ucar.jpeg.icc.lut

Class MatrixBasedTransformTosRGB

java.lang.Object

ucar.jpeg.icc.lut.MatrixBasedTransformTosRGB

public class MatrixBasedTransformTosRGB
extends Object

Transform for applying ICCProfiling to an input DataBlk

Version:

1.0

Author:

Bruce A. Kern

See Also:

jj2000.j2k.image.DataBlkInt, jj2000.j2k.image.DataBlkFloat

Constructor Summary

Constructors

Constructor and Description
MatrixBasedTransformTosRGB(RestrictedICCProfile ricc, int[] dwMaxValue, int[] dwShiftValue) Construct a 3 component transform based on an input RestricedICCProfile This transform will pass the input throught a floating point lut (LookUpTableFP), apply a matrix to the output and finally pass the intermediate buffer through a 8-bit lut (LookUpTable8).

Method Summary

Methods

Modifier and Type	Method and Description
void	apply(DataBlkFloat[] inb, DataBlkFloat[] outb) Performs the transform.
void	apply(DataBlkInt[] inb, DataBlkInt[] outb) Performs the transform.
String	toString() String representation of class

Methods inherited from class java.lang.Object

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

Constructor Detail

MatrixBasedTransformTosRGB

public MatrixBasedTransformTosRGB(RestrictedICCProfile ricc,
                          int[] dwMaxValue,
                          int[] dwShiftValue)

Construct a 3 component transform based on an input RestricedICCProfile This transform will pass the input throught a floating point lut (LookUpTableFP), apply a matrix to the output and finally pass the intermediate buffer through a 8-bit lut (LookUpTable8). This operation will be designated (LFP*M*L8) * Data The operators (LFP*M*L8) are constructed here. Although the data for only one component is returned, the transformation must be done for all components, because the matrix application involves a linear combination of component input to produce the output.

Parameters:

ricc - input profile

dwMaxValue - clipping value for output.

dwMaxCols - number of columns to transform

dwMaxRows - number of rows to transform

Method Detail

toString

public String toString()

String representation of class

Overrides:

toString in class Object

Returns:

suitable representation for class

apply

public void apply(DataBlkInt[] inb,
         DataBlkInt[] outb)
           throws MatrixBasedTransformException

Performs the transform. Pass the input throught the LookUpTableFP, apply the matrix to the output and finally pass the intermediate buffer through the LookUpTable8. This operation is designated (LFP*M*L8) * Data are already constructed. Although the data for only one component is returned, the transformation must be done for all components, because the matrix application involves a linear combination of component input to produce the output.

Parameters:

ncols - number of columns in the input

nrows - number of rows in the input

inb - input data block

outb - output data block

Throws:

MatrixBasedTransformException

apply

public void apply(DataBlkFloat[] inb,
         DataBlkFloat[] outb)
           throws MatrixBasedTransformException

Performs the transform. Pass the input throught the LookUpTableFP, apply the matrix to the output and finally pass the intermediate buffer through the LookUpTable8. This operation is designated (LFP*M*L8) * Data are already constructed. Although the data for only one component is returned, the transformation must be done for all components, because the matrix application involves a linear combination of component input to produce the output.

Parameters:

ncols - number of columns in the input

nrows - number of rows in the input

inb - input data block

outb - output data block

Throws:

MatrixBasedTransformException