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fft
- 傅里叶变换（FFT）的C++/C原码。 设置参数isign=+1为正变换，设置参数isign=-1为反变换。-Fourier Transform (FFT) of the C++/C source. Setting parameters isign =+1 for the transformation, setting parameters isign =- 1 for the inverse transform.
Assignment_3
- * Frequency domain filtering -1. Discrete Fourier Transform Write a C++ function for each of following: (a) Multiply the input image by (-1)x+y to center the transform for filtering. (b) Compute the two-dimensional discrete F
C
- 用C语言实现的离散傅立叶变换以及离散傅立叶逆变换，附带原始公式。-C language Discrete Fourier Transform and Discrete Fourier inverse transform, with the original formula.
DIT-FFT
- 快速傅里叶变换的算法，基于c语言，有正运算和逆运算-Fast Fourier transform algorithm, based on the C language, positive operation and the inverse
FFT_IFFT
- 该程序是基于c语言的快速傅里叶变换程序，也可以计算反傅里叶变换-The program is based on the fast Fourier transform c language program can also calculate the inverse Fourier transform
matlab+c
- 二维图像的投影和图像重建，直接傅里叶反变换法，先反投影后滤波，先滤波后反投影，卷积反投影(Two dimensional image projection and image reconstruction, direct Fourier inverse method, first backprojection, after filtering, first filter, back projection, convolution back projection)