For radiographic inspection of welds in nuclear power plant pipeline welds,the digitization of negatives is the trend,in which the two-film rule requires the registration of the images of two digital negatives before they can be evaluated.In this study,the image registration method based on feature point matching is applied to the digital negative superposition,and the recall rate and accuracy of the algorithm are 98.59%and 97.68%,respectively,which verifies the effectiveness of the method,so as to realize the automatic registration of digital negative images,improve the consistency and quality of detection data,and further improve the accuracy of safety assessment in the process of periodic inspection of nuclear power plants.
关键词
射线检测/双片叠加/配准算法/特征点匹配
Key words
radiation detection/double overlay/registration algorithm/feature point matching
维普
万方数据