Extrinsic Camera Calibration From a Moving Person

Extrinsic Camera Calibration From a Moving Person
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通过移动的人进行外部相机校准

DOI:
10.1109/lra.2022.3192629
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发表时间:
2022
影响因子:
5.2
通讯作者:
Ko Nishino
Ko Nishino
中科院分区:
计算机科学2区
文献类型:
--
作者:
Sang-Eun Lee;Keisuke Shibata;Soma Nonaka;Shohei Nobuhara;Ko Nishino

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提出了一种适用于房间尺度多视点成像系统的摄像机标定方法。我们的主要想法是利用我们的关节运动作为校准目标。我们表明,一个自由移动的人提供了一组定向点的轨迹(例如,具有脊柱方向的颈部关节),从中我们可以估计观察它们的所有相机的位置和姿态。该方法只需要摄像机同步,并在每个视图序列中估计2D人体姿势。通过将这些2D姿态提升到3D,直接提供一组定向的3D关节,我们用线性算法计算所有相机的外部参数。我们还表明,这使得自我监督的3D联合估计的细化,和迭代的两个导致准确的相机extrinsics和3D姿态估计的规模。大量的实验使用合成和真实的数据证明了该方法的有效性和灵活性。该方法将作为一个有用的工具,以扩大多视图视觉系统的效用,因为它消除了繁琐的现场校准程序的需要。
We propose a novel camera calibration method for a room-scale multi-view imaging system. Our key idea is to leverage our articulated body movements as a calibration target. We show that a freely moving person provides trajectories of a set of oriented points (e.g., neck joint with spine direction) from which we can estimate the locations and poses of all cameras observing them. The method only requires the cameras to be synced and that 2D human poses are estimated in each view sequence. By elevating these 2D poses to 3D which directly provides a set of oriented 3D joints, we compute the extrinsic parameters of all cameras with a linear algorithm. We also show that this enables self-supervision of the 3D joint estimator for refinement, and the iteration of the two leads to accurate camera extrinsics and 3D pose estimates up to scale. Extensive experiments using synthetic and real data demonstrate the effectiveness and flexibility of the method. The method will serve as a useful tool to expand the utility of multi-view vision systems as it eliminates the need for cumbersome on-site calibration procedures.
一种基于人体运动分析的便捷多摄像头自标定方法
DOI: 10.1109/icig.2009.92
发表时间: 2009
期刊: 2009 Fifth International Conference on Image and Graphics
影响因子: --
作者:
Xiuwei Zhang;Yanning Zhang;Xingong Zhang;Tao Yang;Xiaomin Tong;Haichao Zhang
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发表时间: 2008
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期刊: --
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DOI: 10.1109/34.888718
发表时间: 2000-11-01
影响因子: 23.6
作者:
Zhang, ZY
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