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Paper Abstract and Keywords
Presentation 2018-08-09 15:50
Night Low-Light Image Enhancement Using Variational Retinex Model and Activation Map
Kazuki Kurihara, Hiromi Yoshida, Yoji Iiguni (Osaka Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) The illumination enhancement is important for the computer vision applications using outdoor. Although many studies have been reported to solve this problem, they contain various problems. Therefore, we used a method combining variational retinex model and bright channel prior to suppress contrast over-emphasis and noise. We also reduced the computational cost by using FFT as a method to solve the quadratic optimization problem. Furthermore, in order to suppress blur artifacts, we used activation map changed to a form applicable to night images. In our experiments, we confirmed the effectiveness of our method, and improvement of detection accuracy by object detection algorithm.
Keyword (in Japanese) (See Japanese page) 
(in English) illumination enhancement / variational retinex model / bright channel prior / activation map / / / /  
Reference Info. ITE Tech. Rep., vol. 42, pp. 21-24, Aug. 2018.
Paper #  
Date of Issue 2018-08-02 (AIT) 
ISSN Print edition: ISSN 1342-6893    Online edition: ISSN 2424-1970
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Conference Information
Committee IIEEJ AIT  
Conference Date 2018-08-09 - 2018-08-10 
Place (in Japanese) (See Japanese page) 
Place (in English) Shinshu Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To IIEEJ 
Conference Code 2018-08-IIEEJ-AIT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Night Low-Light Image Enhancement Using Variational Retinex Model and Activation Map 
Sub Title (in English)  
Keyword(1) illumination enhancement  
Keyword(2) variational retinex model  
Keyword(3) bright channel prior  
Keyword(4) activation map  
1st Author's Name Kazuki Kurihara  
1st Author's Affiliation Osaka University (Osaka Univ.)
2nd Author's Name Hiromi Yoshida  
2nd Author's Affiliation Osaka University (Osaka Univ.)
3rd Author's Name Yoji Iiguni  
3rd Author's Affiliation Osaka University (Osaka Univ.)
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Speaker Author-1 
Date Time 2018-08-09 15:50:00 
Presentation Time 25 minutes 
Registration for IIEEJ 
Paper # AIT2018-159 
Volume (vol) vol.42 
Number (no) no.26 
Page pp.21-24 
Date of Issue 2018-08-02 (AIT) 

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