ITK  4.1.0
Insight Segmentation and Registration Toolkit
Public Types | Public Member Functions | Static Public Member Functions | Protected Member Functions | Protected Attributes | Private Member Functions
itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage > Class Template Reference

#include <itkMultiResolutionPyramidImageFilter.h>

+ Inheritance diagram for itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >:
+ Collaboration diagram for itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >:

List of all members.

Public Types

typedef SmartPointer< const SelfConstPointer
typedef
Superclass::InputImageConstPointer 
InputImageConstPointer
typedef
Superclass::InputImagePointer 
InputImagePointer
typedef Superclass::InputImageType InputImageType
typedef
Superclass::OutputImagePointer 
OutputImagePointer
typedef Superclass::OutputImageType OutputImageType
typedef SmartPointer< SelfPointer
typedef Array2D< unsigned int > ScheduleType
typedef
MultiResolutionPyramidImageFilter 
Self
typedef ImageToImageFilter
< TInputImage, TOutputImage > 
Superclass

Public Member Functions

virtual ::itk::LightObject::Pointer CreateAnother (void) const
virtual void GenerateInputRequestedRegion ()
virtual void GenerateOutputInformation ()
virtual const double & GetMaximumError ()
virtual const char * GetNameOfClass () const
virtual unsigned int GetNumberOfLevels () const
virtual const ScheduleTypeGetSchedule ()
const unsigned int * GetStartingShrinkFactors () const
virtual bool GetUseShrinkImageFilter () const
virtual void SetMaximumError (double _arg)
virtual void SetNumberOfLevels (unsigned int num)
virtual void SetSchedule (const ScheduleType &schedule)
virtual void SetStartingShrinkFactors (unsigned int factor)
virtual void SetStartingShrinkFactors (unsigned int *factors)
virtual void SetUseShrinkImageFilter (bool _arg)
 typedef (Concept::SameDimension< ImageDimension, OutputImageDimension >) SameDimensionCheck
 typedef (Concept::HasNumericTraits< typename TOutputImage::PixelType >) OutputHasNumericTraitsCheck
virtual void UseShrinkImageFilterOff ()
virtual void UseShrinkImageFilterOn ()
virtual void GenerateOutputRequestedRegion (DataObject *output)

Static Public Member Functions

static bool IsScheduleDownwardDivisible (const ScheduleType &schedule)
static Pointer New ()

Static Public Attributes

static const unsigned int ImageDimension = TInputImage::ImageDimension
static const unsigned int OutputImageDimension = TOutputImage::ImageDimension

Protected Member Functions

void GenerateData ()
 MultiResolutionPyramidImageFilter ()
 ~MultiResolutionPyramidImageFilter ()
void PrintSelf (std::ostream &os, Indent indent) const

Protected Attributes

double m_MaximumError
unsigned int m_NumberOfLevels
ScheduleType m_Schedule
bool m_UseShrinkImageFilter

Private Member Functions

 MultiResolutionPyramidImageFilter (const Self &)
void operator= (const Self &)

Detailed Description

template<class TInputImage, class TOutputImage>
class itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >

Framework for creating images in a multi-resolution pyramid.

MultiResolutionPyramidImageFilter provides a generic framework to to create a image pryamid according to a user defined multi-resolution schedule.

The multi-resolution schedule is specified in terms for shrink factors at each multi-resolution level for each dimension.

A user can either use the default schedules or specify each factor in the schedules directly.

The schedule is stored as an unsigned int matrix. An element of the table can be access via the double bracket notation: table[resLevel][dimension]

For example: 8 4 4 4 4 2

is a schedule for two computation level. In the first (coarest) level the image is reduce by a factor of 8 in the column dimension, factor of 4 in the row dimension and factor of 4 in the slice dimension. In the second level, the image is reduce by a factor of 4 in the column dimension, 4 is the row dimension and 2 in the slice dimension.

The method SetNumberOfLevels() set the number of computation levels in the pyramid. This method will allocate memory for the multi-resolution schedule table. This method generates defaults tables with the starting shrink factor for all dimension set to 2^(NumberOfLevel - 1). All factors are halved for all subsequent levels. For example if the number of levels was set to 4, the default table is:

8 8 8 4 4 4 2 2 2 1 1 1

The user can get a copy of the schedule via GetSchedule() They may make alteration and reset it using SetSchedule().

A user can create a default table by specifying the starting shrink factors via methods SetStartingShrinkFactors() The factors for subsequent level is generated by halving the factor or setting to one, depending on which is larger.

For example, for 4 levels and starting factors of 8,8,4 the default table would be:

8 8 4 4 4 2 2 2 1 1 1 1

When this filter is updated, NumberOfLevels outputs are produced. The N'th output correspond to the N'th level of the pyramid.

To generate each output image, Gaussian smoothing is first performed using a DiscreteGaussianImageFilter with variance (shrink factor / 2)^2. The smoothed image is then downsampled using a ResampleImageFilter.

Note that even if the shrink factors are all equal to one, a smoothing will still be applied. The output at the finest level of the pyramid will thus typically be a smoothed version of the input.

This class is templated over the input image type and the output image type.

This filter uses multithreaded filters to perform the smoothing and downsampling.

This filter supports streaming.

See also:
DiscreteGaussianImageFilter
ShrinkImageFilter

Definition at line 112 of file itkMultiResolutionPyramidImageFilter.h.


Member Typedef Documentation

template<class TInputImage , class TOutputImage >
typedef SmartPointer< const Self > itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::ConstPointer
template<class TInputImage , class TOutputImage >
typedef Superclass::InputImageConstPointer itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::InputImageConstPointer
template<class TInputImage , class TOutputImage >
typedef Superclass::InputImagePointer itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::InputImagePointer
template<class TInputImage , class TOutputImage >
typedef Superclass::InputImageType itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::InputImageType
template<class TInputImage , class TOutputImage >
typedef Superclass::OutputImagePointer itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::OutputImagePointer
template<class TInputImage , class TOutputImage >
typedef Superclass::OutputImageType itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::OutputImageType
template<class TInputImage , class TOutputImage >
typedef SmartPointer< Self > itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::Pointer
template<class TInputImage , class TOutputImage >
typedef Array2D< unsigned int > itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::ScheduleType

ScheduleType typedef support.

Definition at line 126 of file itkMultiResolutionPyramidImageFilter.h.

template<class TInputImage , class TOutputImage >
typedef MultiResolutionPyramidImageFilter itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::Self
template<class TInputImage , class TOutputImage >
typedef ImageToImageFilter< TInputImage, TOutputImage > itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::Superclass

Constructor & Destructor Documentation

template<class TInputImage , class TOutputImage >
itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::MultiResolutionPyramidImageFilter ( ) [protected]

End concept checking

template<class TInputImage , class TOutputImage >
itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::~MultiResolutionPyramidImageFilter ( ) [inline, protected]

End concept checking

Definition at line 224 of file itkMultiResolutionPyramidImageFilter.h.

template<class TInputImage , class TOutputImage >
itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::MultiResolutionPyramidImageFilter ( const Self ) [private]

Member Function Documentation

template<class TInputImage , class TOutputImage >
virtual::itk::LightObject::Pointer itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::CreateAnother ( void  ) const [virtual]

Create an object from an instance, potentially deferring to a factory. This method allows you to create an instance of an object that is exactly the same type as the referring object. This is useful in cases where an object has been cast back to a base class.

Reimplemented from itk::Object.

Reimplemented in itk::RecursiveMultiResolutionPyramidImageFilter< TInputImage, TOutputImage >.

template<class TInputImage , class TOutputImage >
void itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::GenerateData ( ) [protected, virtual]
template<class TInputImage , class TOutputImage >
virtual void itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::GenerateInputRequestedRegion ( ) [virtual]

MultiResolutionPyramidImageFilter requires a larger input requested region than the output requested regions to accomdate the shrinkage and smoothing operations. As such, MultiResolutionPyramidImageFilter needs to provide an implementation for GenerateInputRequestedRegion(). The original documentation of this method is below.

See also:
ProcessObject::GenerateInputRequestedRegion()

Reimplemented from itk::ImageToImageFilter< TInputImage, TOutputImage >.

Reimplemented in itk::RecursiveMultiResolutionPyramidImageFilter< TInputImage, TOutputImage >.

template<class TInputImage , class TOutputImage >
virtual void itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::GenerateOutputInformation ( ) [virtual]

MultiResolutionPyramidImageFilter produces images which are of different resolution and different pixel spacing than its input image. As such, MultiResolutionPyramidImageFilter needs to provide an implementation for GenerateOutputInformation() in order to inform the pipeline execution model. The original documentation of this method is below.

See also:
ProcessObject::GenerateOutputInformaton()

Reimplemented from itk::ProcessObject.

template<class TInputImage , class TOutputImage >
virtual void itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::GenerateOutputRequestedRegion ( DataObject output) [virtual]

Given one output whose requested region has been set, this method sets the requested region for the remaining output images. The original documentation of this method is below.

See also:
ProcessObject::GenerateOutputRequestedRegion();

Reimplemented from itk::ProcessObject.

Reimplemented in itk::RecursiveMultiResolutionPyramidImageFilter< TInputImage, TOutputImage >.

template<class TInputImage , class TOutputImage >
virtual const double& itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::GetMaximumError ( ) [virtual]
template<class TInputImage , class TOutputImage >
virtual const char* itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::GetNameOfClass ( ) const [virtual]

Run-time type information (and related methods).

Reimplemented from itk::ImageToImageFilter< TInputImage, TOutputImage >.

Reimplemented in itk::RecursiveMultiResolutionPyramidImageFilter< TInputImage, TOutputImage >.

template<class TInputImage , class TOutputImage >
virtual unsigned int itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::GetNumberOfLevels ( ) const [virtual]

Get the number of multi-resolution levels.

template<class TInputImage , class TOutputImage >
virtual const ScheduleType& itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::GetSchedule ( ) [virtual]

Get the multi-resolution schedule.

template<class TInputImage , class TOutputImage >
const unsigned int* itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::GetStartingShrinkFactors ( ) const

Get the starting shrink factors

template<class TInputImage , class TOutputImage >
virtual bool itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::GetUseShrinkImageFilter ( ) const [virtual]
template<class TInputImage , class TOutputImage >
static bool itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::IsScheduleDownwardDivisible ( const ScheduleType schedule) [static]

Test if the schedule is downward divisible. This method returns true if at every level, the shrink factors are divisble by the shrink factors at the next level.

template<class TInputImage , class TOutputImage >
static Pointer itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::New ( ) [static]

Method for creation through the object factory.

Reimplemented from itk::Object.

Reimplemented in itk::RecursiveMultiResolutionPyramidImageFilter< TInputImage, TOutputImage >.

template<class TInputImage , class TOutputImage >
void itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::operator= ( const Self ) [private]

PushBackInput(), PushFronInput() in the public section force the input to be the type expected by an ImageToImageFilter. However, these methods end of "hiding" the versions from the superclass (ProcessObject) whose arguments are DataObjects. Here, we re-expose the versions from ProcessObject to avoid warnings about hiding methods from the superclass.

Reimplemented from itk::ImageToImageFilter< TInputImage, TOutputImage >.

Reimplemented in itk::RecursiveMultiResolutionPyramidImageFilter< TInputImage, TOutputImage >.

template<class TInputImage , class TOutputImage >
void itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::PrintSelf ( std::ostream &  os,
Indent  indent 
) const [protected, virtual]
template<class TInputImage , class TOutputImage >
virtual void itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::SetMaximumError ( double  _arg) [virtual]
template<class TInputImage , class TOutputImage >
virtual void itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::SetNumberOfLevels ( unsigned int  num) [virtual]

Set the number of multi-resolution levels. The matrix containing the schedule will be resized accordingly. The schedule is populated with default values. At the coarset (0) level, the shrink factors are set 2^(nlevel - 1) for all dimension. These shrink factors are halved for subsequent levels. The number of levels is clamped to a minimum value of 1. All shrink factors are also clamped to a minimum value of 1.

template<class TInputImage , class TOutputImage >
virtual void itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::SetSchedule ( const ScheduleType schedule) [virtual]

Set a multi-resolution schedule. The input schedule must have only ImageDimension number of columns and NumberOfLevels number of rows. For each dimension, the shrink factor must be non-increasing with respect to subsequent levels. This function will clamp shrink factors to satisify this condition. All shrink factors less than one will also be clamped to the value of 1.

template<class TInputImage , class TOutputImage >
virtual void itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::SetStartingShrinkFactors ( unsigned int  factor) [virtual]

Set the starting shrink factor for the coarset (0) resolution level. The schedule is then populated with defaults values obtained by halving the factors at the previous level. All shrink factors are clamped to a minimum value of 1.

template<class TInputImage , class TOutputImage >
virtual void itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::SetStartingShrinkFactors ( unsigned int *  factors) [virtual]
template<class TInputImage , class TOutputImage >
virtual void itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::SetUseShrinkImageFilter ( bool  _arg) [virtual]
template<class TInputImage , class TOutputImage >
itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::typedef ( Concept::SameDimension< ImageDimension, OutputImageDimension )

Begin concept checking This class requires SameDimensionCheck in the form of ( Concept::SameDimension< ImageDimension, OutputImageDimension > )

template<class TInputImage , class TOutputImage >
itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::typedef ( Concept::HasNumericTraits< typename TOutputImage::PixelType >  )

This class requires OutputHasNumericTraitsCheck in the form of ( Concept::HasNumericTraits< typename TOutputImage::PixelType > )

template<class TInputImage , class TOutputImage >
virtual void itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::UseShrinkImageFilterOff ( ) [virtual]
template<class TInputImage , class TOutputImage >
virtual void itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::UseShrinkImageFilterOn ( ) [virtual]

Member Data Documentation

template<class TInputImage , class TOutputImage >
const unsigned int itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::ImageDimension = TInputImage::ImageDimension [static]

ImageDimension enumeration.

Reimplemented in itk::RecursiveMultiResolutionPyramidImageFilter< TInputImage, TOutputImage >.

Definition at line 133 of file itkMultiResolutionPyramidImageFilter.h.

template<class TInputImage , class TOutputImage >
double itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::m_MaximumError [protected]

Definition at line 231 of file itkMultiResolutionPyramidImageFilter.h.

template<class TInputImage , class TOutputImage >
unsigned int itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::m_NumberOfLevels [protected]

Definition at line 233 of file itkMultiResolutionPyramidImageFilter.h.

template<class TInputImage , class TOutputImage >
ScheduleType itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::m_Schedule [protected]

Definition at line 234 of file itkMultiResolutionPyramidImageFilter.h.

template<class TInputImage , class TOutputImage >
bool itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::m_UseShrinkImageFilter [protected]

Definition at line 236 of file itkMultiResolutionPyramidImageFilter.h.

template<class TInputImage , class TOutputImage >
const unsigned int itk::MultiResolutionPyramidImageFilter< TInputImage, TOutputImage >::OutputImageDimension = TOutputImage::ImageDimension [static]

ImageDimension enumeration.

Reimplemented from itk::ImageToImageFilter< TInputImage, TOutputImage >.

Definition at line 135 of file itkMultiResolutionPyramidImageFilter.h.


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