#include <mitkLabeledImageLookupTable.h>

Inheritance diagram for mitk::LabeledImageLookupTable:

Collaboration diagram for mitk::LabeledImageLookupTable:

Public Types
typedef LabeledImageLookupTable	Self
typedef LookupTable	Superclass
typedef itk::SmartPointer< Self >	Pointer
typedef itk::SmartPointer < const Self >	ConstPointer
typedef unsigned char	LabelType
Public Member Functions
virtual const char *	GetClassName () const
virtual void	SetColorForLabel (const LabelType &label, const vtkFloatingPointType &r, const vtkFloatingPointType &g, const vtkFloatingPointType &b, const vtkFloatingPointType a=1.0)
virtual vtkFloatingPointType *	GetColorForLabel (const LabelType &label)
mitk::LevelWindow	GetLevelWindow ()
Static Public Member Functions
static Pointer	New ()
Protected Member Functions
	LabeledImageLookupTable ()
virtual	~LabeledImageLookupTable ()
virtual void	GenerateRandomColor (vtkFloatingPointType &r, vtkFloatingPointType &g, vtkFloatingPointType &b)
virtual vtkFloatingPointType	GenerateRandomNumber ()
Protected Attributes
mitk::LevelWindow	m_LevelWindow

Detailed Description

A lookup table for 2D mapping of labeled images. The lookup table supports images with up to 256 unsigned labels. Negative labels are not supported. Please use the level/window settings as given by the GetLevelWindow() method to make sure, that the colors are rendered correctly. The colors are initialized with random colors as default. As background the label 0 is assumed. The color for the background is set to fully transparent as default.

Definition at line 39 of file mitkLabeledImageLookupTable.h.

Member Typedef Documentation

typedef itk::SmartPointer<const Self> mitk::LabeledImageLookupTable::ConstPointer

Reimplemented from mitk::LookupTable.

Definition at line 45 of file mitkLabeledImageLookupTable.h.

typedef unsigned char mitk::LabeledImageLookupTable::LabelType

The data type for a label. Currently only images with labels in the range [0,255] are supported.

Definition at line 50 of file mitkLabeledImageLookupTable.h.

typedef itk::SmartPointer<Self> mitk::LabeledImageLookupTable::Pointer

Reimplemented from mitk::LookupTable.

Definition at line 45 of file mitkLabeledImageLookupTable.h.

typedef LabeledImageLookupTable mitk::LabeledImageLookupTable::Self

Standard mitk typedefs are generated by the mitkClassMacro

Reimplemented from mitk::LookupTable.

Definition at line 45 of file mitkLabeledImageLookupTable.h.

typedef LookupTable mitk::LabeledImageLookupTable::Superclass

Reimplemented from mitk::LookupTable.

Definition at line 45 of file mitkLabeledImageLookupTable.h.

Constructor & Destructor Documentation

mitk::LabeledImageLookupTable::LabeledImageLookupTable ( ) [protected]

Default constructor. Protected to prevent "normal" creation

Definition at line 27 of file mitkLabeledImageLookupTable.cpp.

References GenerateRandomColor(), m_LevelWindow, mitk::LookupTable::m_LookupTable, New(), mitk::LevelWindow::SetFixed(), mitk::LevelWindow::SetRangeMinMax(), and mitk::LevelWindow::SetWindowBounds().

  : m_LevelWindow(128,256)
{
  if ( m_LookupTable == NULL )
  {
    itkWarningMacro("LookupTable is NULL, it should have been initialized by the default constructor of mitk::LookupTable");
    m_LookupTable = vtkLookupTable::New();
  }
  m_LookupTable->SetNumberOfTableValues(256);
  
  // set the background to black and fully transparent
  m_LookupTable->SetTableValue( 0, 0.0, 0.0, 0.0, 0.0 ); 
  
  // initialize the remaining 255 colors with random values and 
  // an alpha value of 1.0
  vtkFloatingPointType r, g, b;
  
  //
  // Initialize the random number generator with an arbitrary seed.
  // This way, the generated colors are random, but always the same...
  std::srand( 2 );
  for ( vtkIdType index = 1 ; index < 256 ; ++index )
  {
    GenerateRandomColor(r, g, b);
    m_LookupTable->SetTableValue(index, r, g, b);
  }
  
  // initialize the default level/window settings,
  // which can be accessed via GetLevelWindow();
  m_LevelWindow.SetRangeMinMax(0,255);
  m_LevelWindow.SetWindowBounds(0,255);
  m_LevelWindow.SetFixed(true);
  
}

mitk::LabeledImageLookupTable::~LabeledImageLookupTable ( ) [protected, virtual]

Virtual destructor

Definition at line 65 of file mitkLabeledImageLookupTable.cpp.

{
  
}

Member Function Documentation

void mitk::LabeledImageLookupTable::GenerateRandomColor	(	vtkFloatingPointType &	r,
		vtkFloatingPointType &	g,
		vtkFloatingPointType &	b
	)		`[protected, virtual]`

Generates a random rgb color value. Values for rgb are in the range [0,1]

Definition at line 112 of file mitkLabeledImageLookupTable.cpp.

References GenerateRandomNumber().

Referenced by LabeledImageLookupTable().

{
  r = GenerateRandomNumber();
  g = GenerateRandomNumber();
  b = GenerateRandomNumber();
}

vtkFloatingPointType mitk::LabeledImageLookupTable::GenerateRandomNumber ( ) [protected, virtual]

Generates a radnom number drawn from a uniform distribution in the range [0,1].

Definition at line 124 of file mitkLabeledImageLookupTable.cpp.

{
  return ( ( ( vtkFloatingPointType ) ( std::rand( ) ) ) / ( ( vtkFloatingPointType ) ( RAND_MAX ) ) );
}

virtual const char* mitk::LabeledImageLookupTable::GetClassName ( ) const [virtual]

Reimplemented from mitk::LookupTable.

vtkFloatingPointType * mitk::LabeledImageLookupTable::GetColorForLabel ( const LabelType & label ) [virtual]

Determines the color which will be used for coloring a given label.

Parameters:

label the label for which the color should be returned

Returns:: an rgba array containing the color information for the given label. Color components are expressed as [0,1] double values.

Determines the color which will be used for coloring a given label.

Parameters:

label the label for which the color should be returned

Returns:: an rgba array containing the color information for the given label Color components are expressed as [0,1] double values.

Definition at line 97 of file mitkLabeledImageLookupTable.cpp.

{
  if ( m_LookupTable == NULL )
  {
    itkWarningMacro("LookupTable is NULL, but it should have been initialized by the constructor");
    return NULL;
  }
  return m_LookupTable->GetTableValue( label );
}

mitk::LevelWindow mitk::LabeledImageLookupTable::GetLevelWindow ( ) [inline]

Provides access to level window settings, which should be used in combination with the LUTs generated by this filter (at lease for 2D visualization. If you use other level/window settings, it is not guaranteed, that scalar values are mapped to the correct colors.

Definition at line 82 of file mitkLabeledImageLookupTable.h.

{return m_LevelWindow;}

static Pointer mitk::LabeledImageLookupTable::New ( ) [static]

Make this object constructable by the New() Method.

Reimplemented from mitk::LookupTable.

Referenced by LabeledImageLookupTable().

void mitk::LabeledImageLookupTable::SetColorForLabel	(	const LabelType &	label,
		const vtkFloatingPointType &	r,
		const vtkFloatingPointType &	g,
		const vtkFloatingPointType &	b,
		const vtkFloatingPointType	a = `1.0`
	)		`[virtual]`

Sets the color for a given label

Parameters:

label	The pixel value used as a label in the image
r	The red component of the rgba color value. Values sould be given in the range [0,1]
g	The green component of the rgba color value. Values sould be given in the range [0,1]
b	The blue component of the rgba color value. Values sould be given in the range [0,1]
a	The alpha component of the rgba color value. Values sould be given in the range [0,1]. Default is 1.

Definition at line 79 of file mitkLabeledImageLookupTable.cpp.

{
  if ( m_LookupTable == NULL )
  {
    itkWarningMacro("LookupTable is NULL, but it should have been initialized by the constructor");
    return;
  }  
  m_LookupTable->SetTableValue(label, r, g, b, a);
}

Member Data Documentation

mitk::LevelWindow mitk::LabeledImageLookupTable::m_LevelWindow [protected]

Definition at line 107 of file mitkLabeledImageLookupTable.h.

Referenced by LabeledImageLookupTable().

The documentation for this class was generated from the following files:

mitk::LabeledImageLookupTable Class Reference

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation