org.dcm4che2.iod.module.lut
Class WindowLevelLut

java.lang.Object
  org.dcm4che2.iod.module.lut.WindowLevelLut

All Implemented Interfaces:

ILut

public class WindowLevelLut
extends java.lang.Object
implements ILut

Implements a window level LUT. See C.11.2.1.2 for information on the bias values and lookup conditions. In general, there is a bias of -0.5 so that an integer value can be used to specify the "center" of a range of odd length (that is, of an even number of consecutive integers, such as 256 - the width is 255, while the center of 0..255 127.5 - this bias makes this "center" 128 to allow it to be specified as an integer.

Constructor Summary

WindowLevelLut(float center, float width, java.lang.String description)
Create a window level mapping, on the standard 0->255 output bytes

WindowLevelLut(float center, float width, java.lang.String description, int ymin, int ymax)
Create a window level mapping

Method Summary

float	getCenter()
java.lang.String	getDescription()
float	getWidth()
int	getYmax()
int	getYmin()
float	lookup(float value) Perform a window level lookup
int	lookup(int value) Perform a window level lookup
void	setCenter(float center)
void	setDescription(java.lang.String description)
void	setWidth(float width)
void	setYmax(int ymax)
void	setYmin(int ymin)

Methods inherited from class java.lang.Object

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

Constructor Detail

WindowLevelLut

public WindowLevelLut(float center,
                      float width,
                      java.lang.String description)

Create a window level mapping, on the standard 0->255 output bytes

WindowLevelLut

public WindowLevelLut(float center,
                      float width,
                      java.lang.String description,
                      int ymin,
                      int ymax)

Create a window level mapping

Method Detail

lookup

public float lookup(float value)

Perform a window level lookup

Specified by:

lookup in interface ILut

Returns:

looked up value.

getCenter

public float getCenter()

setCenter

public void setCenter(float center)

getDescription

public java.lang.String getDescription()

setDescription

public void setDescription(java.lang.String description)

getWidth

public float getWidth()

setWidth

public void setWidth(float width)

getYmax

public int getYmax()

setYmax

public void setYmax(int ymax)

getYmin

public int getYmin()

setYmin

public void setYmin(int ymin)

lookup

public int lookup(int value)

Perform a window level lookup

Specified by:

lookup in interface ILut

Parameters:

value - to convert to float, use the float lookup

Returns:

the int cast response from the float lookup.