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Paper Abstract and Keywords
Presentation 2013-02-18 13:40
AN INTEGER OPERATION OF GLOBAL TONE MAPPING FOR HDR IMAGES
Tatsuya Murofushi (Tokyo Metropolitan Univ.), Masahiro Iwahashi (Nagaoka Univ. of Tech.), Hitoshi Kiya (Tokyo Metropolitan Univ.) ITS2012-38 IE2012-118
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes a new tone mapping operation which is implemented in integer input and integer output.
A tone mapping operation (TMO) generates a low dynamic range (LDR) image from a high dynamic range (HDR) image.
Since pixel values of an HDR image are generally expressed in a floating point data format, e.g. RGBE, OpenEXR, a TMO is also implemented in floating point calculations in conventional approaches.
However, it requires huge memory cost, even though a resulting LDR image is expressed in simple integer.
We treat a floating-point number as two integer, one corresponds to the exponent part, the other corresponds to the mantissa part.
Our method performs a TMO with integer input and integer output to reduce memory cost.
In our experiment, it is confirmed with PSNR and contrast evaluations that the proposed method offers LDR images of visually high quality comparable to the conventional method.
Keyword (in Japanese) (See Japanese page) 
(in English) high dynamic range / tone mapping / integer operation / floating-point / / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 434, IE2012-118, pp. 221-226, Feb. 2013.
Paper # IE2012-118 
Date of Issue 2013-02-11 (ITS, IE) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
Copyright
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reproduction
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 ITS2012-38 IE2012-118

Conference Information
Committee ITS IE ITE-AIT ITE-HI ITE-ME  
Conference Date 2013-02-18 - 2013-02-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) ITS Image Processsing, Image Medium, Vision, etc. 
Paper Information
Registration To IE 
Conference Code 2013-02-ITS-IE-AIT-HI-ME 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) AN INTEGER OPERATION OF GLOBAL TONE MAPPING FOR HDR IMAGES 
Sub Title (in English)  
Keyword(1) high dynamic range  
Keyword(2) tone mapping  
Keyword(3) integer operation  
Keyword(4) floating-point  
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1st Author's Name Tatsuya Murofushi  
1st Author's Affiliation Tokyo Metropolitan University (Tokyo Metropolitan Univ.)
2nd Author's Name Masahiro Iwahashi  
2nd Author's Affiliation Nagaoka University of Technology (Nagaoka Univ. of Tech.)
3rd Author's Name Hitoshi Kiya  
3rd Author's Affiliation Tokyo Metropolitan University (Tokyo Metropolitan Univ.)
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Speaker
Date Time 2013-02-18 13:40:00 
Presentation Time 20 
Registration for IE 
Paper # IEICE-ITS2012-38,IEICE-IE2012-118 
Volume (vol) IEICE-112 
Number (no) no.433(ITS), no.434(IE) 
Page pp.221-226 
#Pages IEICE-6 
Date of Issue IEICE-ITS-2013-02-11,IEICE-IE-2013-02-11 


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