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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.
Returns | |
---|---|
A Tensor of type Tcomplex .
|