多层多道焊接结构光中心线提取
Multilayer multichannel welding structured light centerline extraction
-
摘要: 在对多层多道焊接视觉跟踪过程中，需要对结构光光条中心线上信息进行提取.要完成光条中心线提取需要解决光条形状复杂、光强度分布不均匀、焊豆或镜面反射等引起的结构光光条间断及环境噪声影响等问题.文中在研究已有中心线提取算法的基础上，提出了基于各向异性热扩散方程的结构光光条中心线提取算法.完成中心线提取后，选用已有算法对中心线上包含焊道信息的间断端点及高曲率角点进行检测，完成对结构光光条中心线上的特征提取.通过对文中提出的检测算法原理的分析及试验，试验结果证明该算法能够解决上述问题，同时与现有算法的比较可以看到文中在计算精度及速度上具有优势.Abstract: Several issues need to be solved in centerline extraction of structured light stripe, including complex shape of light stripe, uneven distribution of light intensity, gap of light strip caused by specular reflection or occlusion, and interference of environmental noise, etc. After investigating available centerline extraction algorithms, a novel centerline extraction algorithm is proposed based on anisotropic thermal diffusion equation. By corresponding pixels gray value to the temperature, the pixels with maximum values were calculated as centerline. The feasibility of solving the above issues with the proposed algorithm was verified by principle analysis and experiments. The comparison results show that the proposed algorithm has higher accuracy and efficiency.
-
-
[1] 张华军,张广军.厚板弧焊机器人自定义型焊道编排策略[J].焊接学报,2009,30(3):61-64.Zhang Huajun,Zhang Guangjun.Self-defining path layout strategy for thick plate arc welding robot[J].Transactions of the China welding institution,2009,30(3):61-64. [2] Chen Yuwen,Zhang Yulin,Xiang Linhong.Fingerprint Matching Algorithm Based on Similar Principle of Ridge Lines[J].Computer Science,2012,39(11A):406-409. [3] Wang Junqing,Zhang Weichuan,Wang Fuping.Corner detection algorithm using multi-chord curvature polynomial[J].Journal of Computer Applications,2013,33(8):2313-2316. [4] Fei Yudong,Zhong Lili.A method of line target detection in the 3D CT image[J].Application Research of Computers,2013,30(9):2855-2858. [5] Steger C.An unbiased detector of curvilinear structures[J].IEEE Transactions on Pattern Analysis andMachine Intelligence,1998,20(2):113-125. [6] Bazen A M,Gerez S H.Systematic methods for the computation of the directional fields and singular points of finger prints[J].IEEE Transactions on Pattern Analysis and Machine Intelligence,2002,24(7):905-919. [7] Benjamin B K,Kaleem S.Geometric heat equation and nonlinear diffusion of shapes and images[J].Computer Vision and Image Understanding,1994,64(3):113-120. [8] Qinghua Wu,Tao He,Tielin Shi.High-precision gasket thickness measuring and classifying system based on line-structured light[J].Eighth International Symposium on Precision Engineering Measurement and Instrumentation,2012,8759(8):87593U1-87593U7.
计量
- 文章访问数: 456
- HTML全文浏览量: 11
- PDF下载量: 241
下载:
