| Presentation | 2022-12-06 A Proposal of Backlit Image Enhancement Method Suppressing Change of Lightness Order Masato Akai, Yoshiaki Ueda, Takanori Koga, Noriaki Suetake, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Bright and dark regions in a backlit image decrease its visibility. Conventional image enhancement methods tend to cause artifacts and saturated color in the backlit image. Such problems are largely related to the change of lightness order. In this report, we propose a backlit image enhancement method which suppresses the change of lightness order. In the proposed method, two lightness images enhanced dark and bright area are fused based on a weight map to generate a output lightness image. The weight map is calculated by Otsu’s method and modified guided filter to suppress the change of lightness order due to image fusion. In the experiment, the effectiveness of the proposed method is verified by comparing with conventional image enhancement methods. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | backlit image / image enhancement / lightness order / weight map |
| Paper # | SIS2022-35 |
| Date of Issue | 2022-11-28 (SIS) |
| Conference Information | |
| Committee | SIS |
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| Conference Date | 2022/12/5(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Tomoaki Kimura(Kanagawa Inst. of Tech.) |
| Vice Chair | Naoto Sasaoka(Tottori Univ.) / Hakaru Tamukoh(Kyushu Inst. of Tech.) |
| Secretary | Naoto Sasaoka(NTT) / Hakaru Tamukoh(Kansai Univ.) |
| Assistant | Yoshiaki Makabe(Kanagawa Inst. of Tech.) / Yosuke Sugiura(Saitama Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Smart Info-Media Systems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Proposal of Backlit Image Enhancement Method Suppressing Change of Lightness Order |
| Sub Title (in English) | |
| Keyword(1) | backlit image |
| Keyword(2) | image enhancement |
| Keyword(3) | lightness order |
| Keyword(4) | weight map |
| 1st Author's Name | Masato Akai |
| 1st Author's Affiliation | Yamaguchi University(Yamaguchi Univ.) |
| 2nd Author's Name | Yoshiaki Ueda |
| 2nd Author's Affiliation | Fukuoka University(Fukuoka Univ.) |
| 3rd Author's Name | Takanori Koga |
| 3rd Author's Affiliation | Kindai University(Kindai Univ.) |
| 4th Author's Name | Noriaki Suetake |
| 4th Author's Affiliation | Yamaguchi University(Yamaguchi Univ.) |
| Date | 2022-12-06 |
| Paper # | SIS2022-35 |
| Volume (vol) | vol.122 |
| Number (no) | SIS-293 |
| Page | pp.pp.68-73(SIS), |
| #Pages | 6 |
| Date of Issue | 2022-11-28 (SIS) |