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Low Cost Automatic Detecting of Weld Pool Image in Constant Current TIG Welding
Author(s): 
Pages: 25-28
Year: Issue:  6
Journal: TRANSACTIONS OF THE CHINA WELDING INSTITUTION

Keyword:  连续电流TIG焊熔池图像低成本自动化检测;
Abstract: 改进了普通CCD摄像机镜头,使物距、放大倍数的调节范围进一步扩大.通过试验和统计的方法,调整物距、光圈、快门等光学参数,增大景深,提高对比度,拍摄出了分辨率较高的熔池图像. 对大量的焊接熔池图像进行了分析,根据图像的特点,设计出不需要滤波的图像边缘检测算法,检测出了连续电流TIG焊接熔池的整个边缘.与激光频闪视觉检测仪拍摄的熔池图像进行了对比,结果表明该低成本自动化检测装置所拍摄的熔池图像也达到了较高的清晰度与对比度.
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