基于LabVIEW的核燃料组件图像倾斜处理技术研究
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摘要
提出了一种基于LabVIEW的高精度、高效率的燃料组件图像倾斜处理方法。对获取的倾斜的燃料组件图像进行ROI区域选取、图像掩膜、图像灰度化、图像二值化和高级形态学凸包等预处理,使得燃料组件图像变得更加清晰。使用搜索特征点的方法判断图像的倾斜方向,通过最小二乘法拟合直线得出图像的倾斜角,通过旋转矩阵对图像进行倾斜校正。由于此方法通过选取感兴趣的区域缩小了处理的图像面积,因此针对性更强、效率更高。实验结果表明该技术有效地校正了倾斜的燃料组件图像,并且提高了燃料组件棒间距测量的精度。
This paper presents a high-precision and high-efficiency fuel assembly image tilt processing method based on LabVIEW.The tilted fuel assembly image is preprocessed through selected ROI regions,image masking,image graying,binarization,and advanced morphological convex hulls,to make the nuclear fuel assembly image clearer.The method of searching for the feature points is used to judge the tilt direction of the image,and the tilt angle is obtained by fitting the straight line using the least squares method,and the tilt correction of the image is performed by use of the rotation matrix.Because this method narrows down the processed image area by selecting the ROI region of interest,it is more targeted and more efficient.The experimental results show that this technique effectively corrects the tilted fuel assembly image and improves the precision of the fuel assembly rod spacing measurement.
This paper presents a high-precision and high-efficiency fuel assembly image tilt processing method based on LabVIEW.The tilted fuel assembly image is preprocessed through selected ROI regions,image masking,image graying,binarization,and advanced morphological convex hulls,to make the nuclear fuel assembly image clearer.The method of searching for the feature points is used to judge the tilt direction of the image,and the tilt angle is obtained by fitting the straight line using the least squares method,and the tilt correction of the image is performed by use of the rotation matrix.Because this method narrows down the processed image area by selecting the ROI region of interest,it is more targeted and more efficient.The experimental results show that this technique effectively corrects the tilted fuel assembly image and improves the precision of the fuel assembly rod spacing measurement.
引文
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[2]茹俊,庞华,焦拥军,等.压水堆燃料组件辐照考验技术研究[J].核动力工程,2017,38(增刊1):175-177.
[3]任亮,李国云,江林志,等.压水堆燃料组件池边检查技术研究进展[J].科技导报,2015,33(18):91-95.
[4]Shin J C,Kim J I,Kwon J T.Poolside examination techniques applied for development of an advanced PWR fuel,PLUS7TH[C]//18th International Conference on Nuclear Engineering.US:American Society of Mechanical Engineers,2010:483-488.
[5]Park J Y,Kwon Y B,Choi J S,et al.KNFC fuel service technology development[C]//Proceedings of 18th International Conference on Structural Mechanics in Reactor Technology.Beijing:Chinese Society of Theoretacal and Applied Mechanics.2005:25-33.
[6]王倩文.一种快速准确的倾斜图像校正方法[J].机电工程技术,2017(增刊2):179-183.
[7]王辉,牟宏鑫,王嘉梅,等.一种文本图像倾斜校正的方法[J].云南民族大学学报(自然科学版),2010,19(3):232-234.
[8]曾凡锋,吴飞飞,肖珂,等.一种快速文本图像倾斜校正方法[J].计算机应用与软件,2015,32(4):181-185.
[9]张健生.CMOS图像传感器AOI设备中的应用[D].苏州:苏州大学,2011:20-23.
[10]周迪,夏哲雷.LabVIEW平台的文本图像倾斜校正方法[J].中国计量学院学报,2016,27(2):234-238.