A Wiener filtering based back project lgorithm for image reconstruction ion a

Jingjing MA Min ZHAO Liang JI

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A Wiener filtering based back project lgorithm for image reconstruction ion a

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- A Wiener filtering based back project lgorithm for image reconstruction ion a
- NUCLEAR TECHNIQUES Vol. 35, Issue 9, (2012)
- 作者机构：
  
  中国民航大学航空自动化学院
- 作者简介：
- 基金信息：
  
  国家自然科学基金青年基金(61102096);中国民航大学中央高校基金(ZXH2010C005)资助
- DOI：
  CLC： TP391.41
- Published：01 September 2012
- 稿件说明：
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[1]马敏,赵亮,姬晶晶.基于Wiener滤波的反投影图像重建算法[J].核技术,2012,35(09):675-679.

Jingjing MA Min ZHAO Liang JI. A Wiener filtering based back project lgorithm for image reconstruction ion a[J]. Nuclear techniques, 2012, 35(9): 675-679.
[1]马敏,赵亮,姬晶晶.基于Wiener滤波的反投影图像重建算法[J].核技术,2012,35(09):675-679. DOI：

Jingjing MA Min ZHAO Liang JI. A Wiener filtering based back project lgorithm for image reconstruction ion a[J]. Nuclear techniques, 2012, 35(9): 675-679. DOI：

摘要

CT是一种先进的成像技术

投影重建图像为关键技术之一

目前CT图像重建算法多采用滤波反投影针对投影数据不足所产生伪影的问题

经分析伪影产生的原因后

提出了一种基于Wiener滤波与反投算法。算法利用Wiener滤波对传统的滤波反投影图像重建算法进行改影图像重建算法相结合的新图像重建算法

该克服重建图像伪影。通过对典型流型进行实验仿真

证明改进后的算法对重建图像的质量有明进

能较好地显改善。

Abstract

In the context of computed tomography (CT)

a key techniques is the image reconstruction from projection data. The filtered back projection (FBP) algorithm is commonly used in image reconstruction. Based on cause analysis of the artifacts

we propose a new image reconstruction algorithm combining the Wiener filter and FBP algorithm. The conventional FBP image reconstruction algorithm is improved by adopting Wiener filter

and artifacts in the reconstructed images are obviously reduced. Experimental results of typical flow regimes show that the improved algorithm can effectively improve the image quality.

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