| Presentation | 2018-02-16 Image contrast enhancement based on noise aware shadow-up function Chiencheng Chien, Yuma Kinoshita, Sayaka Shiota, Hitoshi Kiya, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes a novel image contrast enhancement method based on a noise aware shadow-upfunction. Images taken by digital cameras have low contrast in dark or bright regions. This is due to a limiteddynamic range which imaging sensors have. For this reason, various contrast enhancement methods have so far beenproposed. However, conventional enhancement methods cause the loss of details in bright regions due to over-en-hancement of contrast. In addition, most of conventional methods amplify noise in dark regions because they do notconsider noise included images. The proposed method can enhance the image contrast without over-enhancementand noise amplification. In the proposed method, a shadow-up function is used for preventing over-enhancementand the loss of details in bright regions. In addition, a mapping function designed by using a noise aware histogramallows not only to enhance contrast of dark region, but also to avoid amplifying noise. Experimental results showthe effectiveness of the proposed method by comparing the proposed ones with conventional ones. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Contrast enhancement / Image enhancement / Noise aware / Shadow-up function |
| Paper # | ITS2017-81,IE2017-113 |
| Date of Issue | 2018-02-08 (ITS, IE) |
| Conference Information | |
| Committee | ITS / IE / ITE-MMS / ITE-HI / ITE-ME / ITE-AIT |
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| Conference Date | 2018/2/15(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hokkaido Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Image Processing, etc. |
| Chair | Takayoshi Yokota(Tottori Univ.) / Takayuki Hamamoto(Tokyo Univ. of Science) / Norihiko Ishii(NHK) / Masayuki Sato(Univ. of Kitakyushu) / Miki Haseyama(Hokkaido Univ.) / Nobuhiko Mukai(Tokyo Cisy Univ.) |
| Vice Chair | Masahiro Fujii(Utsunomiya Univ.) / Tomotaka Wada(Kansai Univ.) / Kazuya Kodama(NII) / Hideaki Kimata(NTT) / / / Norio Tagawa(Tokyo Metropolitan Univ.) / Hisaki Nate(Tokyo Polytechnic Univ.) |
| Secretary | Masahiro Fujii(Meiji Univ.) / Tomotaka Wada(Saitama Univ.) / Kazuya Kodama(Nagoya Univ.) / Hideaki Kimata(KDDI Research) / (NHK) / (NTT) / Norio Tagawa(NHK) / Hisaki Nate(NHK) |
| Assistant | Msataka Imao(ME) / Yanlei Gu(Univ. of Tokyo) / Kenshi Saho(Toyama Prefectural Univ.) / Kouichiro Hashiura(Akita Prefectural Univ.) / Yasutaka Matsuo(NHK) / Kazuya Hayase(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Intelligent Transport Systems Technology / Technical Committee on Image Engineering / Technical Group on Multi-media Storage / Technical Group on Human Inormation / Technical Group on Media Engineering / Technical Group on Artistic Image Technology |
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| Language | ENG-JTITLE |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Image contrast enhancement based on noise aware shadow-up function |
| Sub Title (in English) | |
| Keyword(1) | Contrast enhancement |
| Keyword(2) | Image enhancement |
| Keyword(3) | Noise aware |
| Keyword(4) | Shadow-up function |
| 1st Author's Name | Chiencheng Chien |
| 1st Author's Affiliation | Tokyo Metropolitan University(Tokyo Metro. Univ.) |
| 2nd Author's Name | Yuma Kinoshita |
| 2nd Author's Affiliation | Tokyo Metropolitan University(Tokyo Metro. Univ.) |
| 3rd Author's Name | Sayaka Shiota |
| 3rd Author's Affiliation | Tokyo Metropolitan University(Tokyo Metro. Univ.) |
| 4th Author's Name | Hitoshi Kiya |
| 4th Author's Affiliation | Tokyo Metropolitan University(Tokyo Metro. Univ.) |
| Date | 2018-02-16 |
| Paper # | ITS2017-81,IE2017-113 |
| Volume (vol) | vol.117 |
| Number (no) | ITS-431,IE-432 |
| Page | pp.pp.245-250(ITS), pp.245-250(IE), |
| #Pages | 6 |
| Date of Issue | 2018-02-08 (ITS, IE) |