| Presentation | 2022-03-03 A Proposal of Night Vision Algorithm on Equ-Hue Plane in RGB Color Space Mashiho Mukaida, Yoshiaki Ueda, Eiji Uchino, Noriaki Suetake, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Images taken under low-light conditions such as at night or in a dark rooms are dark and have low visibility. Recently, many low-light image enhancement algorithms (night vision algorithms) have been proposed. However, the conventional methods have some problems such as causing over enhancement in bright regions and/or high computational cost. In this report, we propose a new low-light image enhancement method preserving the hue information in RGB color space. In the proposed method, the input pixels are represented by a convex combination of white, black, and pure color. Then, a modified gamma transform is applied to the combination coefficients in order to brighten only dark pixels. The histogram of black coefficients is smoothed by a gamma filter to improve the contrast of the image. The proposed method can improve the visibility of the image overall. In experiments, the effectiveness of the proposed method is verified by comparing with the state-of-the-art methods through qualitative and quantitative evaluations. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Image enhancement / Night vision algorithm / Equ-hue plane |
| Paper # | SIS2021-34 |
| Date of Issue | 2022-02-24 (SIS) |
| Conference Information | |
| Committee | SIS |
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| Conference Date | 2022/3/3(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Soft Computing, etc. |
| Chair | Noriaki Suetake(Yamaguchi Univ.) |
| Vice Chair | Tomoaki Kimura(Kanagawa Inst. of Tech.) / Naoto Sasaoka(Tottori Univ.) |
| Secretary | Tomoaki Kimura(NTT) / Naoto Sasaoka(National Inst. of Tech., Ube College) |
| Assistant | Soh Yoshida(Kansai Univ.) / Yoshiaki Makabe(Kanagawa Inst. of Tech.) |
| 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 Night Vision Algorithm on Equ-Hue Plane in RGB Color Space |
| Sub Title (in English) | |
| Keyword(1) | Image enhancement |
| Keyword(2) | Night vision algorithm |
| Keyword(3) | Equ-hue plane |
| 1st Author's Name | Mashiho Mukaida |
| 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 | Eiji Uchino |
| 3rd Author's Affiliation | Yamaguchi University(Yamaguchi Univ.) |
| 4th Author's Name | Noriaki Suetake |
| 4th Author's Affiliation | Yamaguchi University(Yamaguchi Univ.) |
| Date | 2022-03-03 |
| Paper # | SIS2021-34 |
| Volume (vol) | vol.121 |
| Number (no) | SIS-398 |
| Page | pp.pp.20-25(SIS), |
| #Pages | 6 |
| Date of Issue | 2022-02-24 (SIS) |