It designs and realizes a set of laser vision guided automatic seam tracking system, including overall system structure and key algorithms. A laser vision sensor is installed at the end of an industrial robot. Wavelet transform is used to filter image noise and improved Steger algorithm and Hough transform method are applied to extract the laser stripe center line. Then the position of welding seam is located. A strategy of dual queues is put forward to control the movement of the manipulator, and a series ...