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旋转中心随旋转角度变化的扇束重构算法
Reconstruction Algorithms for Fan-Beam With Centre of Rotation Varying With Change of the Rotation Angle
【摘要】 首先推导了旋转中心到扇束中心射线移动距离为旋转角度的函数时的精确滤波及投影重构算法 ;然后推导了这个函数为线性函数时的重构算法 ;最后用计算机模拟法证明了两个算法的正确性
【Abstract】 Firstly the accurate filter back projection reconstruction algorithm is derived when the moving distance between the rotation centre and the central line of fan beam is the function of the rotation angle. Then the reconstruction algorithm is derived when this function is the linear one. Finally the correctness of these two algorithms are proved by the computer simulation.
【关键词】 射线检测;
重构算法;
计算机模拟;
扇束投影;
【Key words】 Beam inspection Reconstruction algorithm Computer simulation Fan beam projection;
【Key words】 Beam inspection Reconstruction algorithm Computer simulation Fan beam projection;
- 【文献出处】 航空制造技术 ,Aeronautical Manufacturing Technology , 编辑部邮箱 ,2003年02期
- 【分类号】TP391.4
- 【下载频次】86