Package com.luciad.imaging

Class ALcdBandColorSemantics

java.lang.Object

com.luciad.imaging.ALcdBandSemantics

com.luciad.imaging.ALcdBandColorSemantics

public abstract class ALcdBandColorSemantics
extends ALcdBandSemantics

Semantics for a color band in an image.

The type describes the semantics of the band. In addition for color bands you can also retrieve the color space and component index.

This class cannot be implemented by the user. You can use the TLcdBandColorSemanticsBuilder to create new instances.

An image's pixels are considered to represent a color if:

• All bands are of type ALcdBandColorSemantics.
• The band types are one of the following:
  • Gray
  • Red, Green, Blue
  • Red, Green, Blue, Alpha
• All bands with a color space have the same one.

Note that the order of the bands is important. For example [Blue, Green, Red] is not considered a color. This does not restrict the actual in-memory order. For example ComponentSampleModel allows a different memory byte-order and logical order through its band offsets.

Since:

2014.0

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	ALcdBandColorSemantics.Type	The type of a band.

Nested classes/interfaces inherited from class com.luciad.imaging.ALcdBandSemantics

ALcdBandSemantics.DataType

Method Summary

Modifier and Type	Method	Description
abstract ColorSpace	getColorSpace()	Returns the color space.
abstract int	getComponentIndex()	Returns the component index in the color space.
abstract IndexColorModel	getPalette()	Returns the palette for a palette index band.
abstract ALcdBandColorSemantics.Type	getType()	Returns the type of the band.
abstract boolean	isAlphaPremultiplied()	Returns if the band is pre-multiplied with alpha.

Methods inherited from class com.luciad.imaging.ALcdBandSemantics

getDataType, getMaxValue, getMinValue, getNoDataValue, getNormalizedRangeMaxValue, getNormalizedRangeMinValue, getNumSignificantBits, isNormalized

Methods inherited from class java.lang.Object

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

Method Details

getType

public abstract ALcdBandColorSemantics.Type getType()

Returns the type of the band.

Returns:

the type, never null

getColorSpace

public abstract ColorSpace getColorSpace()

Returns the color space.

This property is only available for color bands (e.g. all types except ALcdBandColorSemantics.Type.ALPHA).

Returns:

the color space

getComponentIndex

public abstract int getComponentIndex()

Returns the component index in the color space.

For a alpha or palette index band the component index is -1.

Returns:

the component index or -1

isAlphaPremultiplied

public abstract boolean isAlphaPremultiplied()

Returns if the band is pre-multiplied with alpha.

An alpha band is never pre-multiplied.

Returns:

whether the band is pre-multiplied with alpha or not

getPalette

public abstract IndexColorModel getPalette()

Returns the palette for a palette index band.

Returns:

the palette or null.