Presentation | 2013-07-11 A Fixed-Point Tone Mapping Operation for HDR Images Expressd in Floating-Point Data Toshiyuki DOBASHI, Tatsuya MUROFUSHI, Masahiro IWAHASHI, Hitoshi KIYA, |
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Abstract(in Japanese) | (See Japanese page) |
Abstract(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. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | tone mapping / high dynamic range / fixed-point / floating-point |
Paper # | CAS2013-7,VLD2013-17,SIP2013-37,MSS2013-7 |
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Committee | MSS |
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Conference Date | 2013/7/4(1days) |
Place (in Japanese) | (See Japanese page) |
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Topics (in Japanese) | (See Japanese page) |
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Paper Information | |
Registration To | Mathematical Systems Science and its applications(MSS) |
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Language | JPN |
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) | fixed-point |
Keyword(4) | floating-point |
1st Author's Name | Toshiyuki DOBASHI |
1st Author's Affiliation | Tokyo Metropolitan University() |
2nd Author's Name | Tatsuya MUROFUSHI |
2nd Author's Affiliation | Tokyo Metropolitan University |
3rd Author's Name | Masahiro IWAHASHI |
3rd Author's Affiliation | Nagaoka University of Technology |
4th Author's Name | Hitoshi KIYA |
4th Author's Affiliation | Tokyo Metropolitan University |
Date | 2013-07-11 |
Paper # | CAS2013-7,VLD2013-17,SIP2013-37,MSS2013-7 |
Volume (vol) | vol.113 |
Number (no) | 121 |
Page | pp.pp.- |
#Pages | 5 |
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