Package nom.tam.image.compression.tile.mask

Class NullPixelMaskRestorer

java.lang.Object

nom.tam.image.compression.tile.mask.AbstractNullPixelMask

nom.tam.image.compression.tile.mask.NullPixelMaskRestorer

public class NullPixelMaskRestorer
extends AbstractNullPixelMask

(for internal use) Restores blank (null) values in deccompressed images.

See Also:

• CompressedImageHDU

Field Summary

Fields inherited from class nom.tam.image.compression.tile.mask.AbstractNullPixelMask

NULL_INDICATOR

Constructor Summary

Constructors

Constructor	Description
NullPixelMaskRestorer(TileBuffer tileBuffer, int tileIndex, long nullValue, ICompressorControl compressorControl)	Creates a new instance for restoring the null values to a specific image tile when decompressing the tile.

Method Summary

Modifier and Type	Method	Description
void	restoreNulls()	Restores the original blanking values in the decompressed image based on the null pixel mask that was stored along with the compressed data.

Methods inherited from class nom.tam.image.compression.tile.mask.AbstractNullPixelMask

getCompressorControl, getMask, getMaskBytes, getNullValue, getTileBuffer, getTileIndex, initializedMask, setMask

Methods inherited from class java.lang.Object

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

Constructor Details

NullPixelMaskRestorer

public NullPixelMaskRestorer(TileBuffer tileBuffer,
 int tileIndex,
 long nullValue,
 ICompressorControl compressorControl)

Creates a new instance for restoring the null values to a specific image tile when decompressing the tile.

Parameters:

tileBuffer - the buffer containing the serialized tile data (still uncompressed)

tileIndex - the sequential tile index

nullValue - the blank value used in integer type images (this is ignored for floating-point images where NaN is used always)

compressorControl - the class that performs the decompresion of tiles, and which will be used to decompress the null pixel mask also.

Method Details

restoreNulls

public void restoreNulls()

Restores the original blanking values in the decompressed image based on the null pixel mask that was stored along with the compressed data.