冻土CT图像中环形伪影和射线束硬化伪影的成因及校正方法
陈世杰, 马巍, 李国玉

Ring artifact and beam hardening artifact in CT image of frozen soil: causes and correction methods
Shijie CHEN, Wei MA, Guoyu LI
图5 冻土CT图像中的射线束硬化伪影及中心剖面线CT值分布
Fig.5 Beam hardening artifacts in a CT image of frozen soil (a) and its CT number profile along the central section line (b)