edu.jhu.cs.cisst.algorithms.segmentation.gac
Class GeodesicActiveContour2D

java.lang.Object
  edu.jhu.ece.iacl.jist.pipeline.AbstractCalculation
      edu.jhu.cs.cisst.algorithms.segmentation.gac.GeodesicActiveContour2D

public class GeodesicActiveContour2D
extends AbstractCalculation

The Class GeodesicActiveContour2D segments an image using the sparse matrix method. Regions where the level set positive are outside the segmented region, and regions where the level set is negative are inside the segmented region.

Field Summary

protected java.util.LinkedList<GridPoint2D>	activePoints The active points.
protected int	cols The columns.
protected double	diceThreshold The dice threshold.
protected float[][]	distField The distance field.
protected ImageDataFloat	distFieldImage The distance field image.
protected java.util.LinkedList<ActiveContourForce2D>	forces The forces.
protected GridPoint2D[][]	gridPoints The grid points.
protected ImageData	image The reference image.
protected int	innerIterations The inner iterations.
protected int	insideCount The inside point count.
protected java.util.LinkedList<GridPoint2D>[]	insidePoints The inside points.
protected int	maxLayers The maximum number of layers.
protected double	maxSpeed The max speed.
protected int	negToPosCount The negative to positive transition count.
protected static int[]	neighborsX The 6-connected neighbors x.
protected static int[]	neighborsY The 6-connected neighbors y.
protected int	outerIterations The outer iterations.
protected java.util.LinkedList<GridPoint2D>[]	outsidePoints The outside points.
protected int	posToNegCount The positive to negative transition count.
protected int	rows The rows.

Fields inherited from class edu.jhu.ece.iacl.jist.pipeline.AbstractCalculation

monitor

Constructor Summary

GeodesicActiveContour2D(ImageData referenceImage)
Instantiates a new geodesic active contour.

Method Summary

void	add(ActiveContourForce2D force) Adds the force.
java.util.LinkedList<ActiveContourForce2D>	getForces() Gets the forces.
ImageDataFloat	getLevelSet() Gets the level set.
static java.lang.String	getVersion() Gets the version.
protected void	init(ImageData referenceImage) Initializes the solver.
protected void	initNarrowBand(ImageDataFloat initialLevelSet) Initializes the narrow band.
void	setDiceThreshold(double diceThreshold) Sets the dice threshold.
void	setInnerIterations(int innerIterations) Sets the inner iterations.
void	setMaxLayers(int maxLayers) Sets the maximum number of layers.
void	setOuterIterations(int outerIterations) Sets the outer iterations.
ImageDataFloat	solve(ImageDataFloat initialLevelset) Solve.
ImageDataFloat	solveVerbose(ImageDataFloat initialLevelSet) Solve and generate verbose output.
protected void	updateNarrowBand() Update narrow band.

Methods inherited from class edu.jhu.ece.iacl.jist.pipeline.AbstractCalculation

add, addTotalUnits, decrementCompletedUnits, decrementCompletedUnits, getCompletedUnits, getCurrentLabel, getCurrentProgress, getLabel, getPerformance, getProgress, getTotalUnits, incrementCompletedUnits, incrementCompletedUnits, isCompleted, markCompleted, reset, setCompletedUnits, setCompletedUnits, setLabel, setMonitor, setTotalUnits

Methods inherited from class java.lang.Object

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

Field Detail

maxLayers

protected int maxLayers

The maximum number of layers. Do not use less than 3 layers because then inside/outside become ambiguous

insidePoints

protected java.util.LinkedList<GridPoint2D>[] insidePoints

The inside points.

outsidePoints

protected java.util.LinkedList<GridPoint2D>[] outsidePoints

The outside points.

activePoints

protected java.util.LinkedList<GridPoint2D> activePoints

The active points.

image

protected ImageData image

The reference image.

gridPoints

protected GridPoint2D[][] gridPoints

The grid points.

distField

protected float[][] distField

The distance field.

distFieldImage

protected ImageDataFloat distFieldImage

The distance field image.

rows

protected int rows

The rows.

cols

protected int cols

The columns.

insideCount

protected int insideCount

The inside point count.

diceThreshold

protected double diceThreshold

The dice threshold.

maxSpeed

protected double maxSpeed

The max speed.

innerIterations

protected int innerIterations

The inner iterations.

outerIterations

protected int outerIterations

The outer iterations.

posToNegCount

protected int posToNegCount

The positive to negative transition count.

negToPosCount

protected int negToPosCount

The negative to positive transition count.

neighborsX

protected static int[] neighborsX

The 6-connected neighbors x.

neighborsY

protected static int[] neighborsY

The 6-connected neighbors y.

forces

protected java.util.LinkedList<ActiveContourForce2D> forces

The forces.

Constructor Detail

GeodesicActiveContour2D

public GeodesicActiveContour2D(ImageData referenceImage)

Instantiates a new geodesic active contour.

Parameters:

referenceImage - the reference image

Method Detail

getVersion

public static java.lang.String getVersion()

Gets the version.

Returns:

the version

setDiceThreshold

public void setDiceThreshold(double diceThreshold)

Sets the dice threshold.

Parameters:

diceThreshold - the new dice threshold

setMaxLayers

public void setMaxLayers(int maxLayers)

Sets the maximum number of layers.

Parameters:

maxLayers - the new max layers

setInnerIterations

public void setInnerIterations(int innerIterations)

Sets the inner iterations.

Parameters:

innerIterations - the new inner iterations

setOuterIterations

public void setOuterIterations(int outerIterations)

Sets the outer iterations.

Parameters:

outerIterations - the new outer iterations

getLevelSet

public ImageDataFloat getLevelSet()

Gets the level set.

Returns:

the level set

add

public void add(ActiveContourForce2D force)

Adds the force.

Parameters:

force - the force

getForces

public java.util.LinkedList<ActiveContourForce2D> getForces()

Gets the forces.

Returns:

the forces

init

protected void init(ImageData referenceImage)

Initializes the solver.

Parameters:

referenceImage - the reference image

solve

public ImageDataFloat solve(ImageDataFloat initialLevelset)

Solve.

Parameters:

initialLevelset - the initial level set

Returns:

the final level set

solveVerbose

public ImageDataFloat solveVerbose(ImageDataFloat initialLevelSet)

Solve and generate verbose output.

Parameters:

initialLevelSet - the initial level set

Returns:

all intermediate level sets

updateNarrowBand

protected void updateNarrowBand()

Update narrow band.

initNarrowBand

protected void initNarrowBand(ImageDataFloat initialLevelSet)

Initializes the narrow band.

Parameters:

initialLevelSet - the initial level set