In this paper, Infrared heat wave image processed by using several typical algorithms of edge detection, from which we conclude that edge detection of defect under the surface of the material is visualized and can be regarded as a reference in NDT.

• 本文通过几种经典的边缘检测算子对热波图像的处理，表明识别缺陷边缘信息直观、可视化程度高，可作为实验结果的参考依据。