关于滤波反投影图像重建算法的研究

Research on image reconstruction algorithm of filtered back projection

CT是投影重建图像的应用技术之一,已广泛应用于自然科学的各领域中.目前CT图像重建算法多采用滤波反投影算法.本文在图像重建的理论基础上,利用滤波反投影算法的基本原理,对R-L,S-L,Hamming滤波函数和新滤波函数分别进行了计算机仿真对比实验.实验结果表明利用滤波反投影较好地重建图像,关键是滤波函数的选择.

CT is one of the application techniques of the image reconstruction,which has been widely used in various fields of natural science.The filtered back projection algorithm is mostly used in image reconstruction at present.On the basis of the theory of image reconstruction,the computer simulation and comparison experiments are carried out on the R-L,SL,Hamming filter function and the new filter function by the filtered back projection algorithm.The experimental results show that the image quality is better,and the selection of filter function is the key.