| Presentation | 2014-02-17 Relaxation of Restriction on HDR Image Formats for A Fixed-Point Tone Mapping Operation Atsushi TASHIRO, Tatsuya MUROFUSHI, Toshiyuki DOBASHI, Masahiro IWAHASHI, Hitoshi KIYA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes an integer tone mapping operation (TMO) with fixed-point arithmetic for high dynamic range (HDR) images expressed in floating-point data. A TMO generates a low dynamic range (LDR) image from HDR image by compressing its dynamic range. In general, it uses floating-point arithmetic because values of HDR images are expressed in floating-point data. For this, it requires huge computational costs, even though LDR images are expressed in integer data. The method with fixed-point arithmetic and integer processing in which a floating-point number is divided into the exponent and the mantissa was proposed. However, in the previous research, HDR image formats are restricted, so it is difficult to apply integer processing to HDR images having various formats. By using an intermediate format, the proposed TMO is available for any HDR images. The results show reducing the computational cost while maintaining the numerical accuracy. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | tone mapping / high dynamic range / fixed-point arithmetic / floating-point data |
| Paper # | ITS2013-34,IE2013-99 |
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| Conference Information | |
| Committee | IE |
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| Conference Date | 2014/2/10(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Image Engineering (IE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Relaxation of Restriction on HDR Image Formats for A Fixed-Point Tone Mapping Operation |
| Sub Title (in English) | |
| Keyword(1) | tone mapping |
| Keyword(2) | high dynamic range |
| Keyword(3) | fixed-point arithmetic |
| Keyword(4) | floating-point data |
| 1st Author's Name | Atsushi TASHIRO |
| 1st Author's Affiliation | Tokyo Metropolitan University() |
| 2nd Author's Name | Tatsuya MUROFUSHI |
| 2nd Author's Affiliation | Tokyo Metropolitan University |
| 3rd Author's Name | Toshiyuki DOBASHI |
| 3rd Author's Affiliation | Tokyo Metropolitan University |
| 4th Author's Name | Masahiro IWAHASHI |
| 4th Author's Affiliation | Nagaoka University of Technology |
| 5th Author's Name | Hitoshi KIYA |
| 5th Author's Affiliation | Tokyo Metropolitan University |
| Date | 2014-02-17 |
| Paper # | ITS2013-34,IE2013-99 |
| Volume (vol) | vol.113 |
| Number (no) | 434 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |