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Binocular vision different-plane round hole detection method based on cross laser

A binocular vision, cross laser technology, used in non-contact industrial inspection and vision-based precision inspection of circular holes, binocular vision different-sided circular hole detection field, to overcome the phenomenon of reflection and diffraction, the effect of great application value

Pending Publication Date: 2022-03-01
CHANGCHUN UNIV OF SCI & TECH
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention provides a binocular vision different-surface circular hole detection method based on cross laser to solve the current problem that the accuracy of the detection result is affected by the perspective projection error, which can effectively reduce the perspective projection error of the image and improve the edge profile point matching accuracy

Method used

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  • Binocular vision different-plane round hole detection method based on cross laser
  • Binocular vision different-plane round hole detection method based on cross laser
  • Binocular vision different-plane round hole detection method based on cross laser

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Embodiment Construction

[0088] Include the following steps:

[0089] (1), connect with the industrial robot through the connection plate 7, the industrial robot drives the binocular camera to move to the top of the detection hole, and obtain the image of different faces of the workpiece through the binocular camera in the visual inspection system;

[0090] The visual inspection system includes an industrial camera 1, a high-definition macro lens 2, a turntable 3, a sliding block 4, a base plate 5, a positioning block 6, a connecting plate 7 and a laser emitter 8, wherein the sliding block 4 is in the long groove of the base plate 5 After adjusting the position, the bolts are connected. The turntable 3 is connected with the sliding block 4 through the arc groove and the angle is adjusted. Fixedly connected, the laser transmitter 8 is fixedly connected to the base plate 5 below the positioning block 6, and the base plate 5 is fixedly connected to the connecting plate 7 at the rear;

[0091] In the vis...

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Abstract

The invention relates to a binocular vision different-plane round hole detection method taking cross laser as a reference, and belongs to the technical field of measurement. The method comprises the following steps: acquiring an image, extracting an edge contour of a different-surface hole, establishing a matching point pair of edge contour points, obtaining three-dimensional point cloud data of the edge contour points, obtaining an outer contour size, constructing a mathematical model of the different-surface hole, and calculating hole site vertical precision and dimple depth of the different-surface hole. The method has the advantages that the perspective projection error of the image can be effectively reduced, the matching precision of the edge contour points is improved, and the method is suitable for non-contact industrial detection and circular hole precision detection based on vision.

Description

technical field [0001] The invention belongs to the field of advanced measurement technology, and in particular relates to a binocular vision detection method for circular holes on different surfaces based on a cross laser, which is suitable for non-contact industrial detection and precision detection of circular holes based on vision. Background technique [0002] At present, the detection method of different faces still adopts the traditional contact detection method. Although this detection method has high precision, the operation process is complicated, the detection efficiency is low, and it is difficult to meet the needs of batch detection. At the same time, the surface of the workpiece may be scratched during the detection process. To reduce the fatigue life of the counterbore and to study the non-contact different-face detection method is of great strategic significance to fill the technical gap in this field. [0003] "Research and Implementation of Point Cloud-Base...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T7/13G06T7/33G06T7/80G06T5/20G06N3/08G06N3/04
CPCG06T7/0004G06T7/13G06T7/33G06T7/85G06T5/20G06N3/084G06T2207/10028G06T2207/10012G06T2207/20081G06T2207/20084G06T2207/20028G06T2207/30164G06N3/048
Inventor 王红平王宇梁嵬张乂文赵世辰郭俸宏盖晨曦曹鸣
Owner CHANGCHUN UNIV OF SCI & TECH
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