Irfft2d

public final class Irfft2d

Inverse 2D real-valued fast Fourier transform.

Computes the inverse 2-dimensional discrete Fourier transform of a real-valued signal over the inner-most 2 dimensions of `input`.

The inner-most 2 dimensions of `input` are assumed to be the result of `RFFT2D`: The inner-most dimension contains the `fft_length / 2 + 1` unique components of the DFT of a real-valued signal. If `fft_length` is not provided, it is computed from the size of the inner-most 2 dimensions of `input`. If the FFT length used to compute `input` is odd, it should be provided since it cannot be inferred properly.

Along each axis `signal.Irfft2d` is computed on, if `fft_length` (or `fft_length / 2 + 1` for the inner-most dimension) is smaller than the corresponding dimension of `input`, the dimension is cropped. If it is larger, the dimension is padded with zeros.

Constants

String OP_NAME The name of this op, as known by TensorFlow core engine

Public Methods

Output <U>
asOutput ()
Returns the symbolic handle of the tensor.
static Irfft2d < TFloat32 >
create ( Scope scope, Operand <? extends TType > input, Operand < TInt32 > fftLength)
Factory method to create a class wrapping a new Irfft2d operation using default output types.
static <U extends TNumber > Irfft2d <U>
create ( Scope scope, Operand <? extends TType > input, Operand < TInt32 > fftLength, Class<U> Treal)
Factory method to create a class wrapping a new Irfft2d operation.
Output <U>
output ()
A float32 tensor of the same rank as `input`.

Inherited Methods

Constants

public static final String OP_NAME

The name of this op, as known by TensorFlow core engine

Constant Value: "IRFFT2D"

Public Methods

public Output <U> asOutput ()

Returns the symbolic handle of the tensor.

Inputs to TensorFlow operations are outputs of another TensorFlow operation. This method is used to obtain a symbolic handle that represents the computation of the input.

public static Irfft2d < TFloat32 > create ( Scope scope, Operand <? extends TType > input, Operand < TInt32 > fftLength)

Factory method to create a class wrapping a new Irfft2d operation using default output types.

Parameters
scope current scope
input A complex tensor.
fftLength An int32 tensor of shape [2]. The FFT length for each dimension.
Returns
  • a new instance of Irfft2d

public static Irfft2d <U> create ( Scope scope, Operand <? extends TType > input, Operand < TInt32 > fftLength, Class<U> Treal)

Factory method to create a class wrapping a new Irfft2d operation.

Parameters
scope current scope
input A complex tensor.
fftLength An int32 tensor of shape [2]. The FFT length for each dimension.
Returns
  • a new instance of Irfft2d

public Output <U> output ()

A float32 tensor of the same rank as `input`. The inner-most 2 dimensions of `input` are replaced with the `fft_length` samples of their inverse 2D Fourier transform.