Abstract:

In two-dimensional tomography field,the biggest problem algebraic reconstruction technique (ART) algorithm faces is the large calculating quantity that causes its low reconstruction speed,for which an improved ART algorithm is proposed in this paper.It aims at getting good quality faster.All the transition solutions during each iteration process are recorded and their average value is the initial value of the next iteration.Experiment results indicate that the improved algorithm can get good quality with less iterations and has better quality than traditional algorithm.

Key words: two dimensional tomography;Algebraic reconstruction technique algorithm;peak signal to noise ratio;
reconstruction speed