edu.ucla.stat.SOCR.games.wavelet
Class FastDaubechies2

java.lang.Object
  edu.ucla.stat.SOCR.games.wavelet.FastDaubechies2

All Implemented Interfaces:

JSci.maths.wavelet.FWT

public final class FastDaubechies2
extends java.lang.Object
implements JSci.maths.wavelet.FWT

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 4. Handles boundaries by assuming periodicity. Ideal for image processing or processing large amount of data. Uses floats for more performance. Safety is minimal, so be careful!

Author:

Daniel Lemire

Constructor Summary

FastDaubechies2()

Method Summary

void	invTransform(double[] v)
void	invTransform(float[] v)
static void	invTransform(float[] v, int last)
void	transform(double[] v)
void	transform(float[] v)
static void	transform(float[] v, int last)

Methods inherited from class java.lang.Object

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

Constructor Detail

FastDaubechies2

public FastDaubechies2()

Method Detail

transform

public void transform(double[] v)

Specified by:

transform in interface JSci.maths.wavelet.FWT

invTransform

public void invTransform(double[] v)

Specified by:

invTransform in interface JSci.maths.wavelet.FWT

transform

public static void transform(float[] v,
                             int last)

transform

public void transform(float[] v)

invTransform

public void invTransform(float[] v)

invTransform

public static void invTransform(float[] v,
                                int last)