com.pixelmed.dicom

Class RealWorldValueTransform

java.lang.Object

com.pixelmed.dicom.RealWorldValueTransform

public class RealWorldValueTransform
extends java.lang.Object

A transformation constructed from a DICOM attribute list that extracts those attributes which describe how stored pixel values are translated into real world values (e.g., Hounsfield Units, cm/s).

Looks first for a per-frame functional group RealWorldValueMappingSequence then looks in the shared functional groups, then the top level of the dataset, as well as trying to find the Rescale Slope and Intercept values in the top level of the dataset.

Note that multiple transformations (for each frame) may be present and are supported.

Does not currently support a LUT in the Modality LUT Sequence, only linear rescale values.

Constructor Summary

Constructors

Constructor and Description
RealWorldValueTransform(AttributeList list)

Method Summary

Modifier and Type	Method and Description
java.lang.String	toString()
java.lang.String	toString(int frame, double storedValue) Given a stored pixel value, return a string containing a description of all known real world values that can be derived from it.
java.lang.String	toString(int frame, int storedValue) Given a stored pixel value, return a string containing a description of all known real world values that can be derived from it.

Methods inherited from class java.lang.Object

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

Constructor Detail

RealWorldValueTransform

public RealWorldValueTransform(AttributeList list)

Parameters:

list - the dataset of an image object to be searched for transformations

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

toString

public java.lang.String toString(int frame,
                                 double storedValue)

Given a stored pixel value, return a string containing a description of all known real world values that can be derived from it.

Parameters:

frame - numbered from zero; needed to select which transform if frame-specific

storedValue - the actual stored pixel value to look up

toString

public java.lang.String toString(int frame,
                                 int storedValue)

Given a stored pixel value, return a string containing a description of all known real world values that can be derived from it.

Parameters:

frame - numbered from zero; needed to select which transform if frame-specific

storedValue - the actual stored pixel value to look up