jj2000.j2k.wavelet.analysis

Class AnWTFilterSpec

java.lang.Object

jj2000.j2k.ModuleSpec

jj2000.j2k.wavelet.analysis.AnWTFilterSpec

All Implemented Interfaces:

Cloneable

public class AnWTFilterSpec
extends ModuleSpec

This class extends ModuleSpec class for analysis filters specification holding purpose.

See Also:

ModuleSpec

Field Summary

Fields

Modifier and Type	Field and Description
private static String	NON_REV_FILTER_STR The non-reversible default filter
private static String	REV_FILTER_STR The reversible default filter

Fields inherited from class jj2000.j2k.ModuleSpec

compDef, def, nComp, nTiles, SPEC_COMP_DEF, SPEC_DEF, SPEC_TILE_COMP, SPEC_TILE_DEF, SPEC_TYPE_COMP, SPEC_TYPE_TILE, SPEC_TYPE_TILE_COMP, specified, specType, specValType, tileCompVal, tileDef

Constructor Summary

Constructors

Constructor and Description
AnWTFilterSpec(int nt, int nc, byte type, QuantTypeSpec qts, J2KImageWriteParamJava wp, String values) Constructs a new 'AnWTFilterSpec' for the specified number of components and tiles.

Method Summary

Methods

Modifier and Type	Method and Description
AnWTFilter[]	getHFilters(int t, int c) Returns the horizontal analysis filters to be used in component 'n' and tile 't'.
AnWTFilter[]	getVFilters(int t, int c) Returns the vertical analysis filters to be used in component 'n' and tile 't'.
int	getWTDataType(int t, int c) Returns the data type used by the filters in this object, as defined in the 'DataBlk' interface for specified tile-component.
boolean	isReversible(int t, int c) Check the reversibility of filters contained is the given tile-component.
private AnWTFilter[][]	parseFilters(String word) Parse filters from the given word
String	toString() Debugging method

Methods inherited from class jj2000.j2k.ModuleSpec

clone, getCompDef, getCopy, getDefault, getSpec, getSpecValType, getTileCompVal, getTileDef, isCompSpecified, isTileCompSpecified, isTileSpecified, parseIdx, rotate90, setCompDef, setDefault, setTileCompVal, setTileDef

Methods inherited from class java.lang.Object

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

Field Detail

REV_FILTER_STR

private static final String REV_FILTER_STR

The reversible default filter

See Also:

Constant Field Values

NON_REV_FILTER_STR

private static final String NON_REV_FILTER_STR

The non-reversible default filter

See Also:

Constant Field Values

Constructor Detail

AnWTFilterSpec

public AnWTFilterSpec(int nt,
              int nc,
              byte type,
              QuantTypeSpec qts,
              J2KImageWriteParamJava wp,
              String values)

Constructs a new 'AnWTFilterSpec' for the specified number of components and tiles.

Parameters:

nt - The number of tiles

nc - The number of components

type - the type of the specification module i.e. tile specific, component specific or both.

qts - Quantization specifications

Method Detail

parseFilters

private AnWTFilter[][] parseFilters(String word)

Parse filters from the given word

Parameters:

word - String to parse

Returns:

Analysis wavelet filter (first dimension: by direction, second dimension: by decomposition levels)

getWTDataType

public int getWTDataType(int t,
                int c)

Returns the data type used by the filters in this object, as defined in the 'DataBlk' interface for specified tile-component.

Parameters:

t - Tile index

c - Component index

Returns:

The data type of the filters in this object

See Also:

DataBlk

getHFilters

public AnWTFilter[] getHFilters(int t,
                       int c)

Returns the horizontal analysis filters to be used in component 'n' and tile 't'.

The horizontal analysis filters are returned in an array of AnWTFilter. Each element contains the horizontal filter for each resolution level starting with resolution level 1 (i.e. the analysis filter to go from resolution level 1 to resolution level 0). If there are less elements than the maximum resolution level, then the last element is assumed to be repeated.

Parameters:

t - The tile index, in raster scan order

c - The component index.

Returns:

The array of horizontal analysis filters for component 'n' and tile 't'.

getVFilters

public AnWTFilter[] getVFilters(int t,
                       int c)

Returns the vertical analysis filters to be used in component 'n' and tile 't'.

The vertical analysis filters are returned in an array of AnWTFilter. Each element contains the vertical filter for each resolution level starting with resolution level 1 (i.e. the analysis filter to go from resolution level 1 to resolution level 0). If there are less elements than the maximum resolution level, then the last element is assumed to be repeated.

Parameters:

t - The tile index, in raster scan order

c - The component index.

Returns:

The array of horizontal analysis filters for component 'n' and tile 't'.

toString

public String toString()

Debugging method

Overrides:

toString in class Object

isReversible

public boolean isReversible(int t,
                   int c)

Check the reversibility of filters contained is the given tile-component.

Parameters:

t - The index of the tile

c - The index of the component