Multi-camera internal and external parameter calibration method based on three-point calibration object

A calibration method and a technology of internal and external parameters, applied in image data processing, instruments, calculations, etc., can solve the problems of increased difficulty, single camera angle of view cannot meet the expectations of a large-scale three-dimensional space, and low calibration accuracy, so as to achieve simple production and operability Strong performance and good algorithm robustness
CN107358633AInactive Publication Date: 2017-11-17北京轻威科技有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
北京轻威科技有限责任公司
Publication Date
2017-11-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a multi-camera internal and external parameter calibration method based on a three-point calibration object. The method comprises steps of S10, image point data acquisition; S20, every-two-camera internal and external parameter calibration; S30, multi-camera internal and external parameter calibration under a unified reference camera coordinate system; and S40, multi-camera internal and external parameter calibration under a designated world coordinate system. The method is advantaged in that a calibration tool is simple to make, limiting the calibration objects to move in a public view field of all the cameras is not needed, strong operability is realized, a multi-camera cascade path is determined through utilizing the common view field relationship, more image points participate into operation, and algorithm robustness is better.
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Description

technical field

[0001] The invention belongs to the technical field of computer vision and camera calibration, and in particular relates to a multi-camera internal and external parameter calibration method based on three-point calibration objects. Background technique

[0002] Camera calibration technology uses the 2D image of the calibrated object to recover the internal and external parameters of the camera, and then reconstructs the 3D information of the scene. It is a key step in the field of computer vision and a prerequisite for the application of visual sensors in various fields. and other fields have a wide range of applications.

[0003] In recent years, with the vigorous development of virtual reality, the perspective of a single camera cannot meet people's expectations for a large-scale three-dimensional space, and multi-camera combination and calibration have gradually become a new research hotspot. However, the existing multi-camera calibration methods often re...

Claims

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