Paper Abstract and Keywords |
Presentation |
2015-03-03 09:00
[Poster Presentation]
Image Interpolation based on Weighting Function of Gaussian Takuro Yamaguchi, Yasuhiro Nakajima, Masaaki Ikehara (Keio Univ.) EA2014-105 SIP2014-146 SP2014-168 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
In this paper, we propose a new image interpolation method based on a 2-D piecewise stationary autoregressive (PAR) model. Soft-decision adaptive interpolation (SAI) and its improved methods which are based on PAR model are state-of-the-art methods in image interpolation. They produce upconverted images with good quality but tend to have high calculation cost because of solving the inverse matrix problem to estimate the weighting parameters. So we use Gaussian function to estimate parameters without the inverse matrix calculation and reduce the calculation cost. Moreover, parameters are estimated on pixel by pixel, while in SAI they are constant in a local window. Thanks to these, the proposed method outperforms SAI in the quality of upconversion with low calculation cost. Finally we validate the proposed method through some experimental results. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
image interpolation / Gaussian / PAR model / image modeling / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 114, no. 474, SIP2014-146, pp. 181-185, March 2015. |
Paper # |
SIP2014-146 |
Date of Issue |
2015-02-23 (EA, SIP, SP) |
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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EA2014-105 SIP2014-146 SP2014-168 |
Conference Information |
Committee |
SIP EA SP |
Conference Date |
2015-03-02 - 2015-03-03 |
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(See Japanese page) |
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Paper Information |
Registration To |
SIP |
Conference Code |
2015-03-SIP-EA-SP |
Language |
English (Japanese title is available) |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Image Interpolation based on Weighting Function of Gaussian |
Sub Title (in English) |
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Keyword(1) |
image interpolation |
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Gaussian |
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PAR model |
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image modeling |
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1st Author's Name |
Takuro Yamaguchi |
1st Author's Affiliation |
Keio University (Keio Univ.) |
2nd Author's Name |
Yasuhiro Nakajima |
2nd Author's Affiliation |
Keio University (Keio Univ.) |
3rd Author's Name |
Masaaki Ikehara |
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Keio University (Keio Univ.) |
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Speaker |
Author-1 |
Date Time |
2015-03-03 09:00:00 |
Presentation Time |
90 minutes |
Registration for |
SIP |
Paper # |
EA2014-105, SIP2014-146, SP2014-168 |
Volume (vol) |
vol.114 |
Number (no) |
no.473(EA), no.474(SIP), no.475(SP) |
Page |
pp.181-185 |
#Pages |
5 |
Date of Issue |
2015-02-23 (EA, SIP, SP) |
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