Catalano.Imaging.Filters

Class GaborFilter

java.lang.Object

Catalano.Imaging.Filters.GaborFilter

All Implemented Interfaces:

IApplyInPlace

public class GaborFilter
extends java.lang.Object
implements IApplyInPlace

Gabor Filter. In image processing, a Gabor filter, named after Dennis Gabor, is a linear filter used for edge detection. Frequency and orientation representations of Gabor filters are similar to those of the human visual system, and they have been found to be particularly appropriate for texture representation and discrimination. In the spatial domain, a 2D Gabor filter is a Gaussian kernel function modulated by a sinusoidal plane wave.

See Also:

http://en.wikipedia.org/wiki/Gabor_filter

Constructor Summary

Constructors

Constructor and Description
GaborFilter() Initializes a new instance of the GaborFilterFinal class.
GaborFilter(double wavelength) Initializes a new instance of the GaborFilterFinal class.
GaborFilter(double wavelength, double orientation) Initializes a new instance of the GaborFilterFinal class.
GaborFilter(double wavelength, double orientation, double phaseOffset) Initializes a new instance of the GaborFilterFinal class.
GaborFilter(double wavelength, double orientation, double phaseOffset, double gaussianVar) Initializes a new instance of the GaborFilterFinal class.
GaborFilter(double wavelength, double orientation, double phaseOffset, double gaussianVar, double aspectRatio) Initializes a new instance of the GaborFilterFinal class.
GaborFilter(double wavelength, double orientation, double phaseOffset, double gaussianVar, double aspectRatio, Gabor.Config config) Initializes a new instance of the GaborFilterFinal class.

Method Summary

Modifier and Type	Method and Description
void	applyInPlace(FastBitmap fastBitmap) Apply filter to an image.
double	getAspectRatio() Get Aspect ratio (Gamma).
Gabor.Config	getConfig() Get Gabor function configuration.
double	getGaussianVar() Get Gaussian variance (Sigma).
double	getOrientation() Get Orientation (Theta).
double	getPhaseOffset() Get Phase offset (Psi).
int	getSize() Get size of Gabor kernel.
double	getWavelength() Get Wavelength (Lambda).
boolean	isSigned() Verify if the image is signed.
void	setAspectRatio(double gamma) Set Aspect ratio (Gamma).
void	setConfig(Gabor.Config config) Set Gabor function configuration.
void	setGaussianVar(double sigma) Set Gaussian variance (Sigma).
void	setOrientation(double theta) Set Orientation (Theta).
void	setPhaseOffset(double psi) Set Phase offset (Psi).
void	setSigned(boolean signed) Set signed image.
void	setSize(int size) Set size of Gabor kernel.
void	setWavelength(double lambda) Set Wavelength (Lambda).

Methods inherited from class java.lang.Object

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

Constructor Detail

GaborFilter

public GaborFilter()

Initializes a new instance of the GaborFilterFinal class.

GaborFilter

public GaborFilter(double wavelength)

Initializes a new instance of the GaborFilterFinal class.

Parameters:

wavelength - Wavelength.

GaborFilter

public GaborFilter(double wavelength,
                   double orientation)

Initializes a new instance of the GaborFilterFinal class.

Parameters:

wavelength - Wavelength.

orientation - Orientation.

GaborFilter

public GaborFilter(double wavelength,
                   double orientation,
                   double phaseOffset)

Initializes a new instance of the GaborFilterFinal class.

Parameters:

wavelength - Wavelength.

orientation - Orientation.

phaseOffset - Phase offset.

GaborFilter

public GaborFilter(double wavelength,
                   double orientation,
                   double phaseOffset,
                   double gaussianVar)

Initializes a new instance of the GaborFilterFinal class.

Parameters:

wavelength - Wavelength.

orientation - Orientation.

phaseOffset - Phase offset.

gaussianVar - Gaussian variance.

GaborFilter

public GaborFilter(double wavelength,
                   double orientation,
                   double phaseOffset,
                   double gaussianVar,
                   double aspectRatio)

Initializes a new instance of the GaborFilterFinal class.

Parameters:

wavelength - Wavelength.

orientation - Orientation.

phaseOffset - Phase offset.

gaussianVar - Gaussian variance.

aspectRatio - Aspect ratio.

GaborFilter

public GaborFilter(double wavelength,
                   double orientation,
                   double phaseOffset,
                   double gaussianVar,
                   double aspectRatio,
                   Gabor.Config config)

Initializes a new instance of the GaborFilterFinal class.

Parameters:

wavelength - Wavelength.

orientation - Orientation.

phaseOffset - Phase offset.

gaussianVar - Gaussian variance.

aspectRatio - Aspect ratio.

config - Gabor configuration.

Method Detail

getSize

public int getSize()

Get size of Gabor kernel.

Returns:

Size.

setSize

public void setSize(int size)

Set size of Gabor kernel.

Parameters:

size - Size.

getWavelength

public double getWavelength()

Get Wavelength (Lambda).

Returns:

Lambda value.

setWavelength

public void setWavelength(double lambda)

Set Wavelength (Lambda).

Parameters:

lambda - Lambda value.

getOrientation

public double getOrientation()

Get Orientation (Theta).

Returns:

Theta value.

setOrientation

public void setOrientation(double theta)

Set Orientation (Theta).

Parameters:

theta - Theta value.

getPhaseOffset

public double getPhaseOffset()

Get Phase offset (Psi).

Returns:

Phi value.

setPhaseOffset

public void setPhaseOffset(double psi)

Set Phase offset (Psi).

Parameters:

phi -

getGaussianVar

public double getGaussianVar()

Get Gaussian variance (Sigma).

Returns:

Sigma value.

setGaussianVar

public void setGaussianVar(double sigma)

Set Gaussian variance (Sigma).

Parameters:

sigma - Sigma value.

getAspectRatio

public double getAspectRatio()

Get Aspect ratio (Gamma).

Returns:

gamma.

setAspectRatio

public void setAspectRatio(double gamma)

Set Aspect ratio (Gamma).

Parameters:

gamma - Gamma.

getConfig

public Gabor.Config getConfig()

Get Gabor function configuration.

Returns:

Configuration.

setConfig

public void setConfig(Gabor.Config config)

Set Gabor function configuration.

Parameters:

config - Configuration.

isSigned

public boolean isSigned()

Verify if the image is signed.

Returns:

True if the image is signed, otherwise false.

setSigned

public void setSigned(boolean signed)

Set signed image. If true, image will be converted to RGB.

Parameters:

signed - True for signed image, false for grayscale image.

applyInPlace

public void applyInPlace(FastBitmap fastBitmap)

Description copied from interface: IApplyInPlace

Apply filter to an image.

Specified by:

applyInPlace in interface IApplyInPlace

Parameters:

fastBitmap - Image to be processed.