摘要
针对直接反投影重建的伪迹现象,提出了一种新型射线反投影重建算法,该方法基于反投影数据的“求交”运算,不同于常规反投影相叠加方法,可以较好地克服图像部分伪迹,仿真结果证明了该方法的有效性。
In review of the 'pseudo-lines' in direct projection image reconstructions, a new image reconstruction algorithm is proposed in the paper purporting to solve problems of ray back projections. The algorithm is formulated on the basis of intersectional calculation aimed at obtaining ideal back projection data. It differs from conventional back projections of super-position method and can eliminate some 'pseudo-lines' well. Simulation results show the algorithm can be used for solutions of its kind to an ideal effectiveness.
出处
《中国民航学院学报》
2005年第2期19-21,共3页
Journal of Civil Aviation University of China
基金
中国民用航空学院科研基金项目(2004)
关键词
层析成像
图像重建
伪迹
反投影
tomography
image reconstruction
pseudo-lines
back projection
