A Gapless Weld Seam Recognition Method and System Based on a Line Scan Camera

Abstract

The invention discloses a line array camera-based gapless weld identification method and its system, comprising the following steps: acquiring image information of a weldment through a line array camera; performing noise reduction processing on the image information to obtain preprocessing information; The preprocessing information is screened to obtain candidate information; the wrong position information in the candidate information is removed to obtain weld information; the weld information is stitched together to obtain the weld trajectory, and the welding torch is controlled according to the weld trajectory to perform welding operations. By denoising and filtering the image information, the amount of information in the image information can be effectively reduced, a large amount of information redundancy can be avoided, a large amount of data calculation can be reduced, and the processing speed can be improved; by removing the wrong position in the candidate information information, can quickly delete the wrong position information in the candidate information, and ensure the accuracy of gapless weld recognition.

Description

A method and system for gapless weld recognition based on line scan camera technical field The present invention relates to welding technology field, especially a kind of gapless welding seam identification method based on line scan camera and the method thereof system. Background technique As a kind of non-contact sensor, visual sensor has the advantages of high sensitivity, good real-time performance, and is not easily disturbed. Therefore, vision sensors are widely used in welding seam recognition and other fields. Most of the existing vision-based weld identification methods Using laser vision to identify welds, this method requires line laser stripes to irradiate the surface of the workpiece and deform, Using the computer, the deformation of the laser stripe is converted into the height information of the weldment surface, and then the position of the weld is identified. But for no In the butt weld of the gap, the line laser stripe will not deform obviously ...

AI Technical Summary

Problems solved by technology

But for butt welds without gaps, the line laser stripes irradiate the surface of the workpiece without obvious deformation, so the laser vision method cannot identify extremely narrow gaps and gapless welds

[0003] In addition, part of the existing weld recognition system uses an area array camera to collect the surface image information of the weldment. Although the collected pictures contain a lot of information, most of them are useless information, resulting in a large amount of data redundancy. lead to lower processing efficiency

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