数字射线图像缺陷的Canny算子边缘检测

The Defect Image Processing by Canny Operator for Digital Radiography in Frequency Dominant

摘要: 研究射线检测中缺陷影像频域增强处理后的Canny算子边缘检测处理。使用Matlab 7实现处理流程，对处理结果进行了分析。采用双阈值方法，通过滞后阈值化处理，可对Canny算子边缘检测的处理结果进行优化以提高可视性。实验证实，Canny算子边缘检测处理及优化技术可获得典型缺陷影像的边缘，可视性较好。

Abstract: Using the Canny operator to process the frequencydomain enhancement image by Matlab was presented. The processing results were optimized in dual threshold way by hysteretic threshold to improve the visibility. It was proved that the Canny edge detector processing could effectively detect the edge of the classical defects in digital radiography image. It was validated that the visibility could be improved greatly.