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Paper Abstract and Keywords
Presentation 2013-07-11 10:40
An Integerization of Tone Mapping for HDR Images in OpenEXR
Tatsuya Murofushi, Toshiyuki Dobashi (Tokyo Metro. Univ.), Masahiro Iwahashi (Nagaoka Univ. of Tech.), Hitoshi Kiya (Tokyo Metro. Univ.) CAS2013-6 VLD2013-16 SIP2013-36 MSS2013-6
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes a new tone mapping operation with integer input and integer output.
High dynamic range (HDR) images cannot be displayed with conventional display devices directly.
Therefore, a tone mapping operation (TMO) is necessary to generate a low dynamic range (LDR) image.
Since pixel values of an HDR image are generally expressed in a floating point data format, a TMO is also implemented in floating point calculations.
However, it requires huge memory space and computational cost.
We treat a floating point number as two integers corresponding to the exponent part and the mantissa part.
These two integers are utilized as the input-output of a TMO.
As a result, Our method can reduce the memory space required for a TMO.
Keyword (in Japanese) (See Japanese page) 
(in English) high dynamic range / tone mapping / integerization / OpenEXR / / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 120, SIP2013-36, pp. 31-36, July 2013.
Paper # SIP2013-36 
Date of Issue 2013-07-04 (CAS, VLD, SIP, MSS) 
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 CAS2013-6 VLD2013-16 SIP2013-36 MSS2013-6

Conference Information
Committee SIP CAS MSS VLD  
Conference Date 2013-07-11 - 2013-07-12 
Place (in Japanese) (See Japanese page) 
Place (in English) Kumamoto Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) System, signal processing and related topics 
Paper Information
Registration To SIP 
Conference Code 2013-07-SIP-CAS-MSS-VLD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) An Integerization of Tone Mapping for HDR Images in OpenEXR 
Sub Title (in English)  
Keyword(1) high dynamic range  
Keyword(2) tone mapping  
Keyword(3) integerization  
Keyword(4) OpenEXR  
1st Author's Name Tatsuya Murofushi  
1st Author's Affiliation Tokyo Metropolitan University (Tokyo Metro. Univ.)
2nd Author's Name Toshiyuki Dobashi  
2nd Author's Affiliation Tokyo Metropolitan University (Tokyo Metro. Univ.)
3rd Author's Name Masahiro Iwahashi  
3rd Author's Affiliation Nagaoka University of Techinology (Nagaoka Univ. of Tech.)
4th Author's Name Hitoshi Kiya  
4th Author's Affiliation Tokyo Metropolitan University (Tokyo Metro. Univ.)
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Speaker Author-1 
Date Time 2013-07-11 10:40:00 
Presentation Time 20 minutes 
Registration for SIP 
Paper # CAS2013-6, VLD2013-16, SIP2013-36, MSS2013-6 
Volume (vol) vol.113 
Number (no) no.118(CAS), no.119(VLD), no.120(SIP), no.121(MSS) 
Page pp.31-36 
Date of Issue 2013-07-04 (CAS, VLD, SIP, MSS) 

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