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Paper Abstract and Keywords
Presentation 2020-07-01 14:30
Adaptive exposure-time control based on image entropy for multiple-exposure-time image sensor
Kurumi Kataoka, Yusuke Kameda, Takayuki Hamamoto (TUS)
Abstract (in Japanese) (See Japanese page) 
(in English) We propose an adaptive exposure time control method for image sensors that can control exposure time for each pixel in order to reconstruct an HDR image while suppressing blown-out highlights and blocked-up shadows according to the brightness and contrast of the scene. First, the proposed method finds the exposure time that maximizes the entropy of the entire image because an image with high entropy contains more details of the subjects. In order to estimate the exposure time suitable for the light and dark areas in the scene, the proposed method divides the image into blocks and estimates the exposure time that maximizes entropy for each block. Simulation experiments show the effectiveness of the proposed method.
Keyword (in Japanese) (See Japanese page) 
(in English) Multiple exposure time imaging / Exposure time control / Image entropy / / / / /  
Reference Info. ITE Tech. Rep., vol. 44, no. 14, IST2020-36, pp. 13-18, July 2020.
Paper # IST2020-36 
Date of Issue 2020-06-24 (IST) 
ISSN Print edition: ISSN 1342-6893    Online edition: ISSN 2424-1970
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Conference Information
Committee IST  
Conference Date 2020-07-01 - 2020-07-01 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
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Paper Information
Registration To IST 
Conference Code 2020-07-IST 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Adaptive exposure-time control based on image entropy for multiple-exposure-time image sensor 
Sub Title (in English)  
Keyword(1) Multiple exposure time imaging  
Keyword(2) Exposure time control  
Keyword(3) Image entropy  
1st Author's Name Kurumi Kataoka  
1st Author's Affiliation Tokyo University of Science (TUS)
2nd Author's Name Yusuke Kameda  
2nd Author's Affiliation Tokyo University of Science (TUS)
3rd Author's Name Takayuki Hamamoto  
3rd Author's Affiliation Tokyo University of Science (TUS)
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Speaker Author-1 
Date Time 2020-07-01 14:30:00 
Presentation Time 30 minutes 
Registration for IST 
Paper # IST2020-36 
Volume (vol) vol.44 
Number (no) no.14 
Page pp.13-18 
Date of Issue 2020-06-24 (IST) 

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