tf.signal.rfft3d

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3D real-valued fast Fourier transform.

tf.signal.rfft3d(
    input_tensor, fft_length=None, name=None
)

Computes the 3-dimensional discrete Fourier transform of a real-valued signal over the inner-most 3 dimensions of input.

Since the DFT of a real signal is Hermitian-symmetric, RFFT3D only returns the fft_length / 2 + 1 unique components of the FFT for the inner-most dimension of output: the zero-frequency term, followed by the fft_length / 2 positive-frequency terms.

Along each axis RFFT3D is computed on, if fft_length is smaller than the corresponding dimension of input, the dimension is cropped. If it is larger, the dimension is padded with zeros.

Args:

Returns:

A Tensor of type Tcomplex.