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Paper Abstract and Keywords
Presentation 2019-06-13 14:45
A Proposal of Improvement Method of Local Color Correction
Seiichi Kojima (Yamaguchi Univ.), Yoshiaki Ueda (Fukuoka Univ.), Noriaki Suetake, Eiji Uchino (Yamaguchi Univ.) SIS2019-7
Abstract (in Japanese) (See Japanese page) 
(in English) It is difficult to take good pictures, when the scene has both of bright and dark regions. The visibility of the picture will be low, because dark regions are underexposure and bright regions are overexposure. N.Moroney proposed Local Color Correction(LCC) to improve the quality of such an image. LCC is a simple and effective method. However, it has some problems. Firstly, the scope of appropriate parameters for adjusting brightness is narrow. Secondly, although appropriate parameters of Gaussian filter are different for detail regions and other regions, only one parameter is adopted for entire image. Thirdly, LCC causes halo artifact. In this report, we propose an improvement method of LCC. In the proposed method, the intensity transform function is changed, different parameters are adopted for detail regions and other regions respectively and cross bilateral filter is used to prevent halo artifact.
Keyword (in Japanese) (See Japanese page) 
(in English) image enhancement / gamma correction / smoothing / cross bilateral filter / / / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 78, SIS2019-7, pp. 35-40, June 2019.
Paper # SIS2019-7 
Date of Issue 2019-06-06 (SIS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 SIS2019-7

Conference Information
Conference Date 2019-06-13 - 2019-06-14 
Place (in Japanese) (See Japanese page) 
Place (in English) Fukue Culture Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Intelligent Multimedia Systems, Applied Enbedded Systems, Three-Dimensional Image Technology (3DIT), etc. 
Paper Information
Registration To SIS 
Conference Code 2019-06-SIS-AVM-3DIT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Proposal of Improvement Method of Local Color Correction 
Sub Title (in English)  
Keyword(1) image enhancement  
Keyword(2) gamma correction  
Keyword(3) smoothing  
Keyword(4) cross bilateral filter  
1st Author's Name Seiichi Kojima  
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 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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Date Time 2019-06-13 14:45:00 
Presentation Time 20 
Registration for SIS 
Paper # IEICE-SIS2019-7 
Volume (vol) IEICE-119 
Number (no) no.78 
Page pp.35-40 
#Pages IEICE-6 
Date of Issue IEICE-SIS-2019-06-06 

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