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使用云阴影推断场景结构和相机校准Using Cloud Shadows to Infer Scene Structure and Camera Calibration |
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| 课程网址: | http://videolectures.net/cvpr2010_jacobs_ucsi/ |
| 主讲教师: | Nathan Jacobs |
| 开课单位: | 华盛顿大学 |
| 开课时间: | 2010-07-19 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | We explore the use of clouds as a form of structured lighting to capture the 3D structure of outdoor scenes observed over time from a static camera. We derive two cues that relate 3D distances to changes in pixel intensity due to clouds shadows. The first cue is primarily spatial, works with low frame-rate time lapses, and supports estimating focal length and scene structure, up to a scale ambiguity. The second cue depends on cloud motion and has a more complex, but still linear, ambiguity. We describe a method that uses the spatial cue to estimate a depth map and a method that combines both cues. Results on time lapses of several outdoor scenes show that these cues enable estimating scene geometry and camera focal length. |
| 关 键 词: | 静态相机; 空间; 相机焦距 |
| 课程来源: | 视频讲座网 |
| 最后编审: | 2020-06-11：chenxin |
| 阅读次数: | 33 |