题名 | Self-calibration and motion recovery from silhouettes with two mirrors |
作者 | |
发表日期 | 2013 |
会议名称 | 11th Asian Conference on Computer Vision, ACCV 2012 |
会议录名称 | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
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ISSN | 0302-9743 |
卷号 | 7727 LNCS |
期号 | PART 4 |
页码 | 1-12 |
会议日期 | 2012.11.5-2012.11.9 |
会议地点 | Daejeon |
摘要 | This paper addresses the problem of self-calibration and motion recovery from a single snapshot obtained under a setting of two mirrors. The mirrors are able to show five views of an object in one image. In this paper, the epipoles of the real and virtual cameras are firstly estimated from the intersection of the bitangent lines between corresponding images, from which we can easily derive the horizon of the camera plane. The imaged circular points and the angle between the mirrors can then be obtained from equal angles between the bitangent lines, by planar rectification. The silhouettes produced by reflections can be treated as a special circular motion sequence. With this observation, technique developed for calibrating a circular motion sequence can be exploited to simplify the calibration of a single-view two-mirror system. Different from the state-of-the-art approaches, only one snapshot is required in this work for self-calibrating a natural camera and recovering the poses of the two mirrors. This is more flexible than previous approaches which require at least two images. When more than a single image is available, each image can be calibrated independently and the problem of varying focal length does not complicate the calibration problem. After the calibration, the visual hull of the objects can be obtained from the silhouettes. Experimental results show the feasibility and the preciseness of the proposed approach. © 2013 Springer-Verlag. |
DOI | 10.1007/978-3-642-37447-0_1 |
URL | 查看来源 |
语种 | 英语English |
Scopus入藏号 | 2-s2.0-84875891398 |
引用统计 | |
文献类型 | 会议论文 |
条目标识符 | https://repository.uic.edu.cn/handle/39GCC9TT/6546 |
专题 | 理工科技学院 |
作者单位 | 1.Dept. of Computer Science,United International College,28, Jinfeng Road, Tangjiawan,Zhuhai, Guangdong,China 2.Shenzhen Key Lab. of Intelligent Media and Speech,PKU-HKUST Shenzhen Hong Kong Institution,Shenzhen,China 3.Dept. of Electronic and Electrical Engineering,University of Sheffield,United Kingdom 4.Dept. of Computer Science,University of Hong Kong,Pokfulam Road,Hong Kong,Hong Kong |
第一作者单位 | 北师香港浸会大学 |
推荐引用方式 GB/T 7714 | Zhang, Hui,Shao, Ling,Wong, Kwan Yee Kenneth. Self-calibration and motion recovery from silhouettes with two mirrors[C], 2013: 1-12. |
条目包含的文件 | 条目无相关文件。 |
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