映射和重建 产生测试图像并显示 另一程序 利用radon函数和iradon函数构造一个简单图像的投影并重建图像

radon变换除了在处理二维三维的投影数据时重建算法的应用，在直线检测中有应用-In addition to radon transform processing data in 2D and 3D projection reconstruction algorithm applications, there are applications in line detection

基于matlab的平行束滤波反投影重建算法(Back projection reconstruction algorithm of parallel beam filter based on MATLAB)