Module fft2d::slice

Fourier transform for 2D data such as images.

Functions

fft_2d

Compute the 2D Fourier transform of an image buffer.

fftshift

Shift the 4 quadrants of a Fourier transform to have all the low frequencies at the center of the image.

ifft_2d

Compute the inverse 2D Fourier transform to get back an image buffer.

ifftshift

Inverse operation of the quadrants shift performed by fftshift.