| Presentation | 2020-10-01 A Proposal of Backlit Image Enhancement Method Improving Visibility of Dark Regions Masato Akai, Yoshiaki Ueda, Takanori Koga, Noriaki Suetake, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A backlit image often includes both of bright regions and extremely dark regions. The visibility of the dark regions in such image tends to be low. General methods for image enhancement can't sufficiently enhance the quality of such image. In this report, we propose a backlit image enhancement method which improves the visibility of dark regions. In the proposed method, gamma correction and histogram equalization are used to make brightness adjusted image and contrast enhanced image, respectively. Then, the alpha blending of the brightness adjusted image and contrast enhanced image is obtained. After that, an output image is obtained by fusion of the original image and the resultant image of alpha blending to avoid causing artifact in bright regions. The weight for fusion is calculated by using binarization method and guided filter. Through experiments, we verify the effectiveness of the proposed method. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Backlit image / image enhancement / weight map / alpha blending |
| Paper # | SIS2020-11 |
| Date of Issue | 2020-09-24 (SIS) |
| Conference Information | |
| Committee | SIS / ITE-BCT |
|---|---|
| Conference Date | 2020/10/1(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | System Implementation Technology, Short Range Wireless Systems, Smart Multimedia Systems, Broadcasting Technology, etc. |
| Chair | Noriaki Suetake(Yamaguchi Univ.) / Kyoichi Saito(NHK) |
| Vice Chair | Tomoaki Kimura(Kanagawa Inst. of Tech.) / Naoto Sasaoka(Tottori Univ.) |
| Secretary | Tomoaki Kimura(Kindai Univ.) / Naoto Sasaoka(National Inst. of Tech., Ube College) / (NHK) |
| Assistant | Yukihiro Bandoh(NTT) / Soh Yoshida(Kansai Univ.) / Shigeki Shiokawa(Kanagawa Inst. of Tech.) / Shoichiro Sekiguchi(NHK) / Toshiharu Morizumi(NTT) / Toshimitsu Kobayashi(NBN) |
| Paper Information | |
| Registration To | Technical Committee on Smart Info-Media Systems / Technical Group on Broadcasting and Communication Technologies |
|---|---|
| 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 Improving Visibility of Dark Regions |
| Sub Title (in English) | |
| Keyword(1) | Backlit image |
| Keyword(2) | image enhancement |
| Keyword(3) | weight map |
| Keyword(4) | alpha blending |
| 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 | 2020-10-01 |
| Paper # | SIS2020-11 |
| Volume (vol) | vol.120 |
| Number (no) | SIS-176 |
| Page | pp.pp.5-10(SIS), |
| #Pages | 6 |
| Date of Issue | 2020-09-24 (SIS) |