de.gsi.math.spectra.wavelet

Class FastWaveletTransform

java.lang.Object

de.gsi.math.spectra.wavelet.FastWaveletTransform

public final class FastWaveletTransform
extends Object

This is a very fast implementation of the Fast Wavelet Transform. It uses in-place computations for less memory usage. Data length should be a power of 2 a be at least of length 8. Handles boundaries by assuming periodicity. Ideal for image processing or processing large amount of data. Safety is minimal, so be careful!

Author:

Daniel Lemire

Constructor Summary

Constructors

Constructor and Description
FastWaveletTransform()

Method Summary

Modifier and Type	Method and Description
void	invTransform(double[] v)
static void	invTransform(double[] v, int n)
static int	mirror(int i, int n)
void	transform(double[] v)
static void	transform(double[] data, int n)

Methods inherited from class java.lang.Object

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

Constructor Detail

FastWaveletTransform

public FastWaveletTransform()

Method Detail

invTransform

public void invTransform(double[] v)

transform

public void transform(double[] v)

invTransform

public static void invTransform(double[] v,
                                int n)

mirror

public static int mirror(int i,
                         int n)

transform

public static void transform(double[] data,
                             int n)