rosemaling

rosemaling

1. Seen from the simulation experiments,ROSEM is superior to OSEM in terms of convergence and image quality.

不仅加快了图像重建的收敛速度而且改善了重建图像的质量。

2. Relaxation parameters and smooth operations on pixels after each iteration step are introduced into the OSEM algorithm,forming Relaxed OSEM(ROSEM).

将松弛系数和迭代间像素值约束引入有序子集-最大似然期望算法中,构造出应用于发射CT中的ROSEM算法引入到透射式工业CT中。

3. Performances of ROSEM,CBP and ART are analyzed on both Sheep-Logan digital phantom and the ~(60)Co Container inspection system. ROSEM exceeds ART in both speed and image quality,but exhibits a slower speed than CBP.

针对ROSEM、代数迭代算法(ART)和卷积反投影算法(CBP),分别做了模拟实验和实际汽车CT检测以及集装箱CT检测实验,并分析比较了它们在60Co集装箱CT检测中的应用。