Package jj2000.j2k.quantization
Class QuantTypeSpec
java.lang.Object
jj2000.j2k.ModuleSpec
jj2000.j2k.quantization.QuantTypeSpec
- All Implemented Interfaces:
Cloneable
This class extends ModuleSpec class in order to hold specifications about
the quantization type to use in each tile-component. Supported quantization
type are:
- Reversible (no quantization)
- Derived (the quantization step size is derived from the one of the LL-subband)
- Expounded (the quantization step size of each subband is signalled in the codestream headers)
- See Also:
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Field Summary
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
ConstructorsConstructorDescriptionQuantTypeSpec(int nt, int nc, byte type) Constructs an empty 'QuantTypeSpec' with specified number of tile and components.QuantTypeSpec(int nt, int nc, byte type, J2KImageWriteParamJava wp, String values) Constructs a new 'QuantTypeSpec' for the specified number of components and tiles and the arguments of "-Qtype" option. -
Method Summary
Modifier and TypeMethodDescriptionbooleanisDerived(int t, int c) Returns true if given tile-component uses derived quantization step size.booleanCheck the irreversibility of the whole image.booleanCheck the reversibility of the whole image.booleanisReversible(int t, int c) Check the reversibility of the given tile-component.Methods inherited from class jj2000.j2k.ModuleSpec
clone, getCompDef, getCopy, getDefault, getSpec, getSpecValType, getTileCompVal, getTileDef, isCompSpecified, isTileCompSpecified, isTileSpecified, parseIdx, rotate90, setCompDef, setDefault, setTileCompVal, setTileDef
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Constructor Details
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QuantTypeSpec
public QuantTypeSpec(int nt, int nc, byte type) Constructs an empty 'QuantTypeSpec' with specified number of tile and components. This constructor is called by the decoder.- Parameters:
nt- Number of tilesnc- Number of componentstype- the type of the specification module i.e. tile specific, component specific or both.
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QuantTypeSpec
Constructs a new 'QuantTypeSpec' for the specified number of components and tiles and the arguments of "-Qtype" option. This constructor is called by the encoder.- Parameters:
nt- The number of tilesnc- The number of componentstype- the type of the specification module i.e. tile specific, component specific or both.
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Method Details
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isDerived
public boolean isDerived(int t, int c) Returns true if given tile-component uses derived quantization step size.- Parameters:
t- Tile indexc- Component index- Returns:
- True if derived quantization step size
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isReversible
public boolean isReversible(int t, int c) Check the reversibility of the given tile-component.- Parameters:
t- The index of the tilec- The index of the component- Returns:
- Whether or not the tile-component is reversible
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isFullyReversible
public boolean isFullyReversible()Check the reversibility of the whole image.- Returns:
- Whether or not the whole image is reversible
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isFullyNonReversible
public boolean isFullyNonReversible()Check the irreversibility of the whole image.- Returns:
- Whether or not the whole image is reversible
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