基于线形化算法的熔池三维形状提取  

Extraction of welding pool shape using linear approximation

作　　者：王继锋[1] 王文怡[1] 陈善本[1] 

机构地区：[1]上海交通大学材料科学与工程学院,上海200030

出　　处：《焊接学报》2007年第8期54-56,共3页Transactions of The China Welding Institution

基　　金：国家自然科学基金资助项目(50575144)

摘　　要：在自动化焊接过程中,焊接熔池形状是判断焊接质量的主要依据。熔池三维形状包含有更丰富的焊接质量信息,采用阴影恢复技术对熔池图像进行恢复。一种快速的线形近似求解方法被用来求解焊接反射图方程,得到了熔池高度迭代式。采用Kalman滤波的思想,完善了该算法实际执行过程中可能出现的问题。试验熔池图片验证了该算法是快速并且有效的。The welding bead shape is crucial for welding quality. Three-dimensional shape of the welding pool contain much information about quality. Thus, shape from shading technique was taken to reconstruct the three dimension shape of welding pool. Welding reflection map was established and was solved by using linear approximation, from which the depth iteration equation was obtained. It then presented the improved measure for this algorithm based on Kalman filter. Finally, the experiment validate that this algorithm is fast and effective.

关 键 词：阴影恢复算法 脉冲钨极氩弧焊 熔池三维模型 

分 类 号：TG409[金属学及工艺—焊接]