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The Fourier Transform transforms a function of space into a function of frequency. Considering a function ##f\left(x, y\right)##, the Fourier Transform of such a function is ##\mathcal{F}\left\{f\left(x, y\right)\right\} = F\left(p, q\right)##, where ##p## and ##q## are the spatial frequencies.
In numerical simulations, the function ##f## can easily be transformed by using an algorithm (built-in in the software). However, I am concerned on acquiring the spatial frequencies ##p## and ##q##. Is there a way to do it?
Thank you in advance.
In numerical simulations, the function ##f## can easily be transformed by using an algorithm (built-in in the software). However, I am concerned on acquiring the spatial frequencies ##p## and ##q##. Is there a way to do it?
Thank you in advance.