Java Doc for PiecewiseDescriptor.java in  » 6.0-JDK-Modules » Java-Advanced-Imaging » javax » media » jai » operator » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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


java.lang.Object
   javax.media.jai.OperationDescriptorImpl
      javax.media.jai.operator.PiecewiseDescriptor

PiecewiseDescriptor
public class PiecewiseDescriptor extends OperationDescriptorImpl (Code)
An OperationDescriptor describing the "Piecewise" operation.

The "Piecewise" operation performs a piecewise linear mapping of the pixel values of an image. The piecewise linear mapping is described by a set of breakpoints which are provided as an array of the form

float breakPoints[N][2][numBreakPoints]
where the value of N may be either unity or the number of bands in the source image. If N is unity then the same set of breakpoints will be applied to all bands in the image. The abscissas of the supplied breakpoints must be monotonically increasing.

The pixel values of the destination image are defined by the pseudocode:

 if (src[x][y][b] < breakPoints[b][0][0]) {
 dst[x][y][b] = breakPoints[b][1][0]);
 } else if (src[x][y][b] > breakPoints[b][0][numBreakPoints-1]) {
 dst[x][y][b] = breakPoints[b][1][numBreakPoints-1]);
 } else {
 int i = 0;
 while(breakPoints[b][0][i+1] < src[x][y][b]) {
 i++;
 }
 dst[x][y][b] = breakPoints[b][1][i] +
 (src[x][y][b] - breakPoints[b][0][i])*
 (breakPoints[b][1][i+1] - breakPoints[b][1][i])/
 (breakPoints[b][0][i+1] - breakPoints[b][0][i]);
 }
 

Resource List
Name Value
GlobalName Piecewise
LocalName Piecewise
Vendor com.sun.media.jai
Description Applies a piecewise pixel value mapping.
DocURL http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/operator/PiecewiseDescriptor.html
Version 1.0
arg0Desc The breakpoint array.

Parameter List
Name Class Type Default Value
breakPoints float[][][] identity mapping on [0, 255]


See Also:   java.awt.image.DataBuffer
See Also:   javax.media.jai.ImageLayout
See Also:   javax.media.jai.OperationDescriptor



Constructor Summary
public  PiecewiseDescriptor()
     Constructor.

Method Summary
public static  RenderedOpcreate(RenderedImage source0, float[][][] breakPoints, RenderingHints hints)
     Applies a piecewise pixel value mapping.

Creates a ParameterBlockJAI from all supplied arguments except hints and invokes JAI.create(StringParameterBlockRenderingHints) .
See Also:   JAI
See Also:   ParameterBlockJAI
See Also:   RenderedOp
Parameters:
  source0 - RenderedImage source 0.
Parameters:
  breakPoints - The breakpoint array.May be null.
Parameters:
  hints - The RenderingHints to use.May be null.

public static  RenderableOpcreateRenderable(RenderableImage source0, float[][][] breakPoints, RenderingHints hints)
     Applies a piecewise pixel value mapping.

Creates a ParameterBlockJAI from all supplied arguments except hints and invokes JAI.createRenderable(StringParameterBlockRenderingHints) .
See Also:   JAI
See Also:   ParameterBlockJAI
See Also:   RenderableOp
Parameters:
  source0 - RenderableImage source 0.
Parameters:
  breakPoints - The breakpoint array.May be null.
Parameters:
  hints - The RenderingHints to use.May be null.

public  booleanvalidateArguments(String modeName, ParameterBlock args, StringBuffer msg)
     Validates the input source and parameter.


Constructor Detail
PiecewiseDescriptor
public PiecewiseDescriptor()(Code)
Constructor.




Method Detail
create
public static RenderedOp create(RenderedImage source0, float[][][] breakPoints, RenderingHints hints)(Code)
Applies a piecewise pixel value mapping.

Creates a ParameterBlockJAI from all supplied arguments except hints and invokes JAI.create(StringParameterBlockRenderingHints) .
See Also:   JAI
See Also:   ParameterBlockJAI
See Also:   RenderedOp
Parameters:
  source0 - RenderedImage source 0.
Parameters:
  breakPoints - The breakpoint array.May be null.
Parameters:
  hints - The RenderingHints to use.May be null. The RenderedOp destination.
throws:
  IllegalArgumentException - if source0 is null.




createRenderable
public static RenderableOp createRenderable(RenderableImage source0, float[][][] breakPoints, RenderingHints hints)(Code)
Applies a piecewise pixel value mapping.

Creates a ParameterBlockJAI from all supplied arguments except hints and invokes JAI.createRenderable(StringParameterBlockRenderingHints) .
See Also:   JAI
See Also:   ParameterBlockJAI
See Also:   RenderableOp
Parameters:
  source0 - RenderableImage source 0.
Parameters:
  breakPoints - The breakpoint array.May be null.
Parameters:
  hints - The RenderingHints to use.May be null. The RenderableOp destination.
throws:
  IllegalArgumentException - if source0 is null.




validateArguments
public boolean validateArguments(String modeName, ParameterBlock args, StringBuffer msg)(Code)
Validates the input source and parameter.

In addition to the standard checks performed by the superclass method, this method checks that the number of bands in "breakPoints" is either 1 or the number of bands in the source image, the second breakpoint array dimension is 2, the third dimension is the same for abscissas and ordinates, and that the absicssas are monotonically increasing.




Fields inherited from javax.media.jai.OperationDescriptorImpl
final protected String[][] resources(Code)(Java Doc)
final protected String[] sourceNames(Code)(Java Doc)
final protected String[] supportedModes(Code)(Java Doc)

Methods inherited from javax.media.jai.OperationDescriptorImpl
public boolean arePropertiesSupported()(Code)(Java Doc)
protected static Class getDefaultSourceClass(String modeName)(Code)(Java Doc)
public Class getDestClass(String modeName)(Code)(Java Doc)
public Class getDestClass()(Code)(Java Doc)
public Object getInvalidRegion(String modeName, ParameterBlock oldParamBlock, RenderingHints oldHints, ParameterBlock newParamBlock, RenderingHints newHints, OperationNode node)(Code)(Java Doc)
public String getName()(Code)(Java Doc)
public int getNumParameters()(Code)(Java Doc)
public int getNumSources()(Code)(Java Doc)
public Class[] getParamClasses()(Code)(Java Doc)
public Object getParamDefaultValue(int index)(Code)(Java Doc)
public Object[] getParamDefaults()(Code)(Java Doc)
public Number getParamMaxValue(int index)(Code)(Java Doc)
public Number getParamMinValue(int index)(Code)(Java Doc)
public String[] getParamNames()(Code)(Java Doc)
public ParameterListDescriptor getParameterListDescriptor(String modeName)(Code)(Java Doc)
public PropertyGenerator[] getPropertyGenerators(String modeName)(Code)(Java Doc)
public PropertyGenerator[] getPropertyGenerators()(Code)(Java Doc)
public Class getRenderableDestClass()(Code)(Java Doc)
public Class[] getRenderableSourceClasses()(Code)(Java Doc)
public ResourceBundle getResourceBundle(Locale locale)(Code)(Java Doc)
public String[][] getResources(Locale locale)(Code)(Java Doc)
public Class[] getSourceClasses(String modeName)(Code)(Java Doc)
public Class[] getSourceClasses()(Code)(Java Doc)
public String[] getSourceNames()(Code)(Java Doc)
public String[] getSupportedModes()(Code)(Java Doc)
public boolean isImmediate()(Code)(Java Doc)
public boolean isModeSupported(String modeName)(Code)(Java Doc)
public boolean isRenderableSupported()(Code)(Java Doc)
public boolean isRenderedSupported()(Code)(Java Doc)
protected static Class[][] makeDefaultSourceClassList(String[] supportedModes, int numSources)(Code)(Java Doc)
public boolean validateArguments(String modeName, ParameterBlock args, StringBuffer msg)(Code)(Java Doc)
public boolean validateArguments(ParameterBlock args, StringBuffer msg)(Code)(Java Doc)
protected boolean validateParameters(String modeName, ParameterBlock args, StringBuffer msg)(Code)(Java Doc)
protected boolean validateParameters(ParameterBlock args, StringBuffer msg)(Code)(Java Doc)
public boolean validateRenderableArguments(ParameterBlock args, StringBuffer msg)(Code)(Java Doc)
protected boolean validateRenderableSources(ParameterBlock args, StringBuffer msg)(Code)(Java Doc)
protected boolean validateSources(String modeName, ParameterBlock args, StringBuffer msg)(Code)(Java Doc)
protected boolean validateSources(ParameterBlock args, StringBuffer msg)(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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