基于图像光流法拼接的燃料组件关键几何尺寸的快速检测方法A Fuel Assembly Deformation Fast Detection Method based on Image Optical-flow Stitching
杨斌,黄琪寅,郭冉,耿贺辉,程育奇,陈锐,王刚,李文龙
摘要(Abstract):
核电燃料组件是核反应堆的核心部件,定期对燃料组件关键几何尺寸(燃料组件长度、燃料棒直径、燃料棒间距等)进行检测对保证反应堆的安全运行至关重要。为实现燃料组件关键几何尺寸的快速精确检测,本文研究适用于弱特征物体的光流全景拼接算法,采用交叉检验与背景滤除的方法优化光流场,并针对燃料组件成排均布的结构特点,提出基于空间扫略的燃料组件边缘特征精确提取算法,实现燃料组件关键几何尺寸(长度、直径、间距)的快速检测。实验结果表明,尺寸检测精度优于0.2 mm,组件长度检测误差1.25%,检测时间4.5 min,满足核电站燃料组件现场检测需求(长度检测误差<3%、检测时间<10 min)。
关键词(KeyWords): 核电燃料组件;几何尺寸检测;光流法;图像拼接;边缘特征提取
基金项目(Foundation): 湖北省重点研发计划(2021BAA054);; 国家自然科学基金资助项目(52075203,52188102);; 武汉市科技计划-应用基础前沿专项(2020010601012173)
作者(Author): 杨斌,黄琪寅,郭冉,耿贺辉,程育奇,陈锐,王刚,李文龙
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