javax.media.jai.operator
Class ErrorDiffusionDescriptor

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

All Implemented Interfaces:

OperationDescriptor, RegistryElementDescriptor, Serializable

public class ErrorDiffusionDescriptor

extends OperationDescriptorImpl

An OperationDescriptor describing the "ErrorDiffusion" operation.

The "ErrorDiffusion" operation performs color quantization by finding the nearest color to each pixel in a supplied color map and "diffusing" the color quantization error below and to the right of the pixel.

Resource List

Name	Value
GlobalName	ErrorDiffusion
LocalName	ErrorDiffusion
Vendor	com.sun.media.jai
Description	Performs error diffusion color quantization using a specified color map and error filter.
DocURL	http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/operator/ErrorDiffusionDescriptor.html
Version	1.0
arg0Desc	The color map.
arg1Desc	The error filter kernel.

Parameter List

Name	Class Type	Default Value
colorMap	javax.media.jai.LookupTableJAI	NO_PARAMETER_DEFAULT
errorKernel	javax.media.jai.KernelJAI	javax.media.jai.KernelJAI.ERROR_FILTER_FLOYD_STEINBERG

See Also:

LookupTableJAI, KernelJAI, ColorCube, OperationDescriptor, Serialized Form

Field Summary

Fields inherited from class javax.media.jai.OperationDescriptorImpl

sourceNames, supportedModes

Fields inherited from interface javax.media.jai.OperationDescriptor

NO_PARAMETER_DEFAULT

Constructor Summary

ErrorDiffusionDescriptor()
Constructor.

Method Summary

static RenderedOp

create(RenderedImage source0, LookupTableJAI colorMap, KernelJAI errorKernel, RenderingHints hints) Performs error diffusion color quantization using a specified color map and error filter.

Methods inherited from class javax.media.jai.OperationDescriptorImpl

arePropertiesSupported, getDefaultSourceClass, getDestClass, getDestClass, getInvalidRegion, getName, getNumParameters, getNumSources, getParamClasses, getParamDefaults, getParamDefaultValue, getParameterListDescriptor, getParamMaxValue, getParamMinValue, getParamNames, getPropertyGenerators, getPropertyGenerators, getRenderableDestClass, getRenderableSourceClasses, getResourceBundle, getResources, getSourceClasses, getSourceClasses, getSourceNames, getSupportedModes, isImmediate, isModeSupported, isRenderableSupported, isRenderedSupported, makeDefaultSourceClassList, validateArguments, validateArguments, validateParameters, validateParameters, validateRenderableArguments, validateRenderableSources, validateSources, validateSources

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ErrorDiffusionDescriptor

public ErrorDiffusionDescriptor()

Constructor.

Method Detail

create

public static RenderedOp create(RenderedImage source0,
                                LookupTableJAI colorMap,
                                KernelJAI errorKernel,
                                RenderingHints hints)

Performs error diffusion color quantization using a specified color map and error filter.

Creates a ParameterBlockJAI from all supplied arguments except hints and invokes JAI.create(String,ParameterBlock,RenderingHints).

Parameters:

source0 - RenderedImage source 0.

colorMap - The color map.

errorKernel - The error filter kernel. May be null.

hints - The RenderingHints to use. May be null.

Returns:

The RenderedOp destination.

Throws:

IllegalArgumentException - if source0 is null.

IllegalArgumentException - if colorMap is null.

See Also:

JAI, ParameterBlockJAI, RenderedOp