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Java Standard Edition (SE)

Kernel


java.awt.image

Class 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 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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