| Paper Abstract and Keywords |
| Presentation |
2013-12-10 09:10
A Fixed-Point Tone Mapping Operation for HDR Images and Its Evaluation of Memory Usage
Toshiyuki Dobashi, Tatsuya Murofushi (Tokyo Metro. Univ.), Masahiro Iwahashi (Nagaoka Univ. of Tech.), Hitoshi Kiya (Tokyo Metro. Univ.) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
This paper proposes a tone mapping operation (TMO) with a low memory cost and a low computational cost.
A TMO generates a low dynamic range (LDR) image from a high dynamic range (HDR) image by compressing its dynamic range.
Due to an HDR image is generally expressed in floating-point data, a TMO is also executed with floating-point arithmetic.
The proposed method treats a floating-point number as two 8-bit integer numbers which correspond to a exponent part and a mantissa part, and applies tone mapping to these integer numbers separately.
Moreover, the method conducts calculations in the tone mapping with fixed-point arithmetic.
As a result, the method reduces a memory cost and a computational cost.
The experimental and evaluation results show that the method has high accuracy of a TMO, though reducing memory and computational cost. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Tone mapping / High dynamic range / fixed-point / Low-memory / / / / |
| Reference Info. |
ITE Tech. Rep., vol. 37, no. 56, ME2013-129, pp. 41-44, Dec. 2013. |
| Paper # |
ME2013-129 |
| Date of Issue |
2013-12-02 (ME) |
| ISSN |
Print edition: ISSN 1342-6893 |
| Download PDF |
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| Conference Information |
| Committee |
ME |
| Conference Date |
2013-12-09 - 2013-12-10 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Matuyasensen |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
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| Paper Information |
| Registration To |
ME |
| Conference Code |
2013-12-ME |
| 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 and Its Evaluation of Memory Usage |
| Sub Title (in English) |
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| Keyword(1) |
Tone mapping |
| Keyword(2) |
High dynamic range |
| Keyword(3) |
fixed-point |
| Keyword(4) |
Low-memory |
| Keyword(5) |
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| Keyword(6) |
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| 1st Author's Name |
Toshiyuki Dobashi |
| 1st Author's Affiliation |
Tokyo Metropolitan University (Tokyo Metro. Univ.) |
| 2nd Author's Name |
Tatsuya Murofushi |
| 2nd Author's Affiliation |
Tokyo Metropolitan University (Tokyo Metro. 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 Metro. Univ.) |
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| Speaker |
Author-1 |
| Date Time |
2013-12-10 09:10:00 |
| Presentation Time |
25 minutes |
| Registration for |
ME |
| Paper # |
ME2013-129 |
| Volume (vol) |
vol.37 |
| Number (no) |
no.56 |
| Page |
pp.41-44 |
| #Pages |
4 |
| Date of Issue |
2013-12-02 (ME) |