| Paper Abstract and Keywords |
| Presentation |
2013-02-18 13:40
AN INTEGER OPERATION OF GLOBAL TONE MAPPING FOR HDR IMAGES
Tatsuya Murohushi (TMU), Masahiro Iwahashi (NUT), Hitoshi Kiya (TMU) |
| 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. |
ITE Tech. Rep. |
| Paper # |
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| Download PDF |
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| Conference Information |
| Committee |
IEICE-ITS IEICE-IE AIT HI 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 |
IEICE-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) |
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| Keyword(1) |
high dynamic range |
| Keyword(2) |
tone mapping |
| Keyword(3) |
integer operation |
| Keyword(4) |
floating-point |
| Keyword(5) |
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| Keyword(6) |
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| 1st Author's Name |
Tatsuya Murohushi |
| 1st Author's Affiliation |
Tokyo Metropolitan University (TMU) |
| 2nd Author's Name |
Masahiro Iwahashi |
| 2nd Author's Affiliation |
Nagaoka University of Technology (NUT) |
| 3rd Author's Name |
Hitoshi Kiya |
| 3rd Author's Affiliation |
Tokyo Metropolitan University (TMU) |
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| Speaker |
Author-1 |
| Date Time |
2013-02-18 13:40:00 |
| Presentation Time |
20 minutes |
| Registration for |
IEICE-IE |
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| Volume (vol) |
vol.37 |
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