nom.tam.image.compression.tile

Class TiledImageCompressionOperation

java.lang.Object

nom.tam.image.tile.operation.AbstractTiledImageOperation<nom.tam.image.compression.tile.TileCompressionOperation>

nom.tam.image.compression.tile.TiledImageCompressionOperation

All Implemented Interfaces:

ITiledImageOperation

public class TiledImageCompressionOperation
extends AbstractTiledImageOperation<nom.tam.image.compression.tile.TileCompressionOperation>

This class represents a complete tiledImageOperation of tileOperations describing an image ordered from left to right and top down. the tileOperations all have the same geometry only the tileOperations at the right side and the bottom side can have different sizes.

Constructor Summary

Constructors

Constructor and Description
TiledImageCompressionOperation(BinaryTable binaryTable) create a TiledImageCompressionOperation based on a compressed image data.

Method Summary

Modifier and Type	Method and Description
void	compress(BinaryTableHDU hdu)
ICompressOption	compressOptions()
Buffer	decompress()
void	forceNoLoss(int x, int y, int width, int heigth)
protected BinaryTable	getBinaryTable()
ByteBuffer	getCompressedWholeArea()
ICompressorControl	getCompressorControl()
ICompressorControl	getGzipCompressorControl()
protected ImageNullPixelMask	getImageNullPixelMask()
protected void	initializeQuantAlgorithm()
TiledImageCompressionOperation	prepareUncompressedData(Buffer buffer)
ImageNullPixelMask	preserveNulls(long nullValue, String compressionAlgorithm) preserve null values, where the value representing null is specified as a parameter.
TiledImageCompressionOperation	read(Header header)
void	readPrimaryHeaders(Header header)
TiledImageCompressionOperation	setCompressAlgorithm(HeaderCard compressAlgorithmCard)
TiledImageCompressionOperation	setQuantAlgorithm(HeaderCard quantAlgorithmCard)

Methods inherited from class nom.tam.image.tile.operation.AbstractTiledImageOperation

areAxesUndefined, areTileAxesUndefined, createTiles, getBaseType, getBufferSize, getImageWidth, getNAxes, getNumberOfTileOperations, getTileAxes, getTileOperation, getTileOperations, setAxes, setBaseType, setTileAxes

Methods inherited from class java.lang.Object

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

Constructor Detail

TiledImageCompressionOperation

public TiledImageCompressionOperation(BinaryTable binaryTable)

create a TiledImageCompressionOperation based on a compressed image data.

Parameters:

binaryTable - the compressed image data.

Method Detail

compress

public void compress(BinaryTableHDU hdu)
              throws FitsException

Throws:

FitsException

compressOptions

public ICompressOption compressOptions()

decompress

public Buffer decompress()

forceNoLoss

public void forceNoLoss(int x,
                        int y,
                        int width,
                        int heigth)

getCompressedWholeArea

public ByteBuffer getCompressedWholeArea()

getCompressorControl

public ICompressorControl getCompressorControl()

getGzipCompressorControl

public ICompressorControl getGzipCompressorControl()

prepareUncompressedData

public TiledImageCompressionOperation prepareUncompressedData(Buffer buffer)
                                                       throws FitsException

Throws:

FitsException

preserveNulls

public ImageNullPixelMask preserveNulls(long nullValue,
                                        String compressionAlgorithm)

preserve null values, where the value representing null is specified as a parameter. This parameter is ignored for floating point values where NaN is used as null value.

Parameters:

nullValue - the value representing null for byte/short and integer pixel values

compressionAlgorithm - compression algorithm to use for the null pixel mask

Returns:

the created null pixel mask

read

public TiledImageCompressionOperation read(Header header)
                                    throws FitsException

Throws:

FitsException

readPrimaryHeaders

public void readPrimaryHeaders(Header header)
                        throws FitsException

Throws:

FitsException

setCompressAlgorithm

public TiledImageCompressionOperation setCompressAlgorithm(HeaderCard compressAlgorithmCard)

setQuantAlgorithm

public TiledImageCompressionOperation setQuantAlgorithm(HeaderCard quantAlgorithmCard)

getBinaryTable

protected BinaryTable getBinaryTable()

getImageNullPixelMask

protected ImageNullPixelMask getImageNullPixelMask()

initializeQuantAlgorithm

protected void initializeQuantAlgorithm()