Calibration method

A calibration method and a calibration board technology, which are applied in the calibration field and can solve problems such as low precision

Inactive Publication Date: 2020-07-07
广州智信科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Based on this, it is necessary to provide a calibration m

Method used

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[0020] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and do not limit the protection scope of the present invention.

[0021] A calibration method including:

[0022] Place the calibration device with the calibration board assembly, light source assembly and light guide assembly under the industrial camera;

[0023] Turn on the light source assembly of the calibration device;

[0024] Turn on the industrial camera to take pictures of the calibration device to obtain pictures;

[0025] While taking pictures, move the calibration device within the photographing range of the industrial camera, so that the industrial camera obtains image information of different orientations of the calibration device;

[0026] The...

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Abstract

The invention relates to a calibration method. The method comprises the steps: arranging a calibration device with a calibration plate assembly, a light source assembly and a light guide assembly below an industrial camera; starting a light source assembly of the calibration device; turning on the industrial camera to photograph the calibration device to obtain a picture; moving the calibration device within the photographing range of the industrial camera while photographing, so that the industrial camera acquires image information of the calibration device in different directions; obtainingthe parameters of the industrial camera through the correction algorithm of the industrial camera, and completing the calibration of the industrial camera. The high-precision calibration requirement under various working conditions is met, the calibration stability and efficiency are improved, the calibration plate assembly can be prevented from being collided, scratched and abraded, and the service life is prolonged.

Description

Technical field [0001] The invention relates to the field of machine vision, in particular to a calibration method. Background technique [0002] In the application fields of machine vision such as visual ranging and three-dimensional reconstruction, it is often necessary to determine the relationship between the coordinates of a certain point on the surface of the measured object and the coordinates of the corresponding point in the image. For this reason, the physical parameters of the camera should be modeled to obtain the physical The geometric model parameters of the camera; the process of seeking parameters is the process of camera calibration. Camera parameter calibration is one of the most important factors that affect the accuracy of the machine vision system. The result of the calibration is directly related to the subsequent algorithm processing and final accuracy of the vision system, while the traditional camera calibration accuracy is not high. Summary of the inven...

Claims

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Application Information

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IPC IPC(8): G01C25/00
CPCG01C25/00
Inventor 谢士幸
Owner 广州智信科技有限公司
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