CT重建算法中解析算法FBP的代码,分为三个文件，分别为主文件fbp和辅助文件。-FBP algorithm code in CT image reconstruction

CT重建滤波反投影BPF算法，虽然可以用MATLAB直接实现，但原理需要写开代码才能看到。这个是一步一步写出的，但速度慢。(Although the back projection BPF algorithm of CT reconstruction filtering can be directly implemented by MATLAB, the principle needs to be written code to see. It's written step by step, b