简化的SART 复杂一些的SART 观察公式,SIRT其实和SART没有太多区别,其核心思想相同,只是投影距离不同(差个2)。SIRT在投影的基础上更进一步,计算了起始点x0在所有超平面的镜像,然后还是求平均。SIRT保留了SART的优点,并且比SART快一点点。 简化的SIRT 复杂的SIRT 最后把ART,SART和SIRT放一起,同样的起点,同样的迭代...
SART(Simultaneous Algebraic Reconstruction Technique): SART 是一种递归算法,采用逐步更新的方式来同时重建图像。它通过后验校正和数据一致性来优化图像重建结果。 SIRT(Simultaneous Iterative Reconstruction Technique): SIRT 则是一种单步迭代的重建方法,通过最小化重建图像与原始投影数据之间的差异来得到重建图像。 通过...
Hi everyone, I have an question about the iteration numbers of SART algorithm, could you explain for me? thank you very much. the iteration numbers of SART must be the multiple of the projection number? like the example of the "SART Algorithm" (https://astra-toolbox.com/docs/algs/SART...
The compare of reconstruction performance between SIRT, SART, MAP-EM and Iterative FBP (the image size is 512 × 512 and the angle interval is 0.5°).Hongli, ShiShuqian, LuoZhi, YangGeming, Wu
We made comparison between analytical reconstruction techniques: Back Projection (BP) and Filtered Back Projection (FBP) and iterative reconstruction techniques: Simultaneous Algebraic Reconstruction Technique (SART) and Simultaneous Iterative Reconstruction Technique (SIRT); the simulation was performed using ...