| Presentation | 2012-12-07 rotate calibration of hemispherical photographs Takahiro SAKURAI, Mamoru KUBO, Naoto KAMATA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Hemispherical photography has become a widely used tool for the estimation of forest structural attributes and seasonal change of crown.Photographs of canopy were taken looking upwards from the forest floor, using a digital camera with 180° fisheye lens.The fisheye camera was mounted vertically on a tripodusing the two dimensional level and the orientation of image was turnedto North using the compass. However, camera calibration was necessary for the exact registration of seasonal images.In this study, we proposed the method for rotate calibration of fisheye camera by using a nonlinear optimization. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | hemispherical photographs / otation parameters / camera calibration / Levenberg-Marquardt method |
| Paper # | CS2012-87,IE2012-101 |
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| Conference Information | |
| Committee | IE |
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| Conference Date | 2012/11/29(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
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| Paper Information | |
| Registration To | Image Engineering (IE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | rotate calibration of hemispherical photographs |
| Sub Title (in English) | |
| Keyword(1) | hemispherical photographs |
| Keyword(2) | otation parameters |
| Keyword(3) | camera calibration |
| Keyword(4) | Levenberg-Marquardt method |
| 1st Author's Name | Takahiro SAKURAI |
| 1st Author's Affiliation | Division of Electrical and Computer Engineering Kanazawa University() |
| 2nd Author's Name | Mamoru KUBO |
| 2nd Author's Affiliation | Division of Electrical and Computer Engineering Kanazawa University |
| 3rd Author's Name | Naoto KAMATA |
| 3rd Author's Affiliation | Graduate School of Agricultural and Life Sciences The University of Tokyo |
| Date | 2012-12-07 |
| Paper # | CS2012-87,IE2012-101 |
| Volume (vol) | vol.112 |
| Number (no) | 335 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |