基于BM3D算法的快中子图像降噪方法  

Fast Neutron Image Denoising Method Based on BM3D Algorithm

作　　者：俞汪涛 许鹏 鲍杰[2] 周满 YU Wang-tao;XU Peng;BAO Jie;ZHOU Man(Nuclear Engineering College,Rocket Force University of Engineering,Xi'an 710025,China;China Institute of Atomic Energy,Beijing 102413,China)

机构地区：[1]火箭军工程大学核工程学院,西安710025 [2]中国原子能科学研究院,北京102413

出　　处：《核电子学与探测技术》2023年第2期369-375,共7页Nuclear Electronics & Detection Technology

摘　　要：在快中子照相过程中,由于受到各种因素影响,快中子图像严重降质,呈现大量噪声,不利于无损检测和后续的定量分析。通过噪声分析得出了快中子图像的噪声统计分布符合高斯噪声模型,探讨了将BM3D算法应用到快中子图像降噪处理的方法。实验结果表明,BM3D算法不仅能够有效滤除快中子图像的噪声,而且保护了图像的细节和边缘信息,可为快中子图像的降噪处理提供参考。In the process of fast neutron radiography,due to the influence of various factors,the image quality of fast neutron is seriously degraded and a lot of noise is presented,which is not conducive to nondestructive testing and subsequent quantitative analysis.In this experiment,it is concluded that the statistical distribution of noise in fast neutron image conforms to gaussian noise model through noise analysis,and the method of applying BM3D algorithm to fast neutron image processing is discussed.The experimental results show that the BM3D algorithm can not only effectively filter out the noise of the fast neutron image,but also protect the details and edge information of the image,which can provide a reference for the noise reduction processing of the fast neutron image.

关 键 词：快中子照相 无损检测 高斯噪声 BM3D算法 

分 类 号：O571.523[理学—粒子物理与原子核物理]