 2008.
Paper # SIP2008-27 
Date of Issue 2008-05-23 (EA, SIP) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
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)
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Conference Information
Committee SIP EA  
Conference Date 2008-05-29 - 2008-05-30 
Place (in Japanese) (See Japanese page) 
Place (in English) Kansai Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SIP 
Conference Code 2008-05-SIP-EA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Image super-resolution using dictionaries learnt by a shift-invariant sparse coding 
Sub Title (in English)  
Keyword(1) image super-resolution  
Keyword(2) sparse coding  
Keyword(3) example-based image processing  
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1st Author's Name Yoichi Nishino  
1st Author's Affiliation Osaka University (Osaka Univ.)
2nd Author's Name Hidenari Nishiura  
2nd Author's Affiliation Osaka University (Osaka Univ.)
3rd Author's Name Makoto Nakashizuka  
3rd Author's Affiliation Osaka University (Osaka Univ.)
4th Author's Name Youji Iiguni  
4th Author's Affiliation Osaka University (Osaka Univ.)
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Speaker Author-1 
Date Time 2008-05-30 10:00:00 
Presentation Time 25 minutes 
Registration for SIP 
Paper # EA2008-18, SIP2008-27 
Volume (vol) vol.108 
Number (no) no.69(EA), no.71(SIP) 
Page pp.1-6 
#Pages
Date of Issue 2008-05-23 (EA, SIP) 


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