摘要
本文提出一种新的X CT截断投影数据图像重建方法 .本文的方法是从采集到的X CT有限角截断投影数据中提取用于重建图像的特征信息 ,并用这些特征信息构造截断奇异函数 ,再由这些截断奇异函数的线性泛函来重构X CT图像 ,达到消除X CT有限角投影数据图像重建中的截断伪影之目的 .实际和模拟结果都表明这种方法效果高于现有方法 .
In this paper,we present a new method on X-CT image reconstruction from finite angle projections data.In this way, firstly characteristic parameters are extrac ted from X-CT finite angle project data,then some truncated singularity functi ons are constructed using those characteristic parameter,and finally X-CT image s are reconstructed by those truncated singularity functions.Thus non truncated artifacts X-CT image from finite angle project data can be gained.Experimental and simulated results show that this method gives much better reconstructed ima ge than available methods.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2000年第7期70-73,共4页
Acta Electronica Sinica
基金
国家自然科学基金!(No.39870 2 1 1和No.39970 2 1 9)
