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## java.awt.image
Class Kernel

    java.lang.Object
      java.awt.image.Kernel

All Implemented Interfaces:
  Cloneable

public class Kernel
extends Object
implements Cloneable

The `Kernel` class defines a matrix that describes how a specified pixel and its surrounding pixels affect the value computed for the pixel's position in the output image of a filtering operation. The X origin and Y origin indicate the kernel matrix element that corresponds to the pixel position for which an output value is being computed.

See Also:
  `ConvolveOp`

Constructor Summary
`Kernel(int width, int height, float[] data)` Constructs a `Kernel` object from an array of floats.

Method Summary
`Object` | `clone()` Clones this object.
`int` | `getHeight()` Returns the height of this `Kernel`.
`float[]` | `getKernelData(float[] data)` Returns the kernel data in row major order.
`int` | `getWidth()` Returns the width of this `Kernel`.
`int` | `getXOrigin()` Returns the X origin of this `Kernel`.
`int` | `getYOrigin()` Returns the Y origin of this `Kernel`.

Methods inherited from class java.lang.Object
`equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### Kernel

    public Kernel(int width,
                  int height,
                  float[] data)

  Constructs a `Kernel` object from an array of floats. The first `width`*`height` elements of the `data` array are copied. If the length of the `data` array is less than width*height, an `IllegalArgumentException` is thrown. The X origin is (width-1)/2 and the Y origin is (height-1)/2.

Parameters:
  `width` - width of the kernel
  `height` - height of the kernel
  `data` - kernel data in row major order
Throws:
  `IllegalArgumentException` - if the length of `data` is less than the product of `width` and `height`

Method Detail

### getXOrigin

    public final int getXOrigin()

  Returns the X origin of this `Kernel`.

  Returns:
    the X origin.

### getYOrigin

    public final int getYOrigin()

  Returns the Y origin of this `Kernel`.

  Returns:
    the Y origin.

### getWidth

    public final int getWidth()

  Returns the width of this `Kernel`.

  Returns:
    the width of this `Kernel`.

### getHeight

    public final int getHeight()

  Returns the height of this `Kernel`.

  Returns:
    the height of this `Kernel`.

### getKernelData

    public final float[] getKernelData(float[] data)

  Returns the kernel data in row major order. The `data` array is returned. If `data` is `null`, a new array is allocated.

  Parameters:
    `data` - if non-null, contains the returned kernel data
  Returns:
    the `data` array containing the kernel data in row major order or, if `data` is `null`, a newly allocated array containing the kernel data in row major order
  Throws:
    `IllegalArgumentException` - if `data` is less than the size of this `Kernel`

### clone

    public Object clone()

  Clones this object.

  Overrides:
    `clone` in class `Object`
  Returns:
    a clone of this object.
  See Also:
    `Cloneable`

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

Copyright 2003 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.