The FTARRAY structure contains information about the complex 2D array that will hold the frequency components of the image.
FTARRAY structure size. Should be set to sizeof(FTARRAY).
2D array width in pixels.
2D array height in pixels.
The 2D data array. Note that, although only one element is declared in the array, the array contains
uHeight elements. The frequency component for the pixel (row, col) is acxData[row *
uWidth + col].
The structure is used only by the Fourier Transform functions:
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