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| Presentation | 2015-03-05 14:35 Gradient Norm-based Multiscale Histogram Equalization Yoshiaki Ueda (Yamaguchi Univ.), Takanori Koga (Tokuyama College of Technology), Noriaki Suetake, Eiji Uchino (Yamaguchi Univ.)  SIS2014-99 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In the contrast enhancement of the image, histogram equalization (HE) is used widely. After the HE processing, images have much contrast because an entropy of the intensity is maximized. However, the enhanced image becomes unnatural because plane parts of the image are over-enhanced. To cope with the problem, a gradient norm-based histogram equalization(GNHE) has been proposed in recent research. The GNHE has an advantage that the over-enhancement is suppressed in the plane parts. However, an overexposure and an underexposure are occured in the detail parts. In this report, we propose a contrast enhancement method which realizes the natural enhancement. Through the experiments using some images, the effectiveness of the proposed method is verified. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Histogram equalization / Local histogram equalization / Integral histogram / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 114, no. 496, SIS2014-99, pp. 45-50, March 2015. | |
| Paper # | SIS2014-99 | |
| Date of Issue | 2015-02-26 (SIS) | |
| 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) | |
| Download PDF | SIS2014-99 |
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| Conference Information | |
| Committee | SIS |
| Conference Date | 2015-03-05 - 2015-03-06 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Meiji Univ. Nakano Campus (Tokyo) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Soft Computing, etc. |
| Paper Information | |
| Registration To | SIS |
| Conference Code | 2015-03-SIS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Gradient Norm-based Multiscale Histogram Equalization |
| Sub Title (in English) | |
| Keyword(1) | Histogram equalization |
| Keyword(2) | Local histogram equalization |
| Keyword(3) | Integral histogram |
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| 1st Author's Name | Yoshiaki Ueda |
| 1st Author's Affiliation | Yamaguchi University (Yamaguchi Univ.) |
| 2nd Author's Name | Takanori Koga |
| 2nd Author's Affiliation | Tokuyama College of Technology (Tokuyama College of Technology) |
| 3rd Author's Name | Noriaki Suetake |
| 3rd Author's Affiliation | Yamaguchi University (Yamaguchi Univ.) |
| 4th Author's Name | Eiji Uchino |
| 4th Author's Affiliation | Yamaguchi University (Yamaguchi Univ.) |
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| Speaker | Author-1 |
| Date Time | 2015-03-05 14:35:00 |
| Presentation Time | 20 minutes |
| Registration for | SIS |
| Paper # | SIS2014-99 |
| Volume (vol) | vol.114 |
| Number (no) | no.496 |
| Page | pp.45-50 |
| #Pages | 6 |
| Date of Issue | 2015-02-26 (SIS) |
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