中文摘要：

针对焊缝缺陷X射线实时自动检测技术普遍存在误检率与漏检率高的问题，研制了钢管焊缝缺陷X射线实时自动检测系统。研究了采用波形分析法与背景消除法信息融合进行焊缝缺陷检测的方法，从而有效降低了误检率与漏检率。该系统已用于西气东输钢管焊缝缺陷X射线实时自动检测。

英文摘要：

Real-time automatic X-ray inspection technique has the advantage of good consistency and high automation, so it is fit for on-line inspection of long weld. However this technique is hard to be applied in practice due to high false alarm and missed detection rates. Aiming at this problem, the real-time X-ray automatic inspection system for weld defects in pipe was established. The information fusion was proposed in two defect segmentation methods of weld X-ray image et al, background subtraction and grey level wave analysis, thus the false alarm and missed detection rates were decreased greatly. This system was being used for steel pipe manufacture in the West- East natural gas transmission project.