Package org.tensorflow.op.signal

Class Rfft2d

java.lang.Object

org.tensorflow.op.PrimitiveOp

org.tensorflow.op.signal.Rfft2d

All Implemented Interfaces:

Op, Operand<java.lang.Object>

@Operator(group="signal")
public final class Rfft2d
extends PrimitiveOp
implements Operand<java.lang.Object>

2D real-valued fast Fourier transform.

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

Since the DFT of a real signal is Hermitian-symmetric, `signal.Rfft2d` 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 `signal.Rfft2d` 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.

Field Summary

Fields inherited from class org.tensorflow.op.PrimitiveOp

operation

Method Summary

Modifier and Type	Method	Description
Output<java.lang.Object>	asOutput()	Returns the symbolic handle of a tensor.
static Rfft2d	create(Scope scope, Operand<java.lang.Float> input, Operand<java.lang.Integer> fftLength)	Factory method to create a class to wrap a new Rfft2d operation to the graph.
Output<?>	output()	A complex64 tensor of the same rank as `input`.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from class org.tensorflow.op.PrimitiveOp

equals, hashCode, toString

Method Detail

create

public static Rfft2d create(Scope scope,
                            Operand<java.lang.Float> input,
                            Operand<java.lang.Integer> fftLength)

Factory method to create a class to wrap a new Rfft2d operation to the graph.

Parameters:

scope - current graph scope

input - A float32 tensor.

fftLength - An int32 tensor of shape [2]. The FFT length for each dimension.

Returns:

a new instance of Rfft2d

output

public Output<?> output()

A complex64 tensor of the same rank as `input`. The inner-most 2 dimensions of `input` are replaced with their 2D Fourier transform. The inner-most dimension contains `fft_length / 2 + 1` unique frequency components.

asOutput

public Output<java.lang.Object> asOutput()

Description copied from interface: Operand

Returns the symbolic handle of a 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.

Specified by:

asOutput in interface Operand<java.lang.Object>

See Also:

OperationBuilder.addInput(Output)