Numerical removal of ring artifacts in microtomography
Numerical removal of ring artifacts in microtomography
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DOI：
10.1063/1.1149043
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发表时间：
1998-08-01
影响因子：
1.6
通讯作者：
Raven, C
中科院分区：
文献类型：
--
作者：
Raven, C
有缺陷和不充分校准的探测器元件在显微断层成像图像重建中引入环形或半圆形伪影。提出了一种计算高效的数字滤波器，它利用记录的正弦图形的傅里叶变换中环形伪影的特殊外观来抑制这些缺陷。用高能同步辐射同相衬度(轮廓)模式获得的实验数据验证了该滤波器的性能。(C)1998年美国物理研究所。
Defective and insufficient calibrated detector elements introduce ring or half-circle artifacts in microtomographic image reconstructions. A computationally efficient numerical filter is presented which suppresses these defects by taking advantage of the particular appearance of ring artifacts in the Fourier transforms of the recorded sinograms. The performance of the filter is demonstrated on experimental data taken with high-energy synchrotron radiation in-phase-contrast (outline) mode. (C) 1998 American Institute of Physics.