| Presentation | 2020-06-03 Luminance-Independent Hue Image Generation Method Based on CIELAB Color Space Yuma Kinoshita, Hitoshi Kiya, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we propose luminance-independent hue-image generation method based on the CIELAB color space, from RAW images taken by commonly-used digital cameras. The color constancy of human vision has not been reproduced on a computer yet. In other words, colors of images captured by cameras are affected by lighting conditions at the time of shooting. Furthermore, non-linear operations in the cameras change colors of resulting RGB images. In the proposed method, the white balance is adjusted precisely according to a lighting condition of scene and then the brightness and saturation in CIELAB color space are equalized. The proposed method enables us to display the hue information of a scene appropriately on a typical display because pixel values are processed in the proposed method so that all pixel values of a final hue image are within the sRGB color gamut. A hue image generation experiment using two pairs of real images show that the proposed method can produce a hue image without the effect of luminance. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Color Image Processing / Color Cnstancy / CIELAB Color Space / RGB Color Space / Hue Image |
| Paper # | SIS2020-1 |
| Date of Issue | 2020-05-27 (SIS) |
| Conference Information | |
| Committee | SIS / IPSJ-AVM / ITE-3DIT |
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| Conference Date | 2020/6/3(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Intelligent Multimedia Systems, Applied Enbedded Systems, Three-Dimensional Image Technology (3DIT), etc. |
| Chair | Noriaki Suetake(Yamaguchi Univ.) / Sei Naito(KDDI Research, Inc.) / Shiro Suyama(Tokushima Univ.) |
| 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) / (NTT) / (Waseda Univ.) |
| Assistant | Yukihiro Bandoh(NTT) / Soh Yoshida(Kansai Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Smart Info-Media Systems / Special Interest Group on Audio Visual and Multimedia Information Processing / Technical Group on Three-Dimensional Image Technology |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Luminance-Independent Hue Image Generation Method Based on CIELAB Color Space |
| Sub Title (in English) | |
| Keyword(1) | Color Image Processing |
| Keyword(2) | Color Cnstancy |
| Keyword(3) | CIELAB Color Space |
| Keyword(4) | RGB Color Space |
| Keyword(5) | Hue Image |
| 1st Author's Name | Yuma Kinoshita |
| 1st Author's Affiliation | Tokyo Metropolitan University(Tokyo Metro. Univ.) |
| 2nd Author's Name | Hitoshi Kiya |
| 2nd Author's Affiliation | Tokyo Metropolitan University(Tokyo Metro. Univ.) |
| Date | 2020-06-03 |
| Paper # | SIS2020-1 |
| Volume (vol) | vol.120 |
| Number (no) | SIS-51 |
| Page | pp.pp.1-6(SIS), |
| #Pages | 6 |
| Date of Issue | 2020-05-27 (SIS) |