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Subpixel accuracy for extracting groove center based on corner detection

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【Author】 Liu Suyi, Wang Guorong and Shi Yonghua, College of Mechanical Engineering, South China University of Technology, Guangzhou, 510640.

【机构】 College of Mechanical Engineering South China University of Technology； College of Mechanical Engineering South China University of Technology； Guangzhou 510640；

【Abstract】 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.V-groove 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.更多还原

【关键词】 edge detection； LOG operator； corner detection； subpixel； polynomial interpolation；
【Key words】 edge detection； LOG operator； corner detection； subpixel； polynomial interpolation；

【基金】 This work is financially supported by National Nature Science Foundation of China (Grant No. 50175027).

【文献出处】 China Welding ,中国焊接(英文版) , 编辑部邮箱 ,2006年03期

【分类号】TG439.9
【被引频次】3
【下载频次】54

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