edu.jhu.cs.cisst.algorithms.segmentation.gac
Class PressureForce2D

java.lang.Object
  edu.jhu.cs.cisst.algorithms.segmentation.gac.ActiveContourForce2D
      edu.jhu.cs.cisst.algorithms.segmentation.gac.PressureForce2D

public class PressureForce2D
extends ActiveContourForce2D

The Class PressureForce2D moves the level set outwards in regions of positive pressure and inwards in regions of negative pressure.

Field Summary

protected float[][]

pressureForce The pressure force.

Fields inherited from class edu.jhu.cs.cisst.algorithms.segmentation.gac.ActiveContourForce2D

cols, gridPoints, rows, weight

Constructor Summary

PressureForce2D()

PressureForce2D(float[][] pressureForce)
Instantiates a new pressure force.

Method Summary

double	evaluate(int i, int j) Evaluate the force at a particular grid point position.
void	rescale(double offset) Rescale the pressure field so that the min and max are normalized to one and zero pressure is at the specified offset.

Methods inherited from class edu.jhu.cs.cisst.algorithms.segmentation.gac.ActiveContourForce2D

getGridPoint, getWeight, setGridPoints, setWeight, update

Methods inherited from class java.lang.Object

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

Field Detail

pressureForce

protected float[][] pressureForce

The pressure force.

Constructor Detail

PressureForce2D

public PressureForce2D()

PressureForce2D

public PressureForce2D(float[][] pressureForce)

Instantiates a new pressure force.

Parameters:

pressureForce - the pressure force

Method Detail

rescale

public void rescale(double offset)

Rescale the pressure field so that the min and max are normalized to one and zero pressure is at the specified offset.

Parameters:

offset - the offset pressure

evaluate

public double evaluate(int i,
                       int j)

Description copied from class: ActiveContourForce2D

Evaluate the force at a particular grid point position.

Specified by:

evaluate in class ActiveContourForce2D

Parameters:

i - the x

j - the y

Returns:

the double

See Also:

#evaluate(int, int)