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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 SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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