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Binocular-stereoscopic-vision-based workpiece detection and three-dimensional measurement system and detection method

A technology of binocular stereo vision and workpiece detection, which is applied in the direction of measuring devices, image data processing, instruments, etc., can solve the problems of unintelligent size measurement, easy damage to the surface of the workpiece, and low precision, so as to eliminate the influence of light and reduce Edge glitches, effects that improve accuracy

Inactive Publication Date: 2017-07-21
LIAOCHENG UNIV
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AI Technical Summary

Problems solved by technology

[0002] In the current industrial production, when a large number of workpieces are detected and measured online, problems such as low efficiency, low precision, and easy damage to the surface of the workpiece often occur in manual visual inspection and measurement.
For ordinary mechanical measuring tools, although manual measurement problems are not easy to occur, they are all controlled by fixed programs, and the requirements for the position of the workpiece are particularly high, otherwise they cannot be measured, and the full intelligence of dimension measurement has not been achieved.

Method used

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Embodiment

[0032] Embodiments of a workpiece detection method based on binocular stereo vision and an image processing system for realizing the method, so as to realize real-time online detection of workpieces.

[0033] The image processing system structure diagram includes image acquisition module, camera calibration module, image preprocessing module, stereo correction module, three-dimensional information recovery module and detection and measurement module.

[0034] figure 1 It is a system structure diagram of the present invention, which includes:

[0035] LED ring light, directly above the conveyor belt, provides light source for the CCD camera;

[0036] The workpiece is placed on the conveyor belt and passes through the CCD camera;

[0037] A photoelectric trigger, which is connected with the light source system and the CCD camera, and is used to trigger the work of the CCD camera and the camera;

[0038] The image processing unit is the halcon software installed in the compute...

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Abstract

The invention provides a real-time workpiece detection and three-dimensional measurement method based on binocular stereoscopic vision and an image processing system for realizing the method. A measuring system is composed of an image acquisition module, a camera calibration module, an image preprocessing module, a stereo correction module, a three-dimensional information recovery module and a detection and measurement module. Therefore, real-time and non-contact detection and measurement of workpieces in batches can be realized.

Description

technical field [0001] The invention is a workpiece detection and three-dimensional measurement system and detection method based on binocular stereo vision, belongs to the field of image processing and machine vision, relates to halcon software, and specifically relates to real-time on-line detection of factory production workpieces. Background technique [0002] In the current industrial production, when a large number of workpieces are detected and measured online, problems such as low efficiency, low precision, and easy damage to the surface of the workpiece often occur in manual visual inspection and measurement. For ordinary mechanical measurement tools, although manual measurement problems are not easy to occur, they are all controlled by fixed programs, and the requirements for the position of the workpiece are particularly high, otherwise they cannot be measured, and the full intelligence of dimensional measurement has not been achieved. The non-contact binocular st...

Claims

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Application Information

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IPC IPC(8): G01B11/00G01B11/24G06T7/11G06T7/13G06T7/136G06T7/80
CPCG01B11/00G01B11/24G06T7/0004G06T2207/10024G06T2207/20032G06T2207/30164
Inventor 葛广英张如如申哲
Owner LIAOCHENG UNIV
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