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| Presentation | 2020-10-01 10:30 A Proposal of Backlit Image Enhancement Method Improving Visibility of Dark Regions Masato Akai (Yamaguchi Univ.), Yoshiaki Ueda (Fukuoka Univ.), Takanori Koga (Kindai Univ.), Noriaki Suetake (Yamaguchi Univ.)  SIS2020-11 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | A backlit image often includes both of bright regions and extremely dark regions. The visibility of the dark regions in such image tends to be low. General methods for image enhancement can't sufficiently enhance the quality of such image. In this report, we propose a backlit image enhancement method which improves the visibility of dark regions. In the proposed method, gamma correction and histogram equalization are used to make brightness adjusted image and contrast enhanced image, respectively. Then, the alpha blending of the brightness adjusted image and contrast enhanced image is obtained. After that, an output image is obtained by fusion of the original image and the resultant image of alpha blending to avoid causing artifact in bright regions. The weight for fusion is calculated by using binarization method and guided filter. Through experiments, we verify the effectiveness of the proposed method. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Backlit image / image enhancement / weight map / alpha blending / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 120, no. 176, SIS2020-11, pp. 5-10, Oct. 2020. | |
| Paper # | SIS2020-11 | |
| Date of Issue | 2020-09-24 (SIS) | |
| ISSN | 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 | SIS2020-11 |
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| Conference Information | |
| Committee | SIS ITE-BCT |
| Conference Date | 2020-10-01 - 2020-10-02 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | System Implementation Technology, Short Range Wireless Systems, Smart Multimedia Systems, Broadcasting Technology, etc. |
| Paper Information | |
| Registration To | SIS |
| Conference Code | 2020-10-SIS-BCT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Proposal of Backlit Image Enhancement Method Improving Visibility of Dark Regions |
| Sub Title (in English) | |
| Keyword(1) | Backlit image |
| Keyword(2) | image enhancement |
| Keyword(3) | weight map |
| Keyword(4) | alpha blending |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Masato Akai |
| 1st Author's Affiliation | Yamaguchi University (Yamaguchi Univ.) |
| 2nd Author's Name | Yoshiaki Ueda |
| 2nd Author's Affiliation | Fukuoka University (Fukuoka Univ.) |
| 3rd Author's Name | Takanori Koga |
| 3rd Author's Affiliation | Kindai University (Kindai Univ.) |
| 4th Author's Name | Noriaki Suetake |
| 4th Author's Affiliation | Yamaguchi University (Yamaguchi Univ.) |
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| Speaker | Author-1 |
| Date Time | 2020-10-01 10:30:00 |
| Presentation Time | 20 minutes |
| Registration for | SIS |
| Paper # | SIS2020-11 |
| Volume (vol) | vol.120 |
| Number (no) | no.176 |
| Page | pp.5-10 |
| #Pages | 6 |
| Date of Issue | 2020-09-24 (SIS) |
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