Package adams.data.image.transformer

Class LaplaceOfGaussian

java.lang.Object

adams.core.logging.LoggingObject

adams.core.logging.CustomLoggingLevelObject

adams.core.option.AbstractOptionHandler

adams.data.image.AbstractImageTransformer<BufferedImageContainer>

adams.data.image.transformer.AbstractBufferedImageTransformer

adams.data.image.transformer.LaplaceOfGaussian

All Implemented Interfaces:

CleanUpHandler, Destroyable, GlobalInfoSupporter, LoggingLevelHandler, LoggingSupporter, OptionHandler, QuickInfoSupporter, SizeOfHandler, ImageTransformer<BufferedImageContainer>, FlowContextHandler, Serializable, Comparable

public class LaplaceOfGaussian
extends AbstractBufferedImageTransformer

Applies the Laplacian of Gaussian (LoG) to the image, using the following formula

(x^2 + y^2 - 2*sigma^2) / sigma^4 * exp(-(x^2 +y^2) / (2*sigma^2)

For more information on LoG, see:
http://fourier.eng.hmc.edu/e161/lectures/gradient/node8.html

-logging-level <OFF|SEVERE|WARNING|INFO|CONFIG|FINE|FINER|FINEST> (property: loggingLevel)
    The logging level for outputting errors and debugging output.
    default: WARNING
 

-size <int> (property: size)
    The size of the matrix (rows and columns); must be a positive, odd number.
    default: 5
    minimum: 1
 

-sigma <double> (property: sigma)
    The sigma value.
    default: 1.0
    minimum: 0.0
 

Version:

$Revision$

Author:

fracpete (fracpete at waikato dot ac dot nz)

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected double[][]	m_Matrix	the current matrix.
protected double	m_Sigma	the sigma value of the gaussian.
protected int	m_Size	the size of the matrix.

Fields inherited from class adams.data.image.AbstractImageTransformer

m_FlowContext

Fields inherited from class adams.core.option.AbstractOptionHandler

m_OptionManager

Fields inherited from class adams.core.logging.LoggingObject

m_Logger, m_LoggingIsEnabled, m_LoggingLevel

Constructor Summary

Constructors

Constructor	Description
LaplaceOfGaussian()

Method Summary

Modifier and Type	Method	Description
protected double[][]	calcMatrix()	Calculates the matrix.
void	defineOptions()	Adds options to the internal list of options.
protected BufferedImageContainer[]	doTransform(BufferedImageContainer img)	Performs the actual transforming of the image.
double	getSigma()	Returns the sigma value.
int	getSize()	Returns the size of the matrix (n x n).
String	globalInfo()	Returns a string describing the object.
protected void	reset()	Resets the scheme.
void	setSigma(double value)	Sets the sigma value.
void	setSize(int value)	Sets the size of the matrix (n x n).
String	sigmaTipText()	Returns the tip text for this property.
String	sizeTipText()	Returns the tip text for this property.

Methods inherited from class adams.data.image.transformer.AbstractBufferedImageTransformer

forCommandLine, forName, getTransformations

Methods inherited from class adams.data.image.AbstractImageTransformer

checkImage, cleanUp, compareTo, destroy, equals, getFlowContext, getQuickInfo, initialize, setFlowContext, shallowCopy, shallowCopy, transform

Methods inherited from class adams.core.option.AbstractOptionHandler

cleanUpOptions, finishInit, getDefaultLoggingLevel, getOptionManager, loggingLevelTipText, newOptionManager, setLoggingLevel, toCommandLine, toString

Methods inherited from class adams.core.logging.LoggingObject

configureLogger, getLogger, getLoggingLevel, initializeLogging, isLoggingEnabled, sizeOf

Methods inherited from class java.lang.Object

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

Methods inherited from interface adams.core.logging.LoggingLevelHandler

getLoggingLevel

Methods inherited from interface adams.core.option.OptionHandler

cleanUpOptions, getOptionManager, toCommandLine

Field Detail

m_Size

protected int m_Size

the size of the matrix.

m_Sigma

protected double m_Sigma

the sigma value of the gaussian.

m_Matrix

protected double[][] m_Matrix

the current matrix.

Constructor Detail

LaplaceOfGaussian

public LaplaceOfGaussian()

Method Detail

globalInfo

public String globalInfo()

Returns a string describing the object.

Specified by:

globalInfo in interface GlobalInfoSupporter

Specified by:

globalInfo in class AbstractOptionHandler

Returns:

a description suitable for displaying in the gui

defineOptions

public void defineOptions()

Adds options to the internal list of options.

Specified by:

defineOptions in interface OptionHandler

Overrides:

defineOptions in class AbstractOptionHandler

reset

protected void reset()

Resets the scheme.

Overrides:

reset in class AbstractOptionHandler

setSize

public void setSize(int value)

Sets the size of the matrix (n x n).

Parameters:

value - the size

getSize

public int getSize()

Returns the size of the matrix (n x n).

Returns:

the size

sizeTipText

public String sizeTipText()

Returns the tip text for this property.

Returns:

tip text for this property suitable for displaying in the gui

setSigma

public void setSigma(double value)

Sets the sigma value.

Parameters:

value - the sigma

getSigma

public double getSigma()

Returns the sigma value.

Returns:

the sigma

sigmaTipText

public String sigmaTipText()

Returns the tip text for this property.

Returns:

tip text for this property suitable for displaying in the gui

calcMatrix

protected double[][] calcMatrix()

Calculates the matrix.

Returns:

the matrix

doTransform

protected BufferedImageContainer[] doTransform(BufferedImageContainer img)

Performs the actual transforming of the image.

Specified by:

doTransform in class AbstractImageTransformer<BufferedImageContainer>

Parameters:

img - the image to transform (can be modified, since it is a copy)

Returns:

the generated image(s)