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Machine vision cutting method applied to laser cutting machine

A technology of laser cutting machine and machine vision, which is applied in the direction of instruments, computer components, character and pattern recognition, etc. It can solve the problems of low recognition accuracy, demanding environmental light source recognition, complicated operation, etc.

Active Publication Date: 2018-11-23
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the continuous update of production technology, the traditional laser cutting machine based on fixed pattern cutting is increasingly unable to meet the existing production needs
Existing laser cutting machines based on machine vision generally have the problems of matching with preset graphics, low recognition accuracy, strict requirements for recognizing ambient light sources, and complicated operations

Method used

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  • Machine vision cutting method applied to laser cutting machine
  • Machine vision cutting method applied to laser cutting machine
  • Machine vision cutting method applied to laser cutting machine

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Embodiment Construction

[0055] The present invention will be further described below in conjunction with drawings and embodiments.

[0056] According to the embodiment of complete implementation of the present invention as follows:

[0057] (1) Image preprocessing, image coordinate mapping, image shape gradient correction, white balance processing and exposure compensation operations are performed sequentially on the image.

[0058] (2) Image distortion correction specifically includes:

[0059] (1.1) Use a laser cutting machine to engrave an equilateral triangle grid pattern with a triangle side length of 5cm on the white plane material on the cutting platform. The specific implementation is as follows figure 1 shown;

[0060] (1.2) The imaging module used by the laser cutting machine adopts an industrial CCD camera.

[0061] First, the imaging module collects the calibration image m1 engraved by the laser cutting machine with the regular triangular grid pattern and the RGB image of the existing ...

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PUM

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Abstract

The invention discloses a machine vision cutting method applied to a laser cutting machine. The machine vision cutting method comprises an image distortion correction module, an image contour recognition module, a parameter optimization module based on supervised machine learning and a cutting path generation module; the image distortion correction module processes an acquired image to obtain an original image; the image contour recognition module performs contour recognition on the original image; the cutting path generation module generates a cutting path of the laser cutting machine according to a contour recognition result; and the parameter optimization module based on the supervised machine learning optimizes the image contour recognition module, so that the recognition contour extraction of the image contour recognition module is more accurate. The method of the invention has the advantages of being easy to operate, high in recognition precision, high in recognition speed and the like, can be adapted to a complex production environment, and improves the generality of the laser cutting machine.

Description

technical field [0001] The invention relates to the fields of machine vision and machine learning, in particular to a machine vision cutting method applied to a laser cutting machine. Background technique [0002] With the continuous update of production technology, the traditional laser cutting machine based on fixed pattern cutting is increasingly unable to meet the existing production needs. Existing laser cutting machines based on machine vision generally have the problems of matching with preset graphics, low recognition accuracy, strict requirements for recognizing ambient light sources, and complicated operations. The invention combines machine vision and machine learning technology to propose a new machine vision method applied to laser cutting machines. [0003] The present invention can realize accurate image contour recognition for materials with arbitrary patterns without preset graphics, generate cutting paths, and complete cutting of material patterns. Using ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/32G06K9/46G06K9/62
CPCG06V10/242G06V10/44G06F18/214
Inventor 李宇波邝昊泽魏兵华飞叶博涛
Owner ZHEJIANG UNIV
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