| Presentation | 1996/10/17 I11umination color estimation method based on gray-world assumption using several color images Harumi KAWAMURA, Toshio INUI, Satoshi SUZUKI, Yukio TOKUNAGA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes an illumination color estimation method based on a gray-world assumption. This assumption is that the average of object colors in a scene is gray, so that the average reflected color in the image (= average of pixel value) represents the illumination color. To determine the applicability of the estimation, the proposed method uses several color images: (1) images of the same scene under different illuminants, or (2) images of different scenes under the same illuminant. With only one image, it is impossible to know whether or not the image satisfies the gray-world assumption. This makes the estimation error large when the image does not satisfy the assumption. By using the applicability determination, the proposed method can estimate the illumination color from the images which satisfies the assumption. Our experimental results show that the determination process works well and estimation error is small. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | gray-world assumption / illumination color estimation / black body locus |
| Paper # | HIP96-23 |
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| Conference Information | |
| Committee | HIP |
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| Conference Date | 1996/10/17(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Human Information Processing (HIP) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | I11umination color estimation method based on gray-world assumption using several color images |
| Sub Title (in English) | |
| Keyword(1) | gray-world assumption |
| Keyword(2) | illumination color estimation |
| Keyword(3) | black body locus |
| 1st Author's Name | Harumi KAWAMURA |
| 1st Author's Affiliation | NTT Human Interfacs Laboratories() |
| 2nd Author's Name | Toshio INUI |
| 2nd Author's Affiliation | Faculty of Letters, Kyoto University |
| 3rd Author's Name | Satoshi SUZUKI |
| 3rd Author's Affiliation | NTT Human Interfacs Laboratories |
| 4th Author's Name | Yukio TOKUNAGA |
| 4th Author's Affiliation | NTT Human Interfacs Laboratories |
| Date | 1996/10/17 |
| Paper # | HIP96-23 |
| Volume (vol) | vol.96 |
| Number (no) | 306 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |