摘要
根据散射光成像原理,采用大小两个视场来获取不同精度的暗背景下的亮疵病图像,设计了完整的数字化表面疵病检测系统。该系统采用多区域自适应阈值分割算法对图像进行分割,然后采用基于等价归并标记方法快速提取疵病的特征参数,最后利用BP神经网络对疵病进行分类。实验结果表明该方法既满足实时性需求,又取得了较好的分类检测效果。
Based on the light defect images against the dark background in a scattering imaging system, a digital detection system of surface defects for large aperture optical elements has been presented. In the system, the image is segmented by a multiarea self-adaptive threshold segmentation method, then a pixel labeling method based on replacing arrays is adopted to extract defect features quickly, and at last the defects are classified through back-propagation neural networks. Experiment results show that the system can achieve real time detection and classification.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2009年第7期1032-1036,共5页
High Power Laser and Particle Beams
基金
国家自然科学基金项目(10676029
10776028)
四川省教育厅重点项目(2006C074
2006C075)