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中文摘要：
为直观监测GMAW焊接熔滴过渡形式和熔滴大小,建立了熔滴过渡高速摄像系统。详述了背光光源选择、光路设计以及摄像装置调试等内容,并以高速摄像拍摄的熔滴过渡视频截图为基础,运用CANNY图像处理算法,结合局部属性函数,通过MATLAB软件编程实现对熔滴的边缘轮廓提取,并对提取的熔滴轮廓特征值进行标记,获得了熔滴尺寸特征的精确信息,其结论对GMAW焊接熔滴实际尺寸的精确计算和进一步熔滴过渡精确控制奠定了基础。
英文摘要：
In order to monitor the GMAW droplet transfer form and droplet size, a high-speed camera system for droplet trans- fer is established, and the backlight source selection, optical design and image pickup device debugging are described , etc. Based on the droplet transfer video screenshot image, using CANNY image processing algorithm, combined with local attribute function, the edge contour of droplet is extracted through MATLAB software programming, and the droplet profile feature val- ue is marked, and then the accurate droplet size characteristics information is obtained. This conclusion makes a good founda- tion for accurate calculation of GMAW droplet size and further droplet transfer control.
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