摘要
讨论二阶导数过零边缘检测方法。针对红外热图象的灰度特性 ,提出了窄范围二阶导数过零边缘检测用于焊接缺陷的边缘提取 。
Zero crossing edge detection method was analyzed. In view of the properties of infrared thermal images, narrow range zero crossing edge detection method was applied to detect the edges of welding flaws and good results were obtained.
出处
《无损检测》
2000年第7期291-293,共3页
Nondestructive Testing
