Package gov.nih.mipav.model.algorithms

Class AlgorithmPhaseCongruency

java.lang.Object

java.lang.Thread

gov.nih.mipav.model.algorithms.AlgorithmBase

gov.nih.mipav.model.algorithms.AlgorithmPhaseCongruency

All Implemented Interfaces:

ActionListener, WindowListener, Runnable, 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

Thread.Builder, Thread.State, 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

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, isVirtual, join, join, join, join, ofPlatform, ofVirtual, onSpinWait, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, sleep, start, startVirtualThread, stop, suspend, threadId, toString, yield

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

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 Details

AlgorithmPhaseCongruency

public AlgorithmPhaseCongruency(ModelImage src)

Method Details

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)