math.jwave.transforms

Class FastWaveletTransform

java.lang.Object

math.jwave.transforms.BasicTransform

math.jwave.transforms.WaveletTransform

math.jwave.transforms.FastWaveletTransform

public class FastWaveletTransform
extends WaveletTransform

Base class for the forward and reverse Fast Wavelet Transform in 1-D, 2-D, and 3-D using a specified Wavelet by inheriting class.

Constructor Summary

Constructors

Constructor and Description
FastWaveletTransform(Wavelet wavelet) Constructor receiving a Wavelet object.
FastWaveletTransform(Wavelet wavelet, int steps) Constructor receiving a Wavelet object.

Method Summary

Modifier and Type	Method and Description
double[]	forward(double[] arrTime) Performs the 1-D forward transform for arrays of dim N from time domain to Hilbert domain for the given array using the Fast Wavelet Transform (FWT) algorithm.
double[]	reverse(double[] arrHilb) Performs the 1-D reverse transform for arrays of dim N from Hilbert domain to time domain for the given array using the Fast Wavelet Transform (FWT) algorithm and the selected wavelet.

Methods inherited from class math.jwave.transforms.BasicTransform

forward, forward, forward, reverse, reverse, reverse

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FastWaveletTransform

public FastWaveletTransform(Wavelet wavelet)

Constructor receiving a Wavelet object.

Parameters:

wavelet - object of type Wavelet; Haar02, Daub02, Coif06, ...

Throws:

JWaveException

FastWaveletTransform

public FastWaveletTransform(Wavelet wavelet,
                            int steps)

Constructor receiving a Wavelet object.

Parameters:

wavelet - object of type Wavelet; Haar02, Daub02, Coif06, ...

steps - how many steps the algorithm should perform

Throws:

JWaveException

Method Detail

forward

public double[] forward(double[] arrTime)

Performs the 1-D forward transform for arrays of dim N from time domain to Hilbert domain for the given array using the Fast Wavelet Transform (FWT) algorithm.

Specified by:

forward in class BasicTransform

Parameters:

arrTime - coefficients of 1-D time domain

Returns:

coefficients of 1-D frequency or Hilbert domain

See Also:

BasicTransform.forward(double[])

reverse

public double[] reverse(double[] arrHilb)

Performs the 1-D reverse transform for arrays of dim N from Hilbert domain to time domain for the given array using the Fast Wavelet Transform (FWT) algorithm and the selected wavelet.

Specified by:

reverse in class BasicTransform

Parameters:

arrHilb - coefficients of 1-D frequency or Hilbert domain

Returns:

coefficients of 1-D time domain

See Also:

BasicTransform.reverse(double[])