java.lang.Object
- java.lang.Thread
- - gov.nih.mipav.model.algorithms.AlgorithmBase
  - - gov.nih.mipav.model.algorithms.AlgorithmPhaseCongruency

All Implemented Interfaces:

java.awt.event.ActionListener, java.awt.event.WindowListener, java.lang.Runnable, java.util.EventListener
```
public class AlgorithmPhaseCongruency
extends AlgorithmBase
```
Ported from Peter Kovesi's MATLAB code for Phase Congruency Available from: http://www.csse.uwa.edu.au/~pk/research/matlabfns/PhaseCongruency/phasecong3.m and: http://www.csse.uwa.edu.au/~pk/research/matlabfns/FrequencyFilt/lowpassfilter.m in reference to the method lowpassFilter(); % References: % % Peter Kovesi, "Image Features From Phase Congruency". Videre: A % Journal of Computer Vision Research. MIT Press. Volume 1, Number 3, % Summer 1999 http://mitpress.mit.edu/e-journals/Videre/001/v13.html % % Peter Kovesi, "Phase Congruency Detects Corners and % Edges". Proceedings DICTA 2003, Sydney Dec 10-12 % Copyright (c) 1996-2010 Peter Kovesi % Centre for Exploration Targeting % The University of Western Australia % peter.kovesi at uwa edu au % % Permission is hereby granted, free of charge, to any person obtaining a copy % of this software and associated documentation files (the "Software"), to deal % in the Software without restriction, subject to the following conditions: % % The above copyright notice and this permission notice shall be included in % all copies or substantial portions of the Software. % % The Software is provided "as is", without warranty of any kind.

Nested Class Summary
- Nested classes/interfaces inherited from class java.lang.Thread
  java.lang.Thread.State, java.lang.Thread.UncaughtExceptionHandler

Field Summary

Fields
Modifier and Type	Field	Description
`private double`	`cutOff`
`private double`	`epsilon`
`private double[]`	`ft`
`private int`	`g`
`private int`	`height`
`private double`	`k`
`private int`	`length`
`private double[]`	`m`
`private double[]`	`M`
`private int`	`minWaveLength`
`private double`	`mult`
`private int`	`noiseMethod`
`private int`	`norient`
`private int`	`nscale`
`private double[]`	`or`
`private double`	`sigmaOnf`
`private double`	`T`
`private int`	`width`

Fields inherited from class gov.nih.mipav.model.algorithms.AlgorithmBase
destFlag, destImage, image25D, mask, maxProgressValue, minProgressValue, multiThreadingEnabled, nthreads, progress, progressModulus, progressStep, runningInSeparateThread, separable, srcImage, threadStopped

Fields inherited from class java.lang.Thread
MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors
Constructor Description

AlgorithmPhaseCongruency(ModelImage src)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`finalize()`	Calls garbage collector to release system resources.
`private double`	`findMedian(double[] array)`
`double[]`	`getCorners()`
`double[]`	`getEdges()`
`double[]`	`getFeatureType()`
`double[]`	`getOrientations()`
`private double[]`	`ifftShift(double[] array)`
`private double[]`	`lowpassFilter(int n)`
`private double`	`rayleighmode(double[] array)`
`void`	`runAlgorithm()`	Actually runs the algorithm.
`void`	`setArguments(int _nscale, int _norient, int _minWaveLength, double _mult, double _sigmaOnf, double _k, double _cutOff, int _g, int _noiseMethod)`	% Arguments: % Default values Description % % nscale 4 - Number of wavelet scales, try values 3-6 % norient 6 - Number of filter orientations

Methods inherited from class gov.nih.mipav.model.algorithms.AlgorithmBase
actionPerformed, addListener, addProgressChangeListener, calculateImageSize, calculatePrincipleAxis, computeElapsedTime, computeElapsedTime, convertIntoFloat, delinkProgressToAlgorithm, delinkProgressToAlgorithmMulti, displayError, errorCleanUp, fireProgressStateChanged, fireProgressStateChanged, fireProgressStateChanged, fireProgressStateChanged, fireProgressStateChanged, generateProgressValues, getDestImage, getElapsedTime, getMask, getMaxProgressValue, getMinProgressValue, getNumberOfThreads, getProgress, getProgressChangeListener, getProgressChangeListeners, getProgressModulus, getProgressStep, getProgressValues, getSrcImage, isCompleted, isImage25D, isMultiThreadingEnabled, isRunningInSeparateThread, isThreadStopped, linkProgressToAlgorithm, linkProgressToAlgorithm, makeProgress, notifyListeners, removeListener, removeProgressChangeListener, run, setCompleted, setImage25D, setMask, setMaxProgressValue, setMinProgressValue, setMultiThreadingEnabled, setNumberOfThreads, setProgress, setProgressModulus, setProgressStep, setProgressValues, setProgressValues, setRunningInSeparateThread, setSrcImage, setStartTime, setThreadStopped, startMethod, windowActivated, windowClosed, windowClosing, windowDeactivated, windowDeiconified, windowIconified, windowOpened

Methods inherited from class java.lang.Thread
activeCount, checkAccess, clone, countStackFrames, currentThread, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, onSpinWait, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, suspend, toString, yield

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - nscale
```
private int nscale
```
  - norient
```
private int norient
```
  - minWaveLength
```
private int minWaveLength
```
  - mult
```
private double mult
```
  - sigmaOnf
```
private double sigmaOnf
```
  - k
```
private double k
```
  - cutOff
```
private double cutOff
```
  - g
```
private int g
```
  - noiseMethod
```
private int noiseMethod
```
  - epsilon
```
private double epsilon
```
  - width
```
private int width
```
  - height
```
private int height
```
  - length
```
private int length
```
  - M
```
private double[] M
```
  - m
```
private double[] m
```
  - or
```
private double[] or
```
  - ft
```
private double[] ft
```
  - T
```
private double T
```
- Constructor Detail
  - AlgorithmPhaseCongruency
```
public AlgorithmPhaseCongruency(ModelImage src)
```
- Method Detail
  - finalize
```
public void finalize()
```
    Description copied from class: AlgorithmBase
    
    Calls garbage collector to release system resources.
    
    Overrides:
    
    finalize in class AlgorithmBase
  - setArguments
```
public void setArguments(int _nscale,
                         int _norient,
                         int _minWaveLength,
                         double _mult,
                         double _sigmaOnf,
                         double _k,
                         double _cutOff,
                         int _g,
                         int _noiseMethod)
```
    % Arguments: % Default values Description % % nscale 4 - Number of wavelet scales, try values 3-6 % norient 6 - Number of filter orientations. % minWaveLength 3 - Wavelength of smallest scale filter. % mult 2.1 - Scaling factor between successive filters. % sigmaOnf 0.55 - Ratio of the standard deviation of the Gaussian % describing the log Gabor filter's transfer function % in the frequency domain to the filter center frequency. % k 2.0 - No of standard deviations of the noise energy beyond % the mean at which we set the noise threshold point. % You may want to vary this up to a value of 10 or % 20 for noisy images % cutOff 0.5 - The fractional measure of frequency spread % below which phase congruency values get penalized. % g 10 - Controls the sharpness of the transition in % the sigmoid function used to weight phase % congruency for frequency spread. % noiseMethod -1 - Parameter specifies method used to determine % noise statistics. % -1 use median of smallest scale filter responses % -2 use mode of smallest scale filter responses % 0+ use noiseMethod value as the fixed noise threshold
  - runAlgorithm
```
public void runAlgorithm()
```
    Description copied from class: AlgorithmBase
    
    Actually runs the algorithm. Implemented by inheriting algorithms.
    
    Specified by:
    
    runAlgorithm in class AlgorithmBase
  - getEdges
```
public double[] getEdges()
```
  - getCorners
```
public double[] getCorners()
```
  - getOrientations
```
public double[] getOrientations()
```
  - getFeatureType
```
public double[] getFeatureType()
```
  - lowpassFilter
```
private double[] lowpassFilter(int n)
```
  - findMedian
```
private double findMedian(double[] array)
```
  - rayleighmode
```
private double rayleighmode(double[] array)
```
  - ifftShift
```
private double[] ifftShift(double[] array)
```

Class AlgorithmPhaseCongruency

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

Field Summary

Fields inherited from class gov.nih.mipav.model.algorithms.AlgorithmBase

Fields inherited from class java.lang.Thread

Constructor Summary

Method Summary

Methods inherited from class gov.nih.mipav.model.algorithms.AlgorithmBase

Methods inherited from class java.lang.Thread

Methods inherited from class java.lang.Object

Field Detail

nscale

norient

minWaveLength

mult

sigmaOnf

k

cutOff

g

noiseMethod

epsilon

width

height

length

M

m

or

ft

T

Constructor Detail

AlgorithmPhaseCongruency

Method Detail

finalize

setArguments

runAlgorithm

getEdges

getCorners

getOrientations

getFeatureType

lowpassFilter

findMedian

rayleighmode

ifftShift