image processing image transforms such as radon fouriye

扇形束到平行束转换，可以通过调节不同参数得到不同的转换结果。-The fan beam to parallel beam conversion, conversion results by adjusting the different parameters.

图像处理,有效去除重建图像的畸变伪影,图像边缘信息很好地保留下来,使迭代算法实际应用于临床成为可能(function: P = fan2para(F,D) converts the fan-beam data F to the parallel-beam data P. D is the distance in pixels from the fan-beam vertex to the center of rotation that was used to obtain the projec