Module org.scijava.ops.image

Package org.scijava.ops.image.morphology.thin

Class GuoHallThinningStrategy

java.lang.Object

org.scijava.ops.image.morphology.thin.Abstract3x3NeighbourhoodThinning

org.scijava.ops.image.morphology.thin.GuoHallThinningStrategy

All Implemented Interfaces:

ThinningStrategy

public class GuoHallThinningStrategy
extends Abstract3x3NeighbourhoodThinning

Represents the thinning algorithm proposed by Z. Guo and R. W. Hall.

Author:

Andreas Burger, University of Konstanz

Implementation Note:

thinningstrategy names='GuoHall'

Field Summary

Fields inherited from class org.scijava.ops.image.morphology.thin.Abstract3x3NeighbourhoodThinning

m_background, m_foreground

Constructor Summary

Constructors

Constructor	Description
GuoHallThinningStrategy()
GuoHallThinningStrategy(boolean foreground)	Create a new Guo-Hall thinning strategy.

Method Summary

Modifier and Type	Method	Description
ThinningStrategy	copy()	Returns a separate copy of this strategy.
int	getIterationsPerCycle()	Returns the minimum number of iterations necessary for the algorithm to run.
boolean	removePixel(long[] position, RandomAccessible<BitType> accessible, int iteration)	This method should determine whether to keep a foreground pixel or not.

Methods inherited from class org.scijava.ops.image.morphology.thin.Abstract3x3NeighbourhoodThinning

afterCycle, findPatternSwitches, getNeighbourhood, randomAccess

Methods inherited from class java.lang.Object

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

Constructor Detail

GuoHallThinningStrategy

public GuoHallThinningStrategy()

GuoHallThinningStrategy

public GuoHallThinningStrategy(boolean foreground)

Create a new Guo-Hall thinning strategy. The passed boolean will represent the foreground-value of the image.

Parameters:

foreground - Value determining the boolean value of foreground pixels.

Method Detail

removePixel

public boolean removePixel(long[] position,
                           RandomAccessible<BitType> accessible,
                           int iteration)

Description copied from interface: ThinningStrategy

This method should determine whether to keep a foreground pixel or not.

Parameters:

position - Long Array containing the current position in the image.

accessible - The image to thin.

iteration - The iteration number.

Returns:

True if pixel can be switched to background, false otherwise.

getIterationsPerCycle

public int getIterationsPerCycle()

Description copied from interface: ThinningStrategy

Returns the minimum number of iterations necessary for the algorithm to run. This delays termination of the thinning algorithm until the end of the current cycle. If, for example, no changes occur during the second iteration of a 4-iteration-cycle, iterations 3 and 4 still take place.

Specified by:

getIterationsPerCycle in interface ThinningStrategy

Overrides:

getIterationsPerCycle in class Abstract3x3NeighbourhoodThinning

Returns:

The number of iterations per cycle.

copy

public ThinningStrategy copy()

Description copied from interface: ThinningStrategy

Returns a separate copy of this strategy.

Returns:

A new instance of this strategy with the same values.