JSci.maths.wavelet.daubechies2
Class FastDaubechies2

java.lang.Object
  JSci.maths.wavelet.FWT
      JSci.maths.wavelet.daubechies2.FastDaubechies2

public final class FastDaubechies2
extends 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!

Field Summary

(package private) static float[]	scale
(package private) static float[]	wavelet

Constructor Summary

FastDaubechies2()

Method Summary

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

Field Detail

scale

static final float[] scale

wavelet

static final float[] wavelet

Constructor Detail

FastDaubechies2

public FastDaubechies2()

Method Detail

transform

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

transform

public void transform(float[] v)

Specified by:

transform in class FWT

invTransform

public void invTransform(float[] v)

Specified by:

invTransform in class FWT

invTransform

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