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Paper Abstract and Keywords
Presentation 2022-03-03 13:50
A Proposal of Night Vision Algorithm on Equ-Hue Plane in RGB Color Space
Mashiho Mukaida (Yamaguchi Univ.), Yoshiaki Ueda (Fukuoka Univ.), Eiji Uchino, Noriaki Suetake (Yamaguchi Univ.) SIS2021-34
Abstract (in Japanese) (See Japanese page) 
(in English) Images taken under low-light conditions such as at night or in a dark rooms are dark and have low visibility. Recently, many low-light image enhancement algorithms (night vision algorithms) have been proposed. However, the conventional methods have some problems such as causing over enhancement in bright regions and/or high computational cost. In this report, we propose a new low-light image enhancement method preserving the hue information in RGB color space. In the proposed method, the input pixels are represented by a convex combination of white, black, and pure color. Then, a modified gamma transform is applied to the combination coefficients in order to brighten only dark pixels. The histogram of black coefficients is smoothed by a gamma filter to improve the contrast of the image. The proposed method can improve the visibility of the image overall. In experiments, the effectiveness of the proposed method is verified by comparing with the state-of-the-art methods through qualitative and quantitative evaluations.
Keyword (in Japanese) (See Japanese page) 
(in English) Image enhancement / Night vision algorithm / Equ-hue plane / / / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 398, SIS2021-34, pp. 20-25, March 2022.
Paper # SIS2021-34 
Date of Issue 2022-02-24 (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 SIS2021-34

Conference Information
Committee SIS  
Conference Date 2022-03-03 - 2022-03-04 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Soft Computing, etc. 
Paper Information
Registration To SIS 
Conference Code 2022-03-SIS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Proposal of Night Vision Algorithm on Equ-Hue Plane in RGB Color Space 
Sub Title (in English)  
Keyword(1) Image enhancement  
Keyword(2) Night vision algorithm  
Keyword(3) Equ-hue plane  
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1st Author's Name Mashiho Mukaida  
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 Eiji Uchino  
3rd Author's Affiliation Yamaguchi University (Yamaguchi Univ.)
4th Author's Name Noriaki Suetake  
4th Author's Affiliation Yamaguchi University (Yamaguchi Univ.)
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Speaker Author-1 
Date Time 2022-03-03 13:50:00 
Presentation Time 20 minutes 
Registration for SIS 
Paper # SIS2021-34 
Volume (vol) vol.121 
Number (no) no.398 
Page pp.20-25 
#Pages 6 
Date of Issue 2022-02-24 (SIS) 

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