org.jaitools.media.jai.rangelookup
Class RangeLookupDescriptor

java.lang.Object
  javax.media.jai.OperationDescriptorImpl
      org.jaitools.media.jai.rangelookup.RangeLookupDescriptor

All Implemented Interfaces:

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

public class RangeLookupDescriptor
extends javax.media.jai.OperationDescriptorImpl

Describes the "RangeLookup" operation.

This is a variation on the JAI javax.media.jai.LookupDescriptor. It works with a RangeLookupTable object in which each entry maps a source image value range to a destination image value.

Example of use...

 // Perform a lookup as follows:
 //   Src Value     Dest Value
 //     x < 5            1
 //   5 <= x < 10        2
 //  10 <= x <= 20       3
 //  any other value    99
 
 RenderedImage myIntImg = ...

 RangeLookupTable table = new RangeLookupTable(99);

 Range r = new Range(null, true, 5, false);  // x < 5
 table.add(r, 1);

 r = new Range(5, true, 10, false);  // 5 <= x < 10
 table.add(r, 2);

 r = new Range(10, true, 20, true);  // 10 <= x <= 20
 table.add(r, 2);

 ParameterBlockJAI pb = new ParameterBlockJAI("rangelookup");
 pb.setSource("source0", myIntImg);
 pb.setParameter("table", table);
 RenderedImage luImg = JAI.create("rangelookup", pb);
 

Since:

1.0

Version:

$Id$

Author:

Michael Bedward

See Also:

Range, RangeLookupTable, Serialized Form

Field Summary

Fields inherited from class javax.media.jai.OperationDescriptorImpl

resources, sourceNames, supportedModes

Fields inherited from interface javax.media.jai.OperationDescriptor

NO_PARAMETER_DEFAULT

Constructor Summary

RangeLookupDescriptor()
Constructor.

Method Summary

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

RangeLookupDescriptor

public RangeLookupDescriptor()

Constructor.