Revisit of the Ramp Filter.
Revisit of the Ramp Filter.
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DOI:
10.1109/tns.2014.2363776
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发表时间:
2015-02
影响因子:
1.8
通讯作者:
Zeng GL
中科院分区:
文献类型:
--
作者:
Zeng GL
An important part of the filtered backprojection (FBP) algorithm is the ramp filter. This paper derives the discrete version of the ramp filter in the Fourier domain and studies the windowing effects. When a window function is used to control the noise, the image amplitude will be affected and reduced. A simple remedy is proposed to improve the image accuracy when a window function must be used.