de.unihalle.informatik.MiToBo.morphology

Class SkeletonExtractor

java.lang.Object

de.unihalle.informatik.Alida.operator.ALDOperator

de.unihalle.informatik.MiToBo.core.operator.MTBOperator

de.unihalle.informatik.MiToBo.morphology.SkeletonExtractor

All Implemented Interfaces:

de.unihalle.informatik.Alida.datatypes.ALDConfigurationValidator, de.unihalle.informatik.Alida.operator.events.ALDOperatorExecutionProgressEventListener, EventListener

@ALDAOperator(genericExecutionMode=ALL,
              level=APPLICATION)
public class SkeletonExtractor
extends MTBOperator

Extracts skeleton of foreground region.

The foreground of the given image is defined by all pixels having values larger than zero.

Note that this operator directly uses ImageJ 1.x functionality! In ImageJ the skeletonization is implemented based on this paper:

Zhang TY, Suen CY (1984) A fast parallel algorithm for thinning digital patterns. Commun ACM 27: 236–239

For more details take a look at Section 29.8.9 on this page:
https://imagej.nih.gov/ij/docs/guide/146-29.html#toc-Subsection-29.8

Author:

moeller

Nested Class Summary

Nested classes/interfaces inherited from class de.unihalle.informatik.Alida.operator.ALDOperator

de.unihalle.informatik.Alida.operator.ALDOperator.HidingMode, de.unihalle.informatik.Alida.operator.ALDOperator.HistoryConstructionMode

Field Summary

Fields

Modifier and Type	Field and Description
private MTBImage	inImg Binary input image, pixels with value 0 are interpreted as background.
private MTBImageByte	resultImg Binary result image, skeleton in white, background in black.

Fields inherited from class de.unihalle.informatik.Alida.operator.ALDOperator

completeDAG, name, operatorExecutionEventlistenerList, portHashAccess, verbose, versionProvider

Constructor Summary

Constructors

Constructor and Description
SkeletonExtractor() Default constructor.

Method Summary

Modifier and Type	Method and Description
MTBImage	getInputImage() Returns the input image, null if not set.
MTBImageByte	getResultImage() Returns the skeleton image.
protected void	operate() This method does the actual work.
void	setInputImage(MTBImage img) Set input image to process.

Methods inherited from class de.unihalle.informatik.MiToBo.core.operator.MTBOperator

readResolve

Methods inherited from class de.unihalle.informatik.Alida.operator.ALDOperator

addOperatorExecutionProgressEventListener, addParameter, addParameter, addParameterUnconditioned, fieldContained, fireOperatorExecutionProgressEvent, getALDPortHashAccessKey, getConstructionMode, getDocumentation, getHidingMode, getInactiveParameterNames, getInInoutNames, getInInoutNames, getInNames, getInOutNames, getMissingRequiredInputs, getName, getNumParameters, getOutInoutNames, getOutNames, getParameter, getParameterDescriptor, getParameterDescriptorUnconditioned, getParameterNames, getParameterUnconditioned, getSupplementalNames, getVerbose, getVersion, handleOperatorExecutionProgressEvent, hasInOutParameters, hasParameter, isAnnotatedParameter, isConfigured, print, print, print, printInterface, printInterface, readHistory, reinitializeParameterDescriptors, removeOperatorExecutionProgressEventListener, removeParameter, runOp, runOp, runOp, setConstructionMode, setConstructionMode, setConstructionMode, setHidingMode, setName, setParameter, setParameterUnconditioned, setVerbose, toStringVerbose, unconfiguredItems, validate, validateCustom, validateGeneric, writeHistory, writeHistory, writeHistory

Methods inherited from class java.lang.Object

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

Field Detail

inImg

@Parameter(label="Input Image",
           required=true,
           dataIOOrder=0,
           direction=IN,
           description="Input image.")
private transient MTBImage inImg

Binary input image, pixels with value 0 are interpreted as background.

resultImg

@Parameter(label="Result Image",
           required=true,
           direction=OUT,
           description="Result image.")
private transient MTBImageByte resultImg

Binary result image, skeleton in white, background in black.

Constructor Detail

SkeletonExtractor

public SkeletonExtractor()
                  throws de.unihalle.informatik.Alida.exceptions.ALDOperatorException

Default constructor.

Throws:

de.unihalle.informatik.Alida.exceptions.ALDOperatorException - Thrown in case of failure.

Method Detail

setInputImage

public void setInputImage(MTBImage img)

Set input image to process.

Parameters:

img - Input image to process.

getInputImage

public MTBImage getInputImage()

Returns the input image, null if not set.

Returns:

Input image.

getResultImage

public MTBImageByte getResultImage()

Returns the skeleton image.

Returns:

Binary skeleton image.

operate

protected void operate()

This method does the actual work.

Specified by:

operate in class de.unihalle.informatik.Alida.operator.ALDOperator