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

Class MTBSizeEnergyNonPDE

java.lang.Object

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

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

@ALDDerivedClass
 @ALDParametrizedClass
public class MTBSizeEnergyNonPDE
extends MTBGenericEnergyNonPDE

A class to implement the size energy of the Chan-Vese energy.

Author:

Stefan Posch

Field Summary

Fields

Modifier and Type	Field and Description
private double	nu weight for this energy

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

debug, name

Constructor Summary

Constructors

Constructor and Description
MTBSizeEnergyNonPDE() Constructor for size energy with weight nu.
MTBSizeEnergyNonPDE(double nu) Constructor for size energy with weight nu.

Method Summary

Modifier and Type	Method and Description
double	deltaE(int x, int y, int z, MTBLevelsetMembership phi) Calculate differences of energy if the pixel/voxel (x,y,z) changes its phase in the levelest function phi supplied as argument and assumed to be associated with this energy object.
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(MTBLevelsetMembership phi) Return the complete energy for the level set function phi.
void	print(MTBLevelsetMembership LSM, PrintStream out, String indent) Print this energy object - including the value of the energy for phi assumed to be associated with this energy object.
String	toString() Return an ascii representation identifying the energy and internal parameters, but not the state.
void	updateParams(int x, int y, int z, short newPhase, MTBLevelsetMembership phi) Update parameters (if any) of the energy object which depend on the associated level set function.

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

estimateParams, getNewIndent, init, setDebug, updateParams

Methods inherited from class java.lang.Object

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

Field Detail

nu

@ALDClassParameter(label="nu")
private final double nu

weight for this energy

Constructor Detail

MTBSizeEnergyNonPDE

public MTBSizeEnergyNonPDE()

Constructor for size energy with weight nu.

MTBSizeEnergyNonPDE

public MTBSizeEnergyNonPDE(double nu)

Constructor for size energy with weight nu.

Parameters:

nu - weight of size energy

Method Detail

deltaE

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

Description copied from class: MTBGenericEnergyNonPDE

Calculate differences of energy if the pixel/voxel (x,y,z) changes its phase in the levelest function phi supplied as argument and assumed to be associated with this energy object.

This version makes sense only for two phase level set function. In the multi phase case any object phase is changed to the background, while a background pixel/voxel is changed to the first object phase.

Overrides:

deltaE in class MTBGenericEnergyNonPDE

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

Returns:

difference of energy

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.

Specified by:

deltaE in class MTBGenericEnergyNonPDE

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

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.

Specified by:

E in class MTBGenericEnergyNonPDE

Parameters:

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

Returns:

energy

updateParams

public void updateParams(int x,
                         int y,
                         int z,
                         short newPhase,
                         MTBLevelsetMembership phi)

Description copied from class: MTBGenericEnergyNonPDE

Update parameters (if any) of the energy object which depend on the associated level set function.

This method is called to update the parameters if is is intended to change the phase of a pixel/voxel to newPhase.

Note: The level set function phi is still in the old state and is assumed to be to updated subsequently.

Overrides:

updateParams in class MTBGenericEnergyNonPDE

newPhase - new phase to change pixel/voxel to

phi - assumed to be associated with this energy object

toString

public String toString()

Description copied from class: MTBGenericEnergyNonPDE

Return an ascii representation identifying the energy and internal parameters, but not the state.

Specified by:

toString in class MTBGenericEnergyNonPDE

print

public void print(MTBLevelsetMembership LSM,
                  PrintStream out,
                  String indent)

Description copied from class: MTBGenericEnergyNonPDE

Print this energy object - including the value of the energy for phi assumed to be associated with this energy object. Each line output is prefixed with the string indent. Note: this may be an expensive operation.

Overrides:

print in class MTBGenericEnergyNonPDE

Parameters:

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

out - stream to print to

indent - indentation string