Multi-view camera external orientation parameter calibration method adopting mutual shooting method

A multi-eye camera and parameter calibration technology, which is applied in image data processing, instruments, calculations, etc., to achieve efficient measurement work, reduce measurement costs, and improve work efficiency and accuracy

Active Publication Date: 2020-07-14
CIVIL AVIATION UNIV OF CHINA
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Problems solved by technology

However, as the working scene changes, the extrinsic parameters between cameras in the system are also changing, and because of the limitations of the working

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  • Multi-view camera external orientation parameter calibration method adopting mutual shooting method
  • Multi-view camera external orientation parameter calibration method adopting mutual shooting method
  • Multi-view camera external orientation parameter calibration method adopting mutual shooting method

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[0024] The method for calibrating the external orientation parameters of multi-eye cameras provided by the present invention using the mutual shooting method will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The accompanying drawings are for reference and description only, and do not constitute a limitation to the patent protection scope of the present invention.

[0025] like figure 1 , 2 As shown in and 3, the method for calibrating the external orientation parameters of multi-eye cameras provided by the present invention includes performing the following steps in order:

[0026] Step 1) Establish a multi-camera space measurement system calibration system: the system includes a first measurement camera 1, a second measurement camera 2, a target L, an auxiliary camera 3 and a precision rotary table 4; wherein, the first measurement camera 1, the second measurement camera The lower ends of the second measurement camera ...

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Abstract

The invention discloses a multi-view camera external orientation parameter calibration method adopting a mutual shooting method. The method comprises the following steps: establishing a multi-camera space measurement system calibration system; calibrating intrinsic parameters of the monocular camera; combing the auxiliary camera with the measurement camera to calibrate external parameters of the binocular vision system; calculating the pose of the target in an auxiliary camera coordinate system; calculating the pose of the target in a self-measurement camera coordinate system; calibrating mutual shooting external parameters; and rotating the measuring camera to a working posture and carrying out measurement and the like. The multi-view camera external orientation parameter calibration method adopting the mutual shooting method provided by the invention can quickly and accurately calibrate the external parameters between the measurement cameras in a multi-camera measurement system, andcan flexibly adapt to various working environments, so that the measurement work can be efficiently carried out. Besides, the external parameters between the cameras can be calibrated quickly, accurate parameters are provided for subsequent measurement work, the working efficiency and precision can be improved, and the measurement cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of machine vision three-dimensional space coordinate measurement, and in particular relates to a method for calibrating external orientation parameters of multi-eye cameras using a mutual shooting method. Background technique [0002] With the continuous development of my country's machinery manufacturing, aerospace, robotics and other fields, especially the development of domestic large aircraft production technology, the requirements for spatial measurement accuracy in the manufacturing and assembly process are also increasing. The accuracy of measurement technology directly determines the accuracy of industrial manufacturing and assembly. The traditional three-coordinate measuring machine is too large and has low calculation efficiency. Moreover, traditional measurement methods often need to touch the measured object, so it is easy to cause damage to the measured object. It has long been unable to meet th...

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Application Information

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IPC IPC(8): G06T7/80
CPCG06T7/80G06T2207/10004Y02T10/40
Inventor 吴军李泽川徐鋆李雁玲李鑫
Owner CIVIL AVIATION UNIV OF CHINA
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