Catalano.Math.Functions

Class Gabor

java.lang.Object

Catalano.Math.Functions.Gabor

public final class Gabor
extends java.lang.Object

Gabor function.

See Also:

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

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Gabor.Config Gabor configuration.

Method Summary

Modifier and Type	Method and Description
static double	Function1D(double x, double mean, double amplitude, double position, double width, double phase, double frequency) 1-D Gabor function.
static ComplexNumber	Function2D(int x, int y, double wavelength, double orientation, double phaseOffset, double gaussVariance, double aspectRatio) 2-D Complex Gabor function.
static double	ImaginaryFunction2D(int x, int y, double wavelength, double orientation, double phaseOffset, double gaussVariance, double aspectRatio) 2-D Gabor function.
static double[][]	Kernel2D(int size, double wavelength, double orientation, double phaseOffset, double gaussVariance, double aspectRatio) 2-D Gabor kernel.
static double[][]	Kernel2D(int size, double wavelength, double orientation, double phaseOffset, double gaussVariance, double aspectRatio, Gabor.Config config) 2-D Gabor kernel.
static double	RealFunction2D(int x, int y, double wavelength, double orientation, double phaseOffset, double gaussVariance, double aspectRatio) 2-D Gabor function.

Methods inherited from class java.lang.Object

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

Method Detail

Function1D

public static double Function1D(double x,
                                double mean,
                                double amplitude,
                                double position,
                                double width,
                                double phase,
                                double frequency)

1-D Gabor function.

Parameters:

x - Value.

mean - Mean.

amplitude - Amplitude.

position - Position.

width - Width.

phase - Phase.

frequency - Frequency.

Returns:

Gabor response.

Function2D

public static ComplexNumber Function2D(int x,
                                       int y,
                                       double wavelength,
                                       double orientation,
                                       double phaseOffset,
                                       double gaussVariance,
                                       double aspectRatio)

2-D Complex Gabor function.

Parameters:

x - X axis coordinate.

y - Y axis coordinate.

wavelength - Wavelength.

orientation - Orientation.

phaseOffset - Phase offset.

gaussVariance - Gaussian variance.

aspectRatio - Aspect ratio.

Returns:

Gabor response.

RealFunction2D

public static double RealFunction2D(int x,
                                    int y,
                                    double wavelength,
                                    double orientation,
                                    double phaseOffset,
                                    double gaussVariance,
                                    double aspectRatio)

2-D Gabor function. Compute only real part.

Parameters:

x - X axis coordinate.

y - Y axis coordinate.

wavelength - Wavelength.

orientation - Orientation.

phaseOffset - Phase offset.

gaussVariance - Gaussian variance.

aspectRatio - Aspect ratio.

Returns:

Gabor response.

ImaginaryFunction2D

public static double ImaginaryFunction2D(int x,
                                         int y,
                                         double wavelength,
                                         double orientation,
                                         double phaseOffset,
                                         double gaussVariance,
                                         double aspectRatio)

2-D Gabor function. Compute only imaginary part.

Parameters:

x - X axis coordinate.

y - Y axis coordinate.

wavelength - Wavelength.

orientation - Orientation.

phaseOffset - Phase offset.

gaussVariance - Gaussian variance.

aspectRatio - Aspect ratio.

Returns:

Gabor response.

Kernel2D

public static double[][] Kernel2D(int size,
                                  double wavelength,
                                  double orientation,
                                  double phaseOffset,
                                  double gaussVariance,
                                  double aspectRatio)

2-D Gabor kernel.

Parameters:

size - Kernel size (should be odd).

wavelength - Wavelength.

orientation - Orientation.

phaseOffset - Phase offset.

gaussVariance - Gaussian variance.

aspectRatio - Aspect ratio.

Returns:

Gabor kernel.

Kernel2D

public static double[][] Kernel2D(int size,
                                  double wavelength,
                                  double orientation,
                                  double phaseOffset,
                                  double gaussVariance,
                                  double aspectRatio,
                                  Gabor.Config config)

2-D Gabor kernel.

Parameters:

size - Kernel size (should be odd).

wavelength - Wavelength.

orientation - Orientation.

phaseOffset - Phase offset.

gaussVariance - Gaussian variance.

aspectRatio - Aspect ratio.

config - Gabor configuration.

Returns:

Gabor kernel.