A Direct Method to Self-Calibrate a Surveillance Camera by Observing a Walking Pedestrian

A Direct Method to Self-Calibrate a Surveillance Camera by Observing a Walking Pedestrian
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通过观察步行行人来自校准监控摄像头的直接方法

DOI:
10.1109/dicta.2009.49
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发表时间:
2009
期刊:
2009 Digital Image Computing: Techniques and Applications
影响因子:
--
通讯作者:
Jian Zhang
Jian Zhang
中科院分区:
--
文献类型:
--
作者:
Worapan Kusakunniran;Hongdong Li;Jian Zhang

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相似文献

最近的研究表明,只需观察行走的人即可校准监控摄像头。该过程可以看作是相机自标定技术的一种特殊应用。沿着这条线已经提出了几种方法,但大多数都有一定的限制,例如要求人类以恒定速度行走,或者需要在地面上标记两条正交线等,这阻碍了它们的适用性。在本文中,我们提出了一种新方法,可以消除大部分这些限制。通过巧妙地利用射影几何中的互比关系,我们的方法表明可以直接估计完整的 3x4 相机投影矩阵,而无需首先将其分解为焦距、光学中心等物理参数。对真实数据的大量实验表明我们的算法在实际情况下表现良好。
Recent efforts show that it is possible to calibrate a surveillance camera simply from observing a walking human. This procedure can be seen as a special application of the camera self-calibration technique. Several methods have been proposed along this line, but most of them have certain restrictions, such as require the human walking at a constant speed, or require two orthogonal lines marked on the ground, etc. This has hindered their applicability. In this paper we propose a new method that removes most of these restrictions. By clever uses of the cross-ratio relationship in projective geometry, our method shows it is possible to directly estimate a full 3x4 camera projection matrix without first decomposing it into physical parameters like focal-length, optical center, etc. Extensive experiments on real data show our algorithm performs well in real situations.
DOI: --
发表时间: 1998
期刊: --
影响因子: --
作者:
E. Trucco;A. Verri
通讯作者: E. Trucco;A. Verri
DOI: 10.1109/34.888718
发表时间: 2000-11-01
影响因子: 23.6
作者:
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通讯作者: Zhang, ZY
DOI: 10.1109/jra.1987.1087109
发表时间: 1987-08-01
期刊: IEEE JOURNAL OF ROBOTICS AND AUTOMATION
影响因子: --
作者:
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