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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EA2008-18 SIP2008-27 |
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) |
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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 |
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image super-resolution |
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sparse coding |
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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 |
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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 |
6 |
Date of Issue |
2008-05-23 (EA, SIP) |
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