Subpixel accuracy for extracting groove center based on corner detection

作者：Liu, Suyi^*; Wang, Guorong; Shi, Yonghua

来源：China Welding, 2006, 15(3): 59-63.

• Corner detection
• Lagarange polynomial interpolation algorithm
• Laplacian of Gaussian (LOG) operator
• Polynomial interpolation
• Seam tracking
• Subpixel accuracy
• V groove center

Subpixel accuracy for V-groove center in robot welding is researched and a software measure to increase the accuracy of seam tracking by laser is presented.LOG( Laplacian of Gaussian ) operator is adopted to detect image edge.Vgroove center is extracted by corner detection of extremum curvature.Subpixel position is obtained by Lagarange polynomial interpolation algorithm.Experiment results show that the method is brief and applied, and is sufficient for the real time of robot welding by laser sensors.

• 出版日期2006-9
• 单位华南理工大学