| Presentation | 2008-09-05 Illumination Distribution from Shadow Using a Single Real Image for Outdoor Mixed Reality Raita Kudo, Tetsuya Kakuta, Rei Kawakami, Takeshi Oishi, Katsushi Ikeuchi, |
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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 a method of estimating illumination distribution from shadow in Mixed Reality (MR) using a single real image. We label four regions in real image for shadow extraction with log F value calculated from the pixel value and the spectral sensitivity characteristic of the camera. Then we estimate shadow image by thesefour regions, using Bayesian optimization which allows for the optimal extraction of smooth shadow. Finally we estimate the illumination distribution of a real scene from shadow image. we represent whole distribution as aset of point light sources, and solve linear equations which leads relations between each pixel value of shadow image and a point light sources. the estimated illumination distribution of an outdoor Mixed Reality is teriable in a real scene. |
| Keyword(in Japanese) | (See Japanese page) |
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| Paper # | PRMU2008-57,HIP2008-57 |
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| Conference Information | |
| Committee | PRMU |
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| Conference Date | 2008/8/29(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Pattern Recognition and Media Understanding (PRMU) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Illumination Distribution from Shadow Using a Single Real Image for Outdoor Mixed Reality |
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| 1st Author's Name | Raita Kudo |
| 1st Author's Affiliation | Interfaculty Initiative in Information Studies, The University of Tokyo() |
| 2nd Author's Name | Tetsuya Kakuta |
| 2nd Author's Affiliation | Interfaculty Initiative in Information Studies, The University of Tokyo |
| 3rd Author's Name | Rei Kawakami |
| 3rd Author's Affiliation | Institute of Industrial Science, The University of Tokyo |
| 4th Author's Name | Takeshi Oishi |
| 4th Author's Affiliation | Interfaculty Initiative in Information Studies, The University of Tokyo |
| 5th Author's Name | Katsushi Ikeuchi |
| 5th Author's Affiliation | Interfaculty Initiative in Information Studies, The University of Tokyo |
| Date | 2008-09-05 |
| Paper # | PRMU2008-57,HIP2008-57 |
| Volume (vol) | vol.108 |
| Number (no) | 198 |
| Page | pp.pp.- |
| #Pages | 8 |
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