FloatSWT Class

The stationary wavelet transform (SWT) is an advanced development of the discrete wavelet transfrom (DWT). The DWT lacks signal translation-invariance. By using an up and down sampling strategy, often refered to by its french name of "algorithme à trous", the SWT gains translation-invariance.

Inheritance Hierarchy

SystemObject
CenterSpace.NMath.CoreDiscreteWaveletTransform
CenterSpace.NMath.CoreFloatSWT

Namespace: CenterSpace.NMath.Core
Assembly: NMath (in NMath.dll) Version: 7.4

Syntax

C++

Copy

[SerializableAttribute]
public class FloatSWT : DiscreteWaveletTransform, ICloneable

<SerializableAttribute>
Public Class FloatSWT
	Inherits DiscreteWaveletTransform
	Implements ICloneable

[SerializableAttribute]
public ref class FloatSWT : public DiscreteWaveletTransform, 
	ICloneable

[<SerializableAttribute>]
type FloatSWT =  
    class
        inherit DiscreteWaveletTransform
        interface ICloneable
    end

The FloatSWT type exposes the following members.

Constructors

	Name	Description
	FloatSWT(FloatSWT)	Creates a deep copy of this discrete wavelet transform object.
	FloatSWT(FloatWavelet)	Creates a discrete stationary wavelet transform class using the given wavelet. Set the Signal property before decomposing the signal with the SWT.
	FloatSWT(Single, FloatWavelet)	Creates a discrete stationary wavelet transform class using the given wavelet.

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Properties

	Name	Description
	mode	The current wavelet signal edge management mode. (Inherited from DiscreteWaveletTransform.)
	Signal	Gets and Sets the signal data to be transformed.
	Wavelet	The assigned wavelet.

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Methods

	Name	Description
	Clone	Returns a deep copy of this object.
	ComputeThreshold	Finds a single threshold for a given thresholding method and decomposition level. (Inherited from DiscreteWaveletTransform.)
	CurrentDecompLevel	Provides the current maximum level to which this signal has been decomposed.
	DecompLength	Provides the length of the DWT approximation and detail coefficient vectors. (Inherited from DiscreteWaveletTransform.)
	Decompose	Decompose the signal into approximation and details with the SWT.
	MaximumDecompLevel	Provides the maximum number of DWT decompositions possible based on the signal and wavelet lengths.
	Reconstruct	A complete multi-level discrete wavelet reconstruction. A signal decomposition must be first completed.
	WaveletCoefficients	Provides access to the details and approximation vectors. All details and approximation vectors are the same length with a SWT signal decomposition.

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Fields

	Name	Description
	mode_	The current mode of signal edge management. (Inherited from DiscreteWaveletTransform.)
	wavelet_	The associated wavelet. (Inherited from DiscreteWaveletTransform.)

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Remarks

See for more details: "The Discrete Wavelet Transform: Wedding the A Trous and Mallat Algorithms", by Mark J. Shensa

Reference

CenterSpace.NMath.Core Namespace