用mATLAB编写的快速中值滤波程序，采用 3x3 窗口，基于基数排序的快速去噪FNR-Fast median filtering with mATLAB written procedures, using 3x3 window, based on the fast radix sort denoising FNR

FFT 基2变换源程序，matlab测试与系统函数变换结果一致-Radix-2 FFT transform source code, matlab test results are consistent with the system function transformation