ArticleSensors (Basel, Switzerland)2020
Multi-Camera-Based Universal Measurement Method for 6-DOF of Rigid Bodies in World Coordinate System.
Article in Sensors (Basel, Switzerland), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Vehicle Pose Measurement with a Single Image via the Double-Dual-Ellipse Feature of Wheel Rims.Sensors (Basel, Switzerland) · 2026Article
- Dimensional Accuracy Evaluation of Single-Layer Prints in Direct Ink Writing Based on Machine Vision.Sensors (Basel, Switzerland) · 2025Article
- Research on the Measurement Technology of Rotational Inertia of Rigid Body Based on the Principles of Monocular Vision and Torsion Pendulum.Sensors (Basel, Switzerland) · 2023Article
- DoF-Dependent and Equal-Partition Based Lens Distortion Modeling and Calibration Method for Close-Range Photogrammetry.Sensors (Basel, Switzerland) · 2020Article
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Authors and funding
7 authors.
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Abstract
The measurement of six-degrees-of-freedom (6-DOF) of rigid bodies plays an important role in many industries, but it often requires the use of professional instruments and software, or has limitations on the shape of measured objects. In this paper, a 6-DOF measurement method based on multi-camera is proposed, which is accomplished using at least two ordinary cameras and is made available for most morphological rigid bodies. First, multi-camera calibration based on Zhang Zhengyou's calibration method is introduced. In addition to the intrinsic and extrinsic parameters of cameras, the pose relationship between the camera coordinate system and the world coordinate system can also be obtained. Secondly, the 6-DOF calculation model of proposed method is gradually analyzed by the matrix analysis method. With the help of control points arranged on the rigid body, the 6-DOF of the rigid body can be calculated by the least square method. Finally, the Phantom 3D high-speed photogrammetry system (P3HPS) with an accuracy of 0.1 mm/m was used to evaluate this method. The experiment results show that the average error of the rotational degrees of freedom (DOF) measurement is less than 1.1 deg, and the average error of the movement DOF measurement is less than 0.007 m. In conclusion, the accuracy of the proposed method meets the requirements.
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