摘要
为研究快中子照相空间分辨率和反差灵敏度对细节灵敏度技术指标的影响,实验采用控制变量对照方法,加工了相同深度不同孔径和相同孔径不同深度的聚乙烯和铅样品,得到了不同条件下快中子照相照片,经过图像处理,分析得出细节灵敏度受空间分辨率和反差灵敏度综合影响,当孔径较小时,空间分辨率起主要作用;当孔径较大时反差灵敏度起主要作用,最后给出了细节灵敏度的初步参考结论。
Background： Detail sensitivity is an important technical indicator in the fast neutron radiography. Purpose： The spatial resolution and contrast sensitivity have important effects on the fast neutron radiography. Methods： Using the control variable methods, we process the different depth and diameter aperture samples of the polyethylene and Pb. Results： Many fast photographic images are obtained under different conditions. Conclusion： Through digital image processing, the preliminary relationship between the detail sensitivity with spatial resolution and contrast sensitivity were given. When the diameter is small, spatial resolution plays an important role in the detail sensitivity; however, contrast sensitivity plays an important part when the diameter is bigger. At last, a preliminary reference conclusion about detail sensitivity is given.
出处
《核技术》
CAS
CSCD
北大核心
2015年第8期6-10,共5页
Nuclear Techniques
基金
瞬发γ射线法测量中子非弹性截面实验方法研究(No.11375275)资助
关键词
快中子照相
细节灵敏度
空间分辨率
反差灵敏度
图像处理
Fast neutron radiography, Detail sensitivity, Spatial resolution, Contrast sensitivity, Image processing
