de.unihalle.informatik.MiToBo.segmentation.levelset.nonPDE

Class MTBLengthEnergyFW3DNonPDE

java.lang.Object

de.unihalle.informatik.MiToBo.segmentation.levelset.nonPDE.MTBGenericEnergyNonPDE

de.unihalle.informatik.MiToBo.segmentation.levelset.nonPDE.MTBLengthEnergyNonPDE

de.unihalle.informatik.MiToBo.segmentation.levelset.nonPDE.MTBLengthEnergyFWNonPDE

de.unihalle.informatik.MiToBo.segmentation.levelset.nonPDE.MTBLengthEnergyFW3DNonPDE

Direct Known Subclasses:

MTBLengthEnergyFW3D2PNonPDE, MTBLengthEnergyFW3DMPNonPDE

@ALDParametrizedClass
public abstract class MTBLengthEnergyFW3DNonPDE
extends MTBLengthEnergyFWNonPDE

Implements the (standard) length energy using forward differences for 3D images. This is an abstract class, gradMagHeaviside still needs to be implemented.

Field Summary

Fields inherited from class de.unihalle.informatik.MiToBo.segmentation.levelset.nonPDE.MTBLengthEnergyNonPDE

doNormalization, FLAG_LENGTH, mu, scaleFactor

Fields inherited from class de.unihalle.informatik.MiToBo.segmentation.levelset.nonPDE.MTBGenericEnergyNonPDE

debug, name

Constructor Summary

Constructors

Constructor and Description
MTBLengthEnergyFW3DNonPDE() constructor
MTBLengthEnergyFW3DNonPDE(double mu) constructor

Method Summary

Modifier and Type	Method and Description
double	deltaE(int x, int y, int z, short newPhase, MTBLevelsetMembership phi) Calculate differences of energy if the pixel/voxel (x,y,z) is changed from its current phase in the level set function phi supplied from current phase to newPhase.
double	E(int x, int y, int z, MTBLevelsetMembership phi) Get energy term a voxel (x,y,z) for phi.
double	E(MTBLevelsetMembership phi) Return the complete energy for the level set function phi.
protected abstract double	gradMagHeaviside(double a, double b, double c, double d) calculate the gradient magnitude of the foreward difference of the heavyside function corresponding to the level set for one voxel

Methods inherited from class de.unihalle.informatik.MiToBo.segmentation.levelset.nonPDE.MTBLengthEnergyFWNonPDE

createEnergy, init

Methods inherited from class de.unihalle.informatik.MiToBo.segmentation.levelset.nonPDE.MTBLengthEnergyNonPDE

setScaleFactor, toString

Methods inherited from class de.unihalle.informatik.MiToBo.segmentation.levelset.nonPDE.MTBGenericEnergyNonPDE

deltaE, estimateParams, getNewIndent, print, setDebug, updateParams, updateParams

Methods inherited from class java.lang.Object

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

Constructor Detail

MTBLengthEnergyFW3DNonPDE

public MTBLengthEnergyFW3DNonPDE(double mu)

constructor

Parameters:

mu - weight of the length term

MTBLengthEnergyFW3DNonPDE

public MTBLengthEnergyFW3DNonPDE()

constructor

Method Detail

deltaE

public double deltaE(int x,
                     int y,
                     int z,
                     short newPhase,
                     MTBLevelsetMembership phi)

Description copied from class: MTBGenericEnergyNonPDE

Calculate differences of energy if the pixel/voxel (x,y,z) is changed from its current phase in the level set function phi supplied from current phase to newPhase.

Overrides:

deltaE in class MTBLengthEnergyFWNonPDE

newPhase - new phase to change the pixel/voxel to

phi - level set function assumed to be associated with this energy object

Returns:

difference of energy

gradMagHeaviside

protected abstract double gradMagHeaviside(double a,
                                           double b,
                                           double c,
                                           double d)

calculate the gradient magnitude of the foreward difference of the heavyside function corresponding to the level set for one voxel

Parameters:

a - heaviside functtion at (x,y,z)

b - heaviside functtion at (x+1,y,z)

c - heaviside functtion at (x,y+1,z)

d - heaviside functtion at (x,y,z+1)

Returns:

weight of the length term

E

public double E(MTBLevelsetMembership phi)

Description copied from class: MTBGenericEnergyNonPDE

Return the complete energy for the level set function phi.
Note: this may be an expensive operation.

Overrides:

E in class MTBLengthEnergyFWNonPDE

Parameters:

phi - level set function assumed to be associated with this energy object

Returns:

energy

E

public double E(int x,
                int y,
                int z,
                MTBLevelsetMembership phi)

Get energy term a voxel (x,y,z) for phi.

Parameters:

x -

y -

z -

phi -

Returns:

energy