AlgorithmTiltCorrection (MIPAV API Documentation)

java.lang.Object
- java.lang.Thread
- - gov.nih.mipav.model.algorithms.AlgorithmBase
  - - gov.nih.mipav.model.algorithms.utilities.AlgorithmTiltCorrection

All Implemented Interfaces:

java.awt.event.ActionListener, java.awt.event.WindowListener, java.lang.Runnable, java.util.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
  java.lang.Thread.State, java.lang.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

All Methods Instance Methods Concrete Methods
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, join, join, join, onSpinWait, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, suspend, toString, yield

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - nonHelical
```
private boolean nonHelical
```
  - tiltAngle
```
private double tiltAngle
```
- Constructor Detail
  - AlgorithmTiltCorrection
```
public AlgorithmTiltCorrection(ModelImage destImg,
                               ModelImage srcImg,
                               boolean nonHelical,
                               double tiltAngle)
```
- Method Detail
  - 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()
```