In order to achieve the accurate detection of butt weld center during automatic welding of thin plate,a detection method for thin plate butt welding detection based on active visual sensing was proposed.The interference of environmental light was eliminated through color segmentation and brightness segmentation of images collected by industrial camera.The image noise was eliminated by using contour detection and mask operation,and the central line of laser light stripes was extracted by using the gray gravity center method,and the first order differential method was used to achieve the detection of left and right boundaries and weld centers.For segregated defects in laser stripes,interruptions connection was carried out to improve the detection accuracy of the weld center.The results show that using the method can accurately detect the border and center position of the weld seam,and it can meet the automatic welding requirements of thin plate butt weld seam.
关键词
焊缝检测/视觉传感/焊缝中心检测/薄板对接焊
Key words
weld detection/version sensing/weld center detection/thin plate butt welding
维普
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