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4 不同扫描电压条件下的CT图像 |
Fig.4 CT images under scanning voltage of 90, 120 and 140 V (a, c, d) and their projection images after Fourier transform (b, d, f) |
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