传统的滤波反投影(Filtered Back-Projection,FBP)重建方法虽然具有成像速度快的优点,但其重建图像却含有大量噪声,图像质量较差。
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构件3D-ICT的检测问题，讨论了一种仅需旋转检台偏置的大视场3D-ICT成像方法，推导了基于FDK原理的滤波反投影(filter back-projection，FBP)重建算法。计算机模拟和实验结果证明了该技术的正确性。分析表明，其水平方向的有效扫描视野比基于FDK的
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原理的滤波反投影 filter back-projection ; FBP
传统的滤波反投影 Filtered Back Projection ; FBP
采用传统的滤波反投影 Filtered Back Projection ; FBP
线的滤波反投影 Filtered backproiection ; FBP
常用的是滤波反投影法 filtered back projection ; FBP
提出的精确滤波反投影 Filtered Back Projection ; FBP
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.
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.
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