2Parker Aerospace

In industrial radiograph inspection, it is an important step to extract welding region from the radiograph image to avoid processing of complex background. In this paper, a flaw map approach along with contrast adjustment is adopted for enhancing radiograph image processing according to the characteristics of weld radiography. Based on the intensity distribution characteristic of weld, a methodology of automated inspection of welding defects is proposed. The methodology of weld extraction, including cropping the ROI, is described. To demonstrate the effectiveness of the proposed approach, 258 weld radiographic images are examined. The results show that the proposed methodology is effective in extracting welding region and generating a flaw map with the inclusion of potential welding defects. 1