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Calibration method, device, electronic equipment and readable storage medium of measuring system

A technology of measurement system and calibration method, which is applied to measurement devices, optical devices, image analysis, etc., can solve problems such as complicated operation and achieve the effect of simple calibration method.

Active Publication Date: 2021-10-15
HANGZHOU HIKROBOT TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above calibration method needs to place the calibration blocks in different positions, and then extract multiple pictures, so the operation of this method is relatively cumbersome

Method used

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  • Calibration method, device, electronic equipment and readable storage medium of measuring system
  • Calibration method, device, electronic equipment and readable storage medium of measuring system
  • Calibration method, device, electronic equipment and readable storage medium of measuring system

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Embodiment Construction

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, 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.

[0052] In the image measurement process and machine vision applications, during the measurement process, the line laser is irradiated on the measured object, and the cross-section of the measured object is imaged through the camera, and the laser bar formed on the measured object by the line laser can be Coordinates in the image, calculate the physical size of the cross-sectional profile of the measured object. Since it is necessary to calculate the physical s...

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Abstract

Embodiments of the present invention provide a measurement system calibration method, device, electronic equipment, and readable storage medium, which are applied in the field of machine vision technology. The measurement system includes a laser and a camera. The generated line laser irradiates the contour map of the cross-section of the calibration block, and determines the pixel coordinates of at least four non-collinear vertices on the cross-section of the calibration block in the image coordinate system where the contour map is located; according to the spatial coordinates and pixel coordinates, determine the line laser formed The homography matrix of the light plane to the image plane formed by the contour map. The embodiment of the present invention only needs to collect one picture to complete the calibration, the calibration method is simple and fast, and is suitable for on-site calibration.

Description

technical field [0001] The invention relates to the technical field of machine vision, in particular to a calibration method, device, electronic equipment and readable storage medium of a measuring system. Background technique [0002] In the process of image measurement and machine vision applications, in order to determine the relationship between the three-dimensional geometric position of a point on the surface of a space object and the corresponding point in the image of the space object, it is necessary to establish a geometric model of camera imaging. The geometric model parameters include: camera parameters and light plane equations, wherein the camera parameters include: camera intrinsic parameters, camera extrinsic parameters and distortion coefficients. The internal reference of the camera refers to the focal length f of the camera in the x-direction and y-direction x and f y , and the image center coordinates (u 0 , v 0 ), the distortion coefficient refers to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/80G01B11/00
CPCG01B11/00G06T7/80
Inventor 孙元栋
Owner HANGZHOU HIKROBOT TECH CO LTD
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