Manual calculation of fourier and inverse fourier transform

版本 1.0.1 (1.5 KB) 作者: Mustafa Rifat

You can use this code to manually find fourier transform and inverse fourier transform (without using fft and ifft by matlab) for both 1D/2D

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更新时间 2021/11/5

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For the Fourier Transformation:

x is the arbitrary vector that you can set.

x_fourier is the fourier transform by matlab function fft.

A is the fourier transform by manual calculation/DFT algorithm. A will match with x_fourier.

Similarly, y is the arbitrary matrix that you can set.

y_fourier is the fourier transform by matlab function fft2.

B is the fourier transform by manual calculation/DFT algorithm. B will match with y_fourier.

For the Inverse Fourier Transformation:

Inverse_A and inverse_B are the inverse fourier transformation, calculated manually for 1D and 2D, respectively. They should match with x and y, respectively.

引用格式

Mustafa Rifat (2024). Manual calculation of fourier and inverse fourier transform (https://www.mathworks.com/matlabcentral/fileexchange/101574-manual-calculation-of-fourier-and-inverse-fourier-transform), MATLAB Central File Exchange. 检索来源 2024/7/27.