Multi-camera calibration method and device based on reference object

A calibration method and technology of a calibration device, which are applied in the field of calibration object calibration, can solve the problems of complex calibration method, limited camera position relationship, and low calibration accuracy.

Inactive Publication Date: 2017-05-31
GUANGDONG UNIV OF TECH
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Problems solved by technology

[0004] The embodiment of the present invention provides a multi-camera calibration method and device based on a reference object, which solves the techni...

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  • Multi-camera calibration method and device based on reference object
  • Multi-camera calibration method and device based on reference object
  • Multi-camera calibration method and device based on reference object

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Embodiment Construction

[0042] Embodiments of the present invention provide a multi-camera calibration method and device based on reference objects, which are used to solve the technical problems of low calibration accuracy, limited positional relationship between cameras, and complex calibration methods in existing calibration methods.

[0043] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0044] see figure 1 , ...

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Abstract

The embodiment of the invention discloses a multi-camera calibration method and device based on a reference object. The multi-camera calibration method is used for solving the technical problems that existing calibration methods are not high in calibration precision, the positional relation between cameras is limited, and the existing methods are complicated. According to the embodiment, the multi-camera calibration method based on the reference object comprises the steps that S1, information of measurement performed on the preset reference object through multiple cameras is received, and feature points with a large surface curvature change of the reference object are acquired; S2, the positional relation between the cameras in an arbitrary number is obtained through the feature points; and S3, a global coordinate system with any feature point on the reference object being the origin or based on a local coordinate system corresponding to any camera is obtained through the positional relation between the cameras in the arbitrary number.

Description

technical field [0001] The invention relates to the field of calibration object calibration, in particular to a multi-camera calibration method and device based on a reference object. Background technique [0002] The calibration accuracy of the existing calibration methods is not high, the positional relationship between the cameras is limited, and the calibration method is complicated. [0003] Before using multiple industrial cameras to measure an object, it is necessary to determine the positional relationship between the cameras. In the existing calibration methods, the self-calibration technology does not need to make a specific reference object, and the calibration is performed by obtaining information in the natural scene, and the calibration accuracy is not high. Contents of the invention [0004] The embodiment of the present invention provides a multi-camera calibration method and device based on a reference object, which solves the technical problems of low ca...

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Application Information

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IPC IPC(8): G06T7/80
Inventor 吕文阁胡鹏刘瑾张洪成思源
Owner GUANGDONG UNIV OF TECH
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