A Method of weld Edge Extraction in the X-ray Linear Diode Arrays Real-time imaging

摘要：

The weld edge extraction could decrease computation, avoid complex background processing and reduce computing time,so improve the efficiency of detection for internal weld defections analysis of the Linear Diode Arrays real-time imaging. The adaptive median filtering is used to decrease noise for real-time weld image. Which the variance ratio of interclass and intraclass segmentation is applied to segment weld region by comparing with Sobel operator, Canny operator and iterative methods, Finally, the edge tracking is applied for the binary image, so weld image was extracted. Simulation results indicated that the adaptive median filtering effectively removes noise,and maintain the edge details of weld and defection image; the variance ratio of interclass and intraclass segmentation could accurately distinguished between the welded metal and the base metal;Edge tracking can get continuous weld image contours, finally weld image was accurately extracted according to the obtained results.

关键词： real-time imaging weld image The adaptive median filtering the variance ratio of interclass and intraclass segmentation edge tracking

作者: Guang CHEN Keqin DING Lihong LIANG

作者单位: China Special Equipment Inspection and Research Institute Building 2, Xi Yuan, He Ping Jie, Chao Yang District, Beijing 100013, China

会议类型: 国际会议

会议名称: 第十七届世界无损检测会议(17th World Conference on Nondestructive Testing)

会议地点: 上海

会议语种:英文

页码: 184-188

在线出版日期: 2008-10-25（万方平台首次上网日期，不代表论文的发表时间）