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java.lang.Objectde.unihalle.informatik.MiToBo.segmentation.snakes.energies.MTBSnakeEnergyCDImageBased
de.unihalle.informatik.MiToBo.segmentation.snakes.energies.MTBSnakeEnergyCDIB_Intensity
@ALDDerivedClass @ALDParametrizedClass public class MTBSnakeEnergyCDIB_Intensity
External snake energy based on image intensities.
The energy for a snake C is defined as follows:
Note that this energy has only a small capture range of one or two pixels, thus, your initialization is required to be very accurate already.
Field Summary |
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Fields inherited from class de.unihalle.informatik.MiToBo.segmentation.snakes.energies.MTBSnakeEnergyCDImageBased |
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height, normalizationFactor, normMode, scaleFactor, width |
Fields inherited from interface de.unihalle.informatik.MiToBo.segmentation.snakes.energies.MTBSnakeEnergyDerivable |
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targetEnergyRange |
Constructor Summary | |
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MTBSnakeEnergyCDIB_Intensity()
Default constructor. |
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MTBSnakeEnergyCDIB_Intensity(MTBImage _image)
Constructor to create a new SnakeExternalEnergyIntensity object. |
Method Summary | |
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Jama.Matrix |
getDerivative_VectorPart(SnakeOptimizerSingleVarCalc opt)
Returns the vector part of this energy for snake optimization. |
double |
getDerivativeX(double x,
double y)
Get x-derivative of external snake energy at given position using central differences. |
double |
getDerivativeY(double x,
double y)
Get y-derivative of external snake energy at given position using central differences. |
double |
getValue(double x,
double y)
Returns the value of the external energy at the given position. |
boolean |
initEnergy(SnakeOptimizerSingle o)
Init routine which is called once before the energy is actually used. |
void |
normalizeEnergy()
Normalize the external energy in a range [-1.0, 1.0]. |
String |
toString()
Get an identifier string for the energy object. |
Methods inherited from class de.unihalle.informatik.MiToBo.segmentation.snakes.energies.MTBSnakeEnergyCDImageBased |
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calcEnergy, calcEnergy, getDerivative_MatrixPart, getDerivativeX_norm, getDerivativeY_norm, getScaleFactor, getValue_norm, requiresCounterClockwiseContourSorting, requiresOverlapMask, setScaleFactor, updateStatus |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public MTBSnakeEnergyCDIB_Intensity()
public MTBSnakeEnergyCDIB_Intensity(MTBImage _image)
_image
- input imageMethod Detail |
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public boolean initEnergy(SnakeOptimizerSingle o)
MTBSnakeEnergyDerivable
In this routine global parameter settings can be handled or other initialization stuff be done. The SnakeOptimizer will call this routine once before the actual use of the energy. If no stuff needs to be done in advance the routine should at least return true.
initEnergy
in interface MTBSnakeEnergyComputable
initEnergy
in interface MTBSnakeEnergyDerivable
initEnergy
in class MTBSnakeEnergyCDImageBased
o
- Calling snake optimizer.
public double getValue(double x, double y)
getValue
in class MTBSnakeEnergyCDImageBased
x
- x-coordinate of positiony
- y-coordinate of position
public Jama.Matrix getDerivative_VectorPart(SnakeOptimizerSingleVarCalc opt)
MTBSnakeEnergyDerivable
getDerivative_VectorPart
in interface MTBSnakeEnergyDerivable
getDerivative_VectorPart
in class MTBSnakeEnergyCDImageBased
opt
- Calling snake optimizer.
public double getDerivativeX(double x, double y)
getDerivativeX
in class MTBSnakeEnergyCDImageBased
x
- x-coordinate of pixel positiony
- y-coordinate of pixel position
public double getDerivativeY(double x, double y)
getDerivativeY
in class MTBSnakeEnergyCDImageBased
x
- x-coordinate of pixel positiony
- y-coordinate of pixel position
public void normalizeEnergy()
normalizeEnergy
in class MTBSnakeEnergyCDImageBased
public String toString()
MTBSnakeEnergyDerivable
When meta parameters are saved to a file, configuration objects need to be converted to strings. Consequently, each snake energy should be associated with a unique and descriptive string for later reference.
toString
in interface MTBSnakeEnergyComputable
toString
in interface MTBSnakeEnergyDerivable
toString
in class Object
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