逆问题部分实现反投影算法和滤波反投影算法。
The reconstruction algorithms include back projection algorithm and filter back projection algorithm for inverse problem.
为了提高滤波反投影算法图像的重建效率，本文利用参数表的方法对程序作了优化，使重建速度提高了近100倍。
For the sake of the image reconstruction efficiency we shortened the reconstruction time almost 100 times by parameter table method.
传统的滤波反投影算法(FBP)要求完备的投影数据，而实际检测中往往由于客观原因无法获得完全的投影数据。
Traditional filtered backprojection (FBP) method required complete projection data, which were often difficult or even impossible to acquire for objective reasons.
因此提出了改进的偏折层析滤波反投影算法，数值模拟表明，改进算法在有效抑制倾斜现象的同时，对重建结果不会造成明显的失真。
Results show that the effect of projection noise on the reconstructed fields is represented by a slope function related to the filter used in deflection tomographic filtered back-projection algorithm.
该算法重建的图像比常用的滤波反投影和代数重建等算法得到的精度高。
The image reconstructed by this algorithm is better in the reconstruction accuracy than that reconstructed by the filtered backprojection and algebraic reconstruction techniques.
扇束工业CT系统普遍采用滤波反投影(FBP)重构算法。
Filter back projection (FBP) reconstruction algorithm is adopted by fan beam industrial ct systems.
介绍了由投影重建图像的基本原理，对扇束滤波反投影重建算法进行了分析，并针对该算法的特点提出了一种提高算法求解速度的方法。
In this paper, we propose a new algorithm based on sub-aperture and filtered back-projection algorithm to estimate the anisotropy of objects scattering centers in wide-aperture imaging.
介绍了由投影重建图像的基本原理，对扇束滤波反投影重建算法进行了分析，并针对该算法的特点提出了一种提高算法求解速度的方法。
In this paper, we propose a new algorithm based on sub-aperture and filtered back-projection algorithm to estimate the anisotropy of objects scattering centers in wide-aperture imaging.
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