util.wavelet
Class Scale

java.lang.Object
  util.wavelet.SimpleSignal
      util.wavelet.Signal
          util.wavelet.Scale

public class Scale
extends Signal

A wavelet scale containing wavelet coefficients.

Author:

John Talbot

Field Summary

static boolean	POSITIVE If true only positive features are detected.
protected int[]	structureLookupTable A lookup table for efficiently accessing the Structure at a given index, if -1 then no structure
List<Structure>	structures Structures in this level.

Constructor Summary

Scale(SimpleSignal signal, int scaleNumber)
Construct using an array of wavelet coefficients and an array of noise values encoded as an instance of signal.

Method Summary

void	add(SimpleSignal signal, int index) If this scale contains Structures which belong to a given WObject then add those wavelet coefficients to a given signal and return results in that signal.
int	getScaleNumber() Get the scale number.
Structure	getStructure(int position) Get the Structure at the given pixel position or null if none exists there.
List<Structure>	getStructures() Get the Structures.
float	getValue(int position, int wObjectIndex) Get the wavelet coefficient value at the given position and for the given WObject, zero otherwise.

Methods inherited from class util.wavelet.Signal

getNoise, getNoise, getNoiseMultiplier, isAboveNoise, isBelowNoise, setNoise, setNoise

Methods inherited from class util.wavelet.SimpleSignal

add, add, convolve, estimateNumberOfScales, getBoundaryCondition, getChirp, getDirac, getGaussianDeviate, getGaussianNoise, getScalingFunction, getSubset, getValue, getWavelet, multiply, multiply, multiply, multiply, setBoundaryCondition, setValue, size, square, square, subtract, subtract

Methods inherited from class java.lang.Object

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

Field Detail

structureLookupTable

protected int[] structureLookupTable

A lookup table for efficiently accessing the Structure at a given index, if -1 then no structure

structures

public List<Structure> structures

Structures in this level.

POSITIVE

public static final boolean POSITIVE

If true only positive features are detected.

See Also:

Constant Field Values

Constructor Detail

Scale

public Scale(SimpleSignal signal,
             int scaleNumber)

Construct using an array of wavelet coefficients and an array of noise values encoded as an instance of signal.

Parameters:

signal - a SimpleSignal

Method Detail

getStructure

public Structure getStructure(int position)

Get the Structure at the given pixel position or null if none exists there.

Parameters:

position - pixel position

Returns:

the Structure at the given position or null if none exists there

getStructures

public List<Structure> getStructures()

Get the Structures.

Returns:

a list of Structures found in this scale

getValue

public float getValue(int position,
                      int wObjectIndex)

Get the wavelet coefficient value at the given position and for the given WObject, zero otherwise. Precondition : 0 ≥ index ≤ size().

Parameters:

position - must be within the wavelet coefficients of this Scale

wObjectIndex - WObject index

Returns:

the wavelet coefficient value at the given position

add

public void add(SimpleSignal signal,
                int index)

If this scale contains Structures which belong to a given WObject then add those wavelet coefficients to a given signal and return results in that signal. Precondition: signal has the same size

Parameters:

signal - the signal to be added to this scale

index - the object index to

getScaleNumber

public int getScaleNumber()

Get the scale number. Higher numbers indicate smoother scales. Useful for checking purposes, such as verifying that a Structure is related to another structure plus or minus a scale number etc...

Returns:

the scale number (starts at 0)