| Presentation | 2019-12-13 Hue-preserving Color Image Enhancement Method by Using Ideal Distribution and Gradient Norm-based Weighted Histogram Yoshiaki Ueda, Noriaki Suetake, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this report, we propose a hue-preserving color image enhancement method by using an ideal coefficient distribution and gradient norm-based weighted histogram. In addition, it is described that the relationship between the color manipulation of the proposed method and that in the HSV color space. In our algorithm, each pixel is represented by the convex combination of white, black, and its pure color. The coefficients of the convex combination are transformed so that those distribution closes to an ideal coefficient distribution in order to enhance intensity contrast and colorfulness. The ideal coefficient distribution is derived from uniform distribution of the RGB color space. Furthermore, a gradient norm-based weighted histogram is used to suppress the image quality degradation in the flat region. Experimental results show that the proposed algorithm can enhance the intensity contrast and the colorfulness while suppress the degradation in the flat region. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | color image enhancement / constant hue plane / convex combination |
| Paper # | SIS2019-31 |
| Date of Issue | 2019-12-05 (SIS) |
| Conference Information | |
| Committee | SIS |
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| Conference Date | 2019/12/12(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Okayama University of Science |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Smart Personal Systems, etc. |
| Chair | Takayuki Nakachi(NTT) |
| Vice Chair | Noriaki Suetake(Yamaguchi Univ.) / Tomoaki Kimura(Kanagawa Inst. of Tech.) |
| Secretary | Noriaki Suetake(Tokyo Metropolitan Univ.) / Tomoaki Kimura(Kindai Univ.) |
| Assistant | Hideaki Misawa(National Inst. of Tech., Ube College) / Yukihiro Bandoh(NTT) |
| 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) | Hue-preserving Color Image Enhancement Method by Using Ideal Distribution and Gradient Norm-based Weighted Histogram |
| Sub Title (in English) | |
| Keyword(1) | color image enhancement |
| Keyword(2) | constant hue plane |
| Keyword(3) | convex combination |
| 1st Author's Name | Yoshiaki Ueda |
| 1st Author's Affiliation | Fukuoka University(Fukuoka Univ.) |
| 2nd Author's Name | Noriaki Suetake |
| 2nd Author's Affiliation | Yamaguchi University(Yamaguchi Univ.) |
| Date | 2019-12-13 |
| Paper # | SIS2019-31 |
| Volume (vol) | vol.119 |
| Number (no) | SIS-335 |
| Page | pp.pp.39-44(SIS), |
| #Pages | 6 |
| Date of Issue | 2019-12-05 (SIS) |