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Paper Abstract and Keywords
Presentation 2011-11-18 13:50
An approach to control halo suppression for local adaptive tone mapping
Sousuke Shimoayama, Masayuki Ikebe, Masaki Igarashi, Akira Mizuno, Junichi Motohisa (Hokudai)
Abstract (in Japanese) (See Japanese page) 
(in English) Local Histogram Equalization (LHE), which is efficient for High Dynamic Range (HDR) compression, requires a large amount of calculation and induces unnatural image quality. Using checker-wise histogram acquisition and line buffer, memory accessing for local histograms is processed in O(1) time. For improving image quality, we proposed approximation of LHE by compositing gamma functions. Moreover the weighting of local histogram is developed by introducing mean values of bins for the suppression and control of halo effect. We set the range of parameters for controlling halo effect by sensitivity evaluation.
Keyword (in Japanese) (See Japanese page) 
(in English) High Dynamic Range Compression / Local Histogram Equalization (LHE) / Gamma Correction / Halo effect / / / /  
Reference Info. ITE Tech. Rep., vol. 35, no. 47, IST2011-70, pp. 9-12, Nov. 2011.
Paper # IST2011-70 
Date of Issue 2011-11-11 (IST) 
ISSN Print edition: ISSN 1342-6893
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Conference Information
Committee IST  
Conference Date 2011-11-18 - 2011-11-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) 2011 International Image Sensor Workshop (IISW), etc 
Paper Information
Registration To IST 
Conference Code 2011-11-IST 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) An approach to control halo suppression for local adaptive tone mapping 
Sub Title (in English)  
Keyword(1) High Dynamic Range Compression  
Keyword(2) Local Histogram Equalization (LHE)  
Keyword(3) Gamma Correction  
Keyword(4) Halo effect  
1st Author's Name Sousuke Shimoayama  
1st Author's Affiliation Hokkaido University (Hokudai)
2nd Author's Name Masayuki Ikebe  
2nd Author's Affiliation Hokkaido University (Hokudai)
3rd Author's Name Masaki Igarashi  
3rd Author's Affiliation Hokkaido University (Hokudai)
4th Author's Name Akira Mizuno  
4th Author's Affiliation Hokkaido University (Hokudai)
5th Author's Name Junichi Motohisa  
5th Author's Affiliation Hokkaido University (Hokudai)
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Speaker Author-1 
Date Time 2011-11-18 13:50:00 
Presentation Time 25 minutes 
Registration for IST 
Paper # IST2011-70 
Volume (vol) vol.35 
Number (no) no.47 
Page pp.9-12 
Date of Issue 2011-11-11 (IST) 

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