基于联合平行投影迭代的叠栅层析重建

描述了一种新的叠栅层析代数迭代模型,并针对传统代数迭代法中的垂直投影算法收敛速度较慢的问题,结合新模型提出了一种改进了的平行投影重建算法.用该算法进行了数值模拟重建,结果表明：与叠栅层析中的变换类算法相比,对非完全数据问题,新算法具有有效结合先验知识进行重建的能力；与传统的垂直投影算法相比,新算法能在保证重建准确度的前提下大幅度的提高收敛速度.

Moiré Tomography Based on Simultaneous Parallel Projection

A novel algebraic iterative model was described for moiré tomography and a modified parallel projection algorithm combined with the novel model was proposed to solve the problem of poor iterative convergent quality of the vertical projection algorithm which has been widely used in traditional algebraic iterative algorithms.The novel algorithm has been demonstrated by numerical experiments.Results show that compared with transform algorithms of moiré tomography,to the question of incomplete data reconstructions,the novel algorithm has strong abilities to combine iteration processes with priori information.And compared with traditional vertical projection algorithms,the novel simultaneous parallel projection can greatly accelerate the iterative process without losses of accuracy.