org.jaitools.media.jai.rangelookup
Class RangeLookupOpImage

java.lang.Object
  javax.media.jai.PlanarImage
      javax.media.jai.OpImage
          javax.media.jai.PointOpImage
              org.jaitools.media.jai.rangelookup.RangeLookupOpImage

All Implemented Interfaces:

RenderedImage, javax.media.jai.ImageJAI, javax.media.jai.PropertyChangeEmitter, javax.media.jai.PropertySource, javax.media.jai.WritablePropertySource

public class RangeLookupOpImage
extends javax.media.jai.PointOpImage

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.

Since:

1.0

Author:

Michael Bedward, Simone Giannecchini, GeoSolutions

See Also:

RangeLookupDescriptor

Field Summary

Fields inherited from class javax.media.jai.OpImage

cache, cobbleSources, OP_COMPUTE_BOUND, OP_IO_BOUND, OP_NETWORK_BOUND, tileCacheMetric, tileRecycler

Fields inherited from class javax.media.jai.PlanarImage

colorModel, eventManager, height, minX, minY, properties, sampleModel, tileFactory, tileGridXOffset, tileGridYOffset, tileHeight, tileWidth, width

Constructor Summary

RangeLookupOpImage(RenderedImage source, Map config, javax.media.jai.ImageLayout layout, RangeLookupTable table, Number defaultValue)
Constructor

Method Summary

protected void

computeRect(Raster[] sources, WritableRaster dest, Rectangle destRect) Do lookups for the specified destination rectangle

Methods inherited from class javax.media.jai.PointOpImage

computeTile, dispose, isColormapOperation, mapDestRect, mapSourceRect, permitInPlaceOperation

Methods inherited from class javax.media.jai.OpImage

addTileToCache, cancelTiles, computeRect, computesUniqueTiles, createTile, getExpandedNumBands, getFormatTags, getOperationComputeType, getTile, getTileCache, getTileCacheMetric, getTileDependencies, getTileFromCache, getTileRecycler, getTiles, hasExtender, mapDestPoint, mapSourcePoint, prefetchTiles, queueTiles, recycleTile, setTileCache, vectorize, vectorize, vectorize

Methods inherited from class javax.media.jai.PlanarImage

addPropertyChangeListener, addPropertyChangeListener, addSink, addSink, addSource, addTileComputationListener, copyData, copyData, copyExtendedData, createColorModel, createSnapshot, createWritableRaster, finalize, getAsBufferedImage, getAsBufferedImage, getBounds, getColorModel, getData, getData, getDefaultColorModel, getExtendedData, getGraphics, getHeight, getImageID, getMaxTileX, getMaxTileY, getMaxX, getMaxY, getMinTileX, getMinTileY, getMinX, getMinY, getNumBands, getNumSources, getNumXTiles, getNumYTiles, getProperties, getProperty, getPropertyClass, getPropertyNames, getPropertyNames, getSampleModel, getSinks, getSource, getSourceImage, getSourceObject, getSources, getSplits, getTileComputationListeners, getTileFactory, getTileGridXOffset, getTileGridYOffset, getTileHeight, getTileIndices, getTileRect, getTiles, getTileWidth, getWidth, overlapsMultipleTiles, removeProperty, removePropertyChangeListener, removePropertyChangeListener, removeSink, removeSink, removeSinks, removeSource, removeSources, removeTileComputationListener, setImageLayout, setProperties, setProperty, setSource, setSources, tileXToX, tileXToX, tileYToY, tileYToY, toString, wrapRenderedImage, XToTileX, XToTileX, YToTileY, YToTileY

Methods inherited from class java.lang.Object

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

Constructor Detail

RangeLookupOpImage

public RangeLookupOpImage(RenderedImage source,
                          Map config,
                          javax.media.jai.ImageLayout layout,
                          RangeLookupTable table,
                          Number defaultValue)

Constructor

Parameters:

source - a RenderedImage.

config - configurable attributes of the image

layout - an ImageLayout optionally containing the tile grid layout, SampleModel, and ColorModel, or null.

table - an instance of RangeLookupTable that defines the mappings from source value ranges to destination values

defaultValue - either a value to use for all unmatched source values or null to indicate that unmatched values should pass-through to the destination

See Also:

RangeLookupDescriptor

Method Detail

computeRect

protected void computeRect(Raster[] sources,
                           WritableRaster dest,
                           Rectangle destRect)

Do lookups for the specified destination rectangle

Overrides:

computeRect in class javax.media.jai.OpImage

Parameters:

sources - an array of source Rasters

dest - a WritableRaster tile containing the area to be computed.

destRect - the rectangle within dest to be processed.