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Java Source Code / Java Documentation » 6.0 JDK Modules » Java Advanced Imaging » javax.media.jai 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   javax.media.jai.Interpolation
      javax.media.jai.InterpolationTable
         javax.media.jai.InterpolationBicubic

InterpolationBicubic
final public class InterpolationBicubic extends InterpolationTable (Code)
A class representing bicubic interpolation.

InterpolationBicubic is a subclass of Interpolation that performs interpolation using the piecewise cubic polynomial:

 r(x) = (a + 2)|x|^3 - (a + 3)|x|^2         +  1 , 0 <= |x| < 1
 r(x) =       a|x|^3 -      5a|x|^2 + 8a|x| - 4a , 1 <= |x| < 2
 r(x) = 0                                        , otherwise
 
with 'a' set to -0.5. This definition is also sometimes known as "cubic convolution", using the parameter 'a' recommended by Rifman. (Reference: Digital Image Warping, George Wolberg, 1990, pp 129-131, IEEE Computer Society Press, ISBN 0-8186-8944-7)

A neighborhood extending one sample to the left of and above the central sample, and two samples to the right of and below the central sample is required to perform bicubic interpolation.

This implementation creates an InterpolationTable whose integer coefficients have eight bits of precision to the right of the binary point.

The diagrams below illustrate the pixels involved in one-dimensional interpolation. Point s0 is the interpolation kernel key position. xfrac and yfrac, indicated by the dots, represent the point of interpolation between two pixels. This value lies between 0.0 and 1.0 exclusive for floating point and 0 and 2subsampleBits exclusive for integer interpolations.

 
 Horizontal              Vertical
 s_    s0 .  s1    s2            s_                             
 ^                                                     
 xfrac                   s0                        
 .< yfrac                  
 s1                         
 s2                         
 
 

The diagram below illustrates the pixels involved in two-dimensional interpolation.

 
 s__    s_0    s_1    s_2                              
 s0_    s00    s01    s02                              
 .             < yfrac                      
 s1_    s10    s11    s12                              
 s2_    s20    s21    s22                              
 ^                                           
 xfrac                                        
 
 

The class is marked 'final' so that it may be more easily inlined.
See Also:   Interpolation




Constructor Summary
public  InterpolationBicubic(int subsampleBits)
     Constructs an InterpolationBicubic with a given subsample precision, in bits.



Constructor Detail
InterpolationBicubic
public InterpolationBicubic(int subsampleBits)(Code)
Constructs an InterpolationBicubic with a given subsample precision, in bits. This precision is applied to both axes.

This implementation creates an InterpolationTable whose integer coefficients have eight bits of precision to the right of the binary point.
Parameters:
  subsampleBits - the subsample precision.





Fields inherited from javax.media.jai.InterpolationTable
protected double[] dataHd(Code)(Java Doc)
protected float[] dataHf(Code)(Java Doc)
protected int[] dataHi(Code)(Java Doc)
protected double[] dataVd(Code)(Java Doc)
protected float[] dataVf(Code)(Java Doc)
protected int[] dataVi(Code)(Java Doc)
protected int precisionBits(Code)(Java Doc)

Methods inherited from javax.media.jai.InterpolationTable
public int[] getHorizontalTableData()(Code)(Java Doc)
public double[] getHorizontalTableDataDouble()(Code)(Java Doc)
public float[] getHorizontalTableDataFloat()(Code)(Java Doc)
public int getPrecisionBits()(Code)(Java Doc)
public int[] getVerticalTableData()(Code)(Java Doc)
public double[] getVerticalTableDataDouble()(Code)(Java Doc)
public float[] getVerticalTableDataFloat()(Code)(Java Doc)
public int interpolate(int s00, int s01, int s10, int s11, int xfrac, int yfrac)(Code)(Java Doc)
public int interpolate(int s__, int s_0, int s_1, int s_2, int s0_, int s00, int s01, int s02, int s1_, int s10, int s11, int s12, int s2_, int s20, int s21, int s22, int xfrac, int yfrac)(Code)(Java Doc)
public float interpolate(float s00, float s01, float s10, float s11, float xfrac, float yfrac)(Code)(Java Doc)
public float interpolate(float s__, float s_0, float s_1, float s_2, float s0_, float s00, float s01, float s02, float s1_, float s10, float s11, float s12, float s2_, float s20, float s21, float s22, float xfrac, float yfrac)(Code)(Java Doc)
public double interpolate(double s00, double s01, double s10, double s11, float xfrac, float yfrac)(Code)(Java Doc)
public double interpolate(double s__, double s_0, double s_1, double s_2, double s0_, double s00, double s01, double s02, double s1_, double s10, double s11, double s12, double s2_, double s20, double s21, double s22, float xfrac, float yfrac)(Code)(Java Doc)
public int interpolateF(int s__, int s_0, int s_1, int s_2, int s0_, int s00, int s01, int s02, int s1_, int s10, int s11, int s12, int s2_, int s20, int s21, int s22, int xfrac, int yfrac)(Code)(Java Doc)
public int interpolateH(int[] samples, int xfrac)(Code)(Java Doc)
public int interpolateH(int s0, int s1, int xfrac)(Code)(Java Doc)
public int interpolateH(int s_, int s0, int s1, int s2, int xfrac)(Code)(Java Doc)
public float interpolateH(float[] samples, float xfrac)(Code)(Java Doc)
public float interpolateH(float s0, float s1, float xfrac)(Code)(Java Doc)
public float interpolateH(float s_, float s0, float s1, float s2, float xfrac)(Code)(Java Doc)
public double interpolateH(double[] samples, float xfrac)(Code)(Java Doc)
public double interpolateH(double s0, double s1, float xfrac)(Code)(Java Doc)
public double interpolateH(double s_, double s0, double s1, double s2, float xfrac)(Code)(Java Doc)
public int interpolateV(int[] samples, int yfrac)(Code)(Java Doc)
public int interpolateV(int s0, int s1, int yfrac)(Code)(Java Doc)
public int interpolateV(int s_, int s0, int s1, int s2, int yfrac)(Code)(Java Doc)
public float interpolateV(float[] samples, float yfrac)(Code)(Java Doc)
public float interpolateV(float s0, float s1, float yfrac)(Code)(Java Doc)
public float interpolateV(float s_, float s0, float s1, float s2, float yfrac)(Code)(Java Doc)
public double interpolateV(double[] samples, float yfrac)(Code)(Java Doc)
public double interpolateV(double s0, double s1, float yfrac)(Code)(Java Doc)
public double interpolateV(double s_, double s0, double s1, double s2, float yfrac)(Code)(Java Doc)

Fields inherited from javax.media.jai.Interpolation
final public static int INTERP_BICUBIC(Code)(Java Doc)
final public static int INTERP_BICUBIC_2(Code)(Java Doc)
final public static int INTERP_BILINEAR(Code)(Java Doc)
final public static int INTERP_NEAREST(Code)(Java Doc)
protected int bottomPadding(Code)(Java Doc)
protected int height(Code)(Java Doc)
protected int leftPadding(Code)(Java Doc)
protected int rightPadding(Code)(Java Doc)
protected int subsampleBitsH(Code)(Java Doc)
protected int subsampleBitsV(Code)(Java Doc)
protected int topPadding(Code)(Java Doc)
protected int width(Code)(Java Doc)

Methods inherited from javax.media.jai.Interpolation
public int getBottomPadding()(Code)(Java Doc)
public int getHeight()(Code)(Java Doc)
public static synchronized Interpolation getInstance(int type)(Code)(Java Doc)
public int getLeftPadding()(Code)(Java Doc)
public int getRightPadding()(Code)(Java Doc)
public int getSubsampleBitsH()(Code)(Java Doc)
public int getSubsampleBitsV()(Code)(Java Doc)
public int getTopPadding()(Code)(Java Doc)
public int getWidth()(Code)(Java Doc)
public int interpolate(int[][] samples, int xfrac, int yfrac)(Code)(Java Doc)
public int interpolate(int s00, int s01, int s10, int s11, int xfrac, int yfrac)(Code)(Java Doc)
public int interpolate(int s__, int s_0, int s_1, int s_2, int s0_, int s00, int s01, int s02, int s1_, int s10, int s11, int s12, int s2_, int s20, int s21, int s22, int xfrac, int yfrac)(Code)(Java Doc)
public float interpolate(float[][] samples, float xfrac, float yfrac)(Code)(Java Doc)
public float interpolate(float s00, float s01, float s10, float s11, float xfrac, float yfrac)(Code)(Java Doc)
public float interpolate(float s__, float s_0, float s_1, float s_2, float s0_, float s00, float s01, float s02, float s1_, float s10, float s11, float s12, float s2_, float s20, float s21, float s22, float xfrac, float yfrac)(Code)(Java Doc)
public double interpolate(double[][] samples, float xfrac, float yfrac)(Code)(Java Doc)
public double interpolate(double s00, double s01, double s10, double s11, float xfrac, float yfrac)(Code)(Java Doc)
public double interpolate(double s__, double s_0, double s_1, double s_2, double s0_, double s00, double s01, double s02, double s1_, double s10, double s11, double s12, double s2_, double s20, double s21, double s22, float xfrac, float yfrac)(Code)(Java Doc)
abstract public int interpolateH(int[] samples, int xfrac)(Code)(Java Doc)
public int interpolateH(int s0, int s1, int xfrac)(Code)(Java Doc)
public int interpolateH(int s_, int s0, int s1, int s2, int xfrac)(Code)(Java Doc)
abstract public float interpolateH(float[] samples, float xfrac)(Code)(Java Doc)
public float interpolateH(float s0, float s1, float xfrac)(Code)(Java Doc)
public float interpolateH(float s_, float s0, float s1, float s2, float xfrac)(Code)(Java Doc)
abstract public double interpolateH(double[] samples, float xfrac)(Code)(Java Doc)
public double interpolateH(double s0, double s1, float xfrac)(Code)(Java Doc)
public double interpolateH(double s_, double s0, double s1, double s2, float xfrac)(Code)(Java Doc)
public int interpolateV(int[] samples, int yfrac)(Code)(Java Doc)
public int interpolateV(int s0, int s1, int yfrac)(Code)(Java Doc)
public int interpolateV(int s_, int s0, int s1, int s2, int yfrac)(Code)(Java Doc)
public float interpolateV(float[] samples, float yfrac)(Code)(Java Doc)
public float interpolateV(float s0, float s1, float yfrac)(Code)(Java Doc)
public float interpolateV(float s_, float s0, float s1, float s2, float yfrac)(Code)(Java Doc)
public double interpolateV(double[] samples, float yfrac)(Code)(Java Doc)
public double interpolateV(double s0, double s1, float yfrac)(Code)(Java Doc)
public double interpolateV(double s_, double s0, double s1, double s2, float yfrac)(Code)(Java Doc)
public boolean isSeparable()(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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