Package gov.nih.mipav.model.algorithms.utilities

Class AlgorithmTiltCorrection

java.lang.Object

java.lang.Thread

gov.nih.mipav.model.algorithms.AlgorithmBase

gov.nih.mipav.model.algorithms.utilities.AlgorithmTiltCorrection

All Implemented Interfaces:

ActionListener, WindowListener, Runnable, EventListener

public class AlgorithmTiltCorrection
extends AlgorithmBase

Author:

ilb In nonhelical multislice CT let the CT gantry coordinate system be x', y', z'. Let phi be the angle between the image coordinate z and the gantry system z'. The z and z' axes intersect at the origin. Then for reconstruction each slice must be shifted: dely = z' * tan(phi) DICOM defines the tag (0018, 1120) Gantry/Detector Tilt for NM, CT, and PET as the nominal angle of tilt of the scanning gantry or the detector. The angle is in degrees of the detector face or the gantry relative to the patient's major (Head to Feet) axis (or the table supporting the patient). Positive tilt is towards the patient's feet Reference: Computed Tomography: Principles, Design, Artifacts, and Recent Advances, Second Edition, Jiang Hsieh, Publisher SPIE, November 19, 2009. Chapter 10: Multislice CT Chapter 10.3 Nonhelical mode of reconstruction, pp. 394-395. Chapter 10.5.5 Tilt artifacts in multislice helical CT, pp. 416-418. In "Tomographic Reconstruction for Tilted Helical Multislice CT" by Jiang Hsieh the reconstruction algorithms presented are either performed during the backprojection process or in shifting the projections before the backprojection process.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

Thread.Builder, Thread.State, Thread.UncaughtExceptionHandler

Field Summary

Fields

Modifier and Type	Field	Description
private boolean	nonHelical
private double	tiltAngle

Fields inherited from class gov.nih.mipav.model.algorithms.AlgorithmBase

destFlag, destImage, image25D, mask, maxProgressValue, minProgressValue, multiThreadingEnabled, nthreads, progress, progressModulus, progressStep, runningInSeparateThread, separable, srcImage, threadStopped

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors

Constructor	Description
AlgorithmTiltCorrection(ModelImage destImg, ModelImage srcImg, boolean nonHelical, double tiltAngle)

Method Summary

Modifier and Type	Method	Description
void	finalize()	Calls garbage collector to release system resources.
private void	helicalCorrection()
private void	nonHelicalCorrection()
void	runAlgorithm()	Actually runs the algorithm.

Methods inherited from class gov.nih.mipav.model.algorithms.AlgorithmBase

actionPerformed, addListener, addProgressChangeListener, calculateImageSize, calculatePrincipleAxis, computeElapsedTime, computeElapsedTime, convertIntoFloat, delinkProgressToAlgorithm, delinkProgressToAlgorithmMulti, displayError, errorCleanUp, fireProgressStateChanged, fireProgressStateChanged, fireProgressStateChanged, fireProgressStateChanged, fireProgressStateChanged, generateProgressValues, getDestImage, getElapsedTime, getMask, getMaxProgressValue, getMinProgressValue, getNumberOfThreads, getProgress, getProgressChangeListener, getProgressChangeListeners, getProgressModulus, getProgressStep, getProgressValues, getSrcImage, isCompleted, isImage25D, isMultiThreadingEnabled, isRunningInSeparateThread, isThreadStopped, linkProgressToAlgorithm, linkProgressToAlgorithm, makeProgress, notifyListeners, removeListener, removeProgressChangeListener, run, setCompleted, setImage25D, setMask, setMaxProgressValue, setMinProgressValue, setMultiThreadingEnabled, setNumberOfThreads, setProgress, setProgressModulus, setProgressStep, setProgressValues, setProgressValues, setRunningInSeparateThread, setSrcImage, setStartTime, setThreadStopped, startMethod, windowActivated, windowClosed, windowClosing, windowDeactivated, windowDeiconified, windowIconified, windowOpened

Methods inherited from class java.lang.Thread

activeCount, checkAccess, clone, countStackFrames, currentThread, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, isVirtual, join, join, join, join, ofPlatform, ofVirtual, onSpinWait, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, sleep, start, startVirtualThread, stop, suspend, threadId, toString, yield

Methods inherited from class java.lang.Object

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

Field Details

nonHelical

private boolean nonHelical

tiltAngle

private double tiltAngle

Constructor Details

AlgorithmTiltCorrection

public AlgorithmTiltCorrection(ModelImage destImg,
 ModelImage srcImg,
 boolean nonHelical,
 double tiltAngle)

Method Details

finalize

public void finalize()

Description copied from class: AlgorithmBase

Calls garbage collector to release system resources.

Overrides:

finalize in class AlgorithmBase

runAlgorithm

public void runAlgorithm()

Description copied from class: AlgorithmBase

Actually runs the algorithm. Implemented by inheriting algorithms.

Specified by:

runAlgorithm in class AlgorithmBase

nonHelicalCorrection

private void nonHelicalCorrection()

helicalCorrection

private void helicalCorrection()