jigl.image
Class ImageKernel

java.lang.Object
  |
  +--jigl.image.RealGrayImage
        |
        +--jigl.image.ImageKernel

All Implemented Interfaces:

Image

public class ImageKernel

extends RealGrayImage

ImageKernel is an extension of GrayImage with some pre-defined kernals.

Field Summary

static int	D_XX D_xx Kernel.
static int	D_XY D_xy Kernel.
static int	D_YY D_yy Kernel.
static int	LAPLACIAN Laplacian Kernel.
static int	LAPLACIAN_8 Laplacian 8 Kernel.
static int	PREWITT_X Prewitt Kernel with X orientation.
static int	PREWITT_Y Prewitt Kernel with Y orientation.
static int	SOBEL_X Sorbel Kernel with X orientation.
static int	SOBEL_Y Sobel Kernel with Y orientation.
static int	UNIFORM Uniform Kernel.
static int	UNSHARP Unsharpen Kernel.
static int	UNSHARP_8 Unsharpen 8 Kernel.

Fields inherited from class jigl.image.RealGrayImage

data, X, Y

Constructor Summary

ImageKernel(float[][] dat)
Creates a kernel out of the given array.

ImageKernel(float val, int dimension)
Creates a uniform kernel of specified size

ImageKernel(int val)
Creates a kernel of one of the predefined types.

ImageKernel(RealGrayImage img)
Creates an ImageKernel from a RealGrayImage

Method Summary

void	normalize() Normalize the kernel by total grayscales.
void	normalize255() "Normalizes" the ImageKernel by 255.

Methods inherited from class jigl.image.RealGrayImage

absSum, add, add, add, add, add, add, addbuffer, addbuffer, addSum, byteSize, byteSize, clear, clear, clip, clip, copy, copy, diff, divide, divide, divide, divide, divide, divide, get, getData, getJavaImage, max, max, median, median, min, min, multiply, multiply, multiply, multiply, multiply, multiply, set, set, sqrSum, subtract, subtract, subtract, subtract, subtract, subtract, toString, toString, X, Y

Methods inherited from class java.lang.Object

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

Field Detail

UNIFORM

public static final int UNIFORM

Uniform Kernel.

1	1	1
1	1	1
1	1	1

See Also:

Constant Field Values

SOBEL_X

public static final int SOBEL_X

Sorbel Kernel with X orientation.

-1	0	1
-2	0	2
-1	0	1

See Also:

Constant Field Values

SOBEL_Y

public static final int SOBEL_Y

Sobel Kernel with Y orientation.

-1	-2	-1
0	0	0
1	2	1

See Also:

Constant Field Values

PREWITT_X

public static final int PREWITT_X

Prewitt Kernel with X orientation.

-1	0	1
-1	0	1
-1	0	1

See Also:

Constant Field Values

PREWITT_Y

public static final int PREWITT_Y

Prewitt Kernel with Y orientation.

-1	-1	-1
0	0	0
1	1	1

See Also:

Constant Field Values

LAPLACIAN

public static final int LAPLACIAN

Laplacian Kernel.

0	1	0
1	4	1
0	1	0

See Also:

Constant Field Values

LAPLACIAN_8

public static final int LAPLACIAN_8

Laplacian 8 Kernel.

1	1	1
1	-8	1
1	1	1

See Also:

Constant Field Values

UNSHARP

public static final int UNSHARP

Unsharpen Kernel.

0	-1	0
-1	5	-1
0	-1	0

See Also:

Constant Field Values

UNSHARP_8

public static final int UNSHARP_8

Unsharpen 8 Kernel.

-1	-1	-1
-1	9	-1
-1	-1	-1

See Also:

Constant Field Values

D_XX

public static final int D_XX

D_xx Kernel.

1	-2	1
1	-2	1
1	-2	1

See Also:

Constant Field Values

D_YY

public static final int D_YY

D_yy Kernel.

1	1	1
-2	-2	-2
1	1	1

See Also:

Constant Field Values

D_XY

public static final int D_XY

D_xy Kernel.

1	0	-1
0	0	0
-1	0	1

See Also:

Constant Field Values

Constructor Detail

ImageKernel

public ImageKernel(int val)
            throws InvalidKernelException

Creates a kernel of one of the predefined types. val should be between 0 and 11.

         0 - UNIFORM		1 - SOBEL_X		2 - SOBEL_Y
         3 - PREWITT_X		4 - PREWITT_Y		5 - LAPLACIAN
         6 - LAPLACIAN_8		7 - UNSHARP		8 - UNSHARP_8
         9 - D_XX		10 - D_YY		11 - D_XY
         

Parameters:

val - kernel type

See Also:

UNIFORM, SOBEL_X, SOBEL_Y, PREWITT_X, PREWITT_Y, LAPLACIAN, LAPLACIAN_8, UNSHARP, UNSHARP_8, D_XX, D_YY, D_XY

ImageKernel

public ImageKernel(float val,
                   int dimension)

Creates a uniform kernel of specified size

Parameters:

val - uniform value for the kernel

dimension - size of kernel (dimension X dimension)

ImageKernel

public ImageKernel(float[][] dat)

Creates a kernel out of the given array. The kernel created will have dimensions equal to the number of elements in the first row.

Parameters:

dat - two-dimensional data array

ImageKernel

public ImageKernel(RealGrayImage img)

Creates an ImageKernel from a RealGrayImage

Method Detail

normalize255

public void normalize255()

"Normalizes" the ImageKernel by 255. However the result kernel is not totally normalized.

normalize

public void normalize()

Normalize the kernel by total grayscales.