红外无损检测中缺陷边缘信息的自动提取  

AUTOMATIC EXTRACTION OF FLAW EDGE INFORMATION IN INFRARED NONDESTRUCTIVE TESTING

作　　者：任彬[1] 

机构地区：[1]安徽大学,合肥230039

出　　处：《无损检测》2000年第7期291-293,共3页Nondestructive Testing

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.

关 键 词：焊接缺陷 红外无损检测 二阶导数过零 边缘检测 

分 类 号：TG441.7[金属学及工艺—焊接] TP391.41[自动化与计算机技术—计算机应用技术]