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Target binding method of machine vision 3D four-wheel position indicator

A four-wheel aligner and machine vision technology, which is applied in the direction of instruments, image data processing, calculation, etc., can solve the problems such as the influence of the accuracy of the four-wheel alignment results, and achieve the effect of easy implementation and simple operation

Active Publication Date: 2017-07-04
深圳市三杰宜科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing target binding parameters are generally derived from the geometric relationship of the target design drawings. Due to the influence of errors in target processing and assembly, there is a certain deviation between the theoretical value and the actual value of the binding parameters. The accuracy of positioning results has a great impact

Method used

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  • Target binding method of machine vision 3D four-wheel position indicator
  • Target binding method of machine vision 3D four-wheel position indicator
  • Target binding method of machine vision 3D four-wheel position indicator

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Experimental program
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Embodiment Construction

[0016] The concrete realization process of the present invention is as follows:

[0017] a. Fix a circular tube column on a platform with good flatness, and the inner wall of the circular tube column is precisely matched with the target connecting rod of the four-wheel aligner;

[0018] b. Insert the above-mentioned target connecting rod into the inner wall of the circular tube, and the target can rotate around the axis of the above-mentioned circular tube column;

[0019] c. Set up the calibrated industrial camera on the tripod, and place the tripod on the above-mentioned cloud platform;

[0020] d. Adjust the tripod so that the target can be better imaged within the field of view of the industrial camera, and the industrial camera continuously shoots and saves images while rotating the target;

[0021] e. Move the tripod to another position on the back of the target, rotate the target so that its front faces the industrial camera lens, and repeat the above step d;

[0022]...

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Abstract

The invention discloses a target binding method of a machine vision 3D four-wheel position indicator. Industrial cameras are utilized for acquiring a rotating image of a to-be-bond target which is inserted into a cylindrical vertical column. A mathematical model is established and an objective function is constructed according to invariance of a target rotating shaft and an intersection point between the target rotating shaft and a target working surface. Images are photographed through placement positions of the two industrial cameras at a front surface and a back surface for realizing combined solving. The target binding method has advantages of low cost of required auxiliary devices, high binding parameter solving precision, simple operation, easy realization and high suitability for in-factory and field binding.

Description

technical field [0001] The invention relates to the field of machine vision measurement, in particular to a target binding method of a machine vision 3D four-wheel aligner. Background technique [0002] The machine vision-based 3D four-wheel alignment instrument is one of the four-wheel alignment products widely used in the market at this stage. Its equipment is mainly composed of two or more industrial cameras with fixed positions, four sets of targets and wheel clamps and other accessories. During the four-wheel alignment inspection, the four targets are respectively fixed on the four wheel clamps through their respective connecting rods, and then the four wheel clamps are respectively fixed on the four wheel hubs of the car, and the four targets are photographed and obtained by the industrial camera Pose parameters, establish a coordinate system and solve the four-wheel alignment parameters to complete the positioning detection. Commonly used detection modes include cart...

Claims

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Application Information

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IPC IPC(8): G06T7/80
CPCG06T2207/30244
Inventor 赵前程杨天龙王宪
Owner 深圳市三杰宜科技有限公司