edu.stanford.rsl.tutorial.motionEstimation

Class InitialOptimization

java.lang.Object

edu.stanford.rsl.tutorial.motionEstimation.InitialOptimization

public class InitialOptimization
extends java.lang.Object

This class implements an initial optimization of the motion field generated by the diaphragm tracking and triangulation filters. The motion field stored in the Configuration is loaded and refined. The motion signal is first scaled to optimize the correct maximum amplitude. A compensated reconstruction using the scaled signal is done. The reconstruction quality is evaluated based on the contrast of diaphragm and lung.

Author:

Marco Boegel

Field Summary

Fields

Modifier and Type	Field and Description
static int	diaOffsetMM

Constructor Summary

Constructors

Constructor and Description
InitialOptimization(ProjectionLoader pLoad) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
float[][]	getMotionField(float[] params, int reconSizeZ, double vZ, double oZ) This method computes the motionfield given the optimized parameter array from the optimization functions
static void	main(java.lang.String[] args)
float[]	optimizeCompressedWithPrior()

Methods inherited from class java.lang.Object

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

Field Detail

diaOffsetMM

public static final int diaOffsetMM

See Also:

Constant Field Values

Constructor Detail

InitialOptimization

public InitialOptimization(ProjectionLoader pLoad)

Constructor. Initializes all important fields.

Parameters:

pLoad - Projection loader with prefiltered projection images

Method Detail

optimizeCompressedWithPrior

public float[] optimizeCompressedWithPrior()
                                    throws java.io.IOException

Throws:

java.io.IOException

getMotionField

public float[][] getMotionField(float[] params,
                       int reconSizeZ,
                       double vZ,
                       double oZ)

This method computes the motionfield given the optimized parameter array from the optimization functions

Parameters:

params - parameter vector, returned from optimizeCompressedWithPrior

reconSizeZ - size of reconstruction in z-dimension

vZ - voxelSpacing in z-dimension

oZ - origin in z-dimension

Returns:

the motion field

main

public static void main(java.lang.String[] args)
                 throws java.lang.Exception

Throws:

java.lang.Exception