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| Presentation | 2013-07-11 11:00 A Fixed-Point Tone Mapping Operation for HDR Images Expressd in Floating-Point Data Toshiyuki Dobashi, Tatsuya Murofushi (Tokyo Metropolitan Univ.), Masahiro Iwahashi (Nagaoka Univ. of Tech.), Hitoshi Kiya (Tokyo Metropolitan Univ.)  CAS2013-7 VLD2013-17 SIP2013-37 MSS2013-7 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This paper proposes a tone mapping operation (TMO) with fixed-point arithmetic for high dynamic range (HDR) images expressed in RGBE format. A TMO generates a low dynamic range (LDR) image from a HDR image by compressing its dynamic range. In general, it uses floating-point arithmetic because HDR images are floating-point data. Because of this, it requires huge computational cost even though a resultant LDR image is a integer data. The proposed method treats a floating-point number as two integer numbers which correspond to a exponent part and a mantissa part. Moreover, by branching and approximation of some calculations, the method can perform all calculation of a TMO with only fixed-point arithmetic. Experimental results shows the PSNR of LDR images in the proposed method are comparable to those of the conventional methods. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | tone mapping / high dynamic range / floating-point / fixed-point / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 113, no. 120, SIP2013-37, pp. 37-41, July 2013. | |
| Paper # | SIP2013-37 | |
| Date of Issue | 2013-07-04 (CAS, VLD, SIP, MSS) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and 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 | CAS2013-7 VLD2013-17 SIP2013-37 MSS2013-7 |
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| 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) | A Fixed-Point Tone Mapping Operation for HDR Images Expressd in Floating-Point Data |
| Sub Title (in English) | |
| Keyword(1) | tone mapping |
| Keyword(2) | high dynamic range |
| Keyword(3) | floating-point |
| Keyword(4) | fixed-point |
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| 1st Author's Name | Toshiyuki Dobashi |
| 1st Author's Affiliation | Tokyo Metropolitan University (Tokyo Metropolitan Univ.) |
| 2nd Author's Name | Tatsuya Murofushi |
| 2nd Author's Affiliation | Tokyo Metropolitan University (Tokyo Metropolitan Univ.) |
| 3rd Author's Name | Masahiro Iwahashi |
| 3rd Author's Affiliation | Nagaoka University of Technology (Nagaoka Univ. of Tech.) |
| 4th Author's Name | Hitoshi Kiya |
| 4th Author's Affiliation | Tokyo Metropolitan University (Tokyo Metropolitan Univ.) |
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| Speaker | Author-1 |
| Date Time | 2013-07-11 11:00:00 |
| Presentation Time | 20 minutes |
| Registration for | SIP |
| Paper # | CAS2013-7, VLD2013-17, SIP2013-37, MSS2013-7 |
| Volume (vol) | vol.113 |
| Number (no) | no.118(CAS), no.119(VLD), no.120(SIP), no.121(MSS) |
| Page | pp.37-41 |
| #Pages | 5 |
| Date of Issue | 2013-07-04 (CAS, VLD, SIP, MSS) |
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