介绍了作者自行研制的脉冲 TIG(Tungsten Inert Gas)焊接熔池几何参数计算机视觉检测系统 .该系统从硬件上将特殊采样时序与复合滤光措施相结合 ,减小电弧光的干扰 ,从软件上针对熔池区图像的特点 ,利用快速有效的处理算法 ,能够从正面实时检测出熔池重要几何参数 ,如熔池的最大宽度、半长、后部面积、后拖角等 ,为下一步焊接过程实时控制打下了良好基础 . This paper introduces a computer vision inspection system of welding pool geometric parameters of TIG (TIG) developed by the authors.The system combines special sampling timing and compound filtering measures to reduce the interference of arc light from the software According to the characteristics of the image of the weld pool area, the important and geometrical parameters of the weld pool, such as the maximum width, half length, rear area and trailing angle of the weld pool, can be detected from the front in real time using the fast and effective processing algorithm. Process real-time control laid a good foundation.