edu.jhu.cs.cisst.algorithms.segmentation.gac
Class ActiveContourForce2D

java.lang.Object
  edu.jhu.cs.cisst.algorithms.segmentation.gac.ActiveContourForce2D

Direct Known Subclasses:

AdvectionForce2D, GaussianCurvatureForce2D, MeanCurvatureForce2D, PressureForce2D

public abstract class ActiveContourForce2D
extends java.lang.Object

The Class ActiveContourForce2D is an abstract class to represent level set forces.

Field Summary

protected int	cols The columns.
protected GridPoint2D[][]	gridPoints The grid points.
protected int	rows The columns.
protected double	weight The weight.

Constructor Summary

ActiveContourForce2D()
Instantiates a new active contour force.

ActiveContourForce2D(GridPoint2D[][] gridPoints)
Instantiates a new active contour force.

ActiveContourForce2D(GridPoint2D[][] gridPoints, double weight)
Instantiates a new active contour force.

Method Summary

abstract double	evaluate(int x, int y) Evaluate the force at a particular grid point position.
GridPoint2D	getGridPoint(int i, int j) Gets the grid point.
double	getWeight() Gets the weight.
void	setGridPoints(GridPoint2D[][] gridPoints) Sets the grid points.
void	setWeight(double weight) Sets the weight.
void	update() Update the force periodically while solving the PDE.

Methods inherited from class java.lang.Object

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

Field Detail

gridPoints

protected GridPoint2D[][] gridPoints

The grid points.

rows

protected int rows

The columns.

cols

protected int cols

The columns.

weight

protected double weight

The weight.

Constructor Detail

ActiveContourForce2D

public ActiveContourForce2D(GridPoint2D[][] gridPoints,
                            double weight)

Instantiates a new active contour force.

Parameters:

gridPoints - the grid points

weight - the weight

ActiveContourForce2D

public ActiveContourForce2D(GridPoint2D[][] gridPoints)

Instantiates a new active contour force.

Parameters:

gridPoints - the grid points

ActiveContourForce2D

public ActiveContourForce2D()

Instantiates a new active contour force.

Method Detail

setGridPoints

public void setGridPoints(GridPoint2D[][] gridPoints)

Sets the grid points.

Parameters:

gridPoints - the new grid points

getGridPoint

public GridPoint2D getGridPoint(int i,
                                int j)

Gets the grid point.

Parameters:

i - the i

j - the j

Returns:

the grid point

getWeight

public double getWeight()

Gets the weight.

Returns:

the weight

setWeight

public void setWeight(double weight)

Sets the weight.

Parameters:

weight - the new weight

evaluate

public abstract double evaluate(int x,
                                int y)

Evaluate the force at a particular grid point position.

Parameters:

x - the x

y - the y

Returns:

the double

update

public void update()

Update the force periodically while solving the PDE.