com.bc.ceres.jai.operator

Class DFTConvolveDescriptor

java.lang.Object

javax.media.jai.OperationDescriptorImpl

com.bc.ceres.jai.operator.DFTConvolveDescriptor

All Implemented Interfaces:

Serializable, javax.media.jai.OperationDescriptor, javax.media.jai.RegistryElementDescriptor

public class DFTConvolveDescriptor
extends javax.media.jai.OperationDescriptorImpl

An OperationDescriptor describing the "DFTConvolve" operation.

This operation behaves as the JAI standard "Convolve" operation but uses a Fast Fourier Transformation for the convolution.

Resource List

Name	Value
GlobalName	DFTConvolve
LocalName	DFTConvolve
Vendor	com.sun.media.jai
Description	Performs kernel-based convolution on an image.
DocURL	http://java.sun.com/products/java-media/jai/forDevelopers/jai-apidocs/javax/media/jai/operator/ConvolveDescriptor.html
Version	1.0
arg0Desc	The convolution kernel.

Parameter List

Name	Class Type	Default Value
kernel	javax.media.jai.KernelJAI	NO_PARAMETER_DEFAULT

See Also:

OperationDescriptor, KernelJAI, 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

Constructors

Constructor and Description
DFTConvolveDescriptor() Constructor.

Method Summary

Modifier and Type	Method and Description
static javax.media.jai.RenderedOp	create(RenderedImage source0, javax.media.jai.KernelJAI kernel, RenderedImage kernelFT, RenderingHints hints) Performs kernel-based convolution on an image.
javax.media.jai.PropertyGenerator[]	getPropertyGenerators() Returns an array of PropertyGenerators implementing property inheritance for the "Convolve" operation.
protected boolean	validateParameters(String s, ParameterBlock parameterBlock, StringBuffer stringBuffer)

Methods inherited from class javax.media.jai.OperationDescriptorImpl

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

DFTConvolveDescriptor

public DFTConvolveDescriptor()

Constructor.

Method Detail

validateParameters

protected boolean validateParameters(String s,
                                     ParameterBlock parameterBlock,
                                     StringBuffer stringBuffer)

Overrides:

validateParameters in class javax.media.jai.OperationDescriptorImpl

getPropertyGenerators

public javax.media.jai.PropertyGenerator[] getPropertyGenerators()

Returns an array of PropertyGenerators implementing property inheritance for the "Convolve" operation.

Specified by:

getPropertyGenerators in interface javax.media.jai.OperationDescriptor

Overrides:

getPropertyGenerators in class javax.media.jai.OperationDescriptorImpl

Returns:

An array of property generators.

create

public static javax.media.jai.RenderedOp create(RenderedImage source0,
                                                javax.media.jai.KernelJAI kernel,
                                                RenderedImage kernelFT,
                                                RenderingHints hints)

Performs kernel-based convolution on an image.

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

Parameters:

source0 - RenderedImage source 0.

kernel - The convolution kernel.

kernelFT - The Fourier-transformed convolution kernel image, may be null.

hints - The RenderingHints to use. May be null.

Returns:

The RenderedOp destination.

Throws:

IllegalArgumentException - if source0 is null or if if kernel is null.

See Also:

JAI, ParameterBlockJAI, RenderedOp