ITK  6.0.0
Insight Toolkit
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itk::BinShrinkImageFilter< TInputImage, TOutputImage > Class Template Reference
Group Filtering » Module ITKImageGridRegion-wise Processing Objects » | Streaming Filters

#include <itkBinShrinkImageFilter.h>

Detailed Description

template<typename TInputImage, typename TOutputImage>
class itk::BinShrinkImageFilter< TInputImage, TOutputImage >

Reduce the size of an image by an integer factor in each dimension while performing averaging of an input neighborhood.

The output image size in each dimension is given by:

outputSize[j] = max( std::floor(inputSize[j]/shrinkFactor[j]), 1 );

The algorithm implemented can be describe with the following equation for 2D:

\[ \mathsf{I}_{out}(x_o,x_1) = \frac{\sum_{i=0}^{f_0}\sum_{j=0}^{f_1}\mathsf{I}_{in}(f_0 x_o+i,f_1 x_1+j)}{f_0 f_1} \]

This filter is implemented so that the starting extent of the first pixel of the output matches that of the input.

The change in image geometry from a 5x5 image binned by a factor of 2x2.

This code was contributed in the Insight Journal paper: "BinShrink: A multi-resolution filter with cache efficient averaging" by Lowekamp B., Chen D. https://doi.org/10.54294/p39qox

Definition at line 58 of file itkBinShrinkImageFilter.h.

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

Public Types

using ConstPointer = SmartPointer< const Self >
 
using InputImageConstPointer = typename InputImageType::ConstPointer
 
using InputImagePointer = typename InputImageType::Pointer
 
using InputImageType = TInputImage
 
using InputIndexType = typename TInputImage::IndexType
 
using OutputImagePointer = typename OutputImageType::Pointer
 
using OutputImageRegionType = typename TOutputImage::RegionType
 
using OutputImageType = TOutputImage
 
using OutputIndexType = typename TOutputImage::IndexType
 
using OutputOffsetType = typename TOutputImage::OffsetType
 
using Pointer = SmartPointer< Self >
 
using Self = BinShrinkImageFilter
 
using ShrinkFactorsType = FixedArray< unsigned int, ImageDimension >
 
using Superclass = ImageToImageFilter< TInputImage, TOutputImage >
 
- Public Types inherited from itk::ImageToImageFilter< TInputImage, TOutputImage >
using ConstPointer = SmartPointer< const Self >
 
using InputImageConstPointer = typename InputImageType::ConstPointer
 
using InputImagePixelType = typename InputImageType::PixelType
 
using InputImagePointer = typename InputImageType::Pointer
 
using InputImageRegionType = typename InputImageType::RegionType
 
using InputImageType = TInputImage
 
using Pointer = SmartPointer< Self >
 
using Self = ImageToImageFilter
 
using Superclass = ImageSource< TOutputImage >
 
- Public Types inherited from itk::ImageSource< TOutputImage >
using ConstPointer = SmartPointer< const Self >
 
using DataObjectIdentifierType = Superclass::DataObjectIdentifierType
 
using DataObjectPointer = DataObject::Pointer
 
using DataObjectPointerArraySizeType = Superclass::DataObjectPointerArraySizeType
 
using OutputImagePixelType = typename OutputImageType::PixelType
 
using OutputImagePointer = typename OutputImageType::Pointer
 
using OutputImageRegionType = typename OutputImageType::RegionType
 
using OutputImageType = TOutputImage
 
using Pointer = SmartPointer< Self >
 
using Self = ImageSource
 
using Superclass = ProcessObject
 
- Public Types inherited from itk::ProcessObject
using ConstPointer = SmartPointer< const Self >
 
using DataObjectIdentifierType = DataObject::DataObjectIdentifierType
 
using DataObjectPointer = DataObject::Pointer
 
using DataObjectPointerArray = std::vector< DataObjectPointer >
 
using DataObjectPointerArraySizeType = DataObjectPointerArray::size_type
 
using MultiThreaderType = MultiThreaderBase
 
using NameArray = std::vector< DataObjectIdentifierType >
 
using Pointer = SmartPointer< Self >
 
using Self = ProcessObject
 
using Superclass = Object
 
- Public Types inherited from itk::Object
using ConstPointer = SmartPointer< const Self >
 
using Pointer = SmartPointer< Self >
 
using Self = Object
 
using Superclass = LightObject
 
- Public Types inherited from itk::LightObject
using ConstPointer = SmartPointer< const Self >
 
using Pointer = SmartPointer< Self >
 
using Self = LightObject
 

Public Member Functions

void GenerateInputRequestedRegion () override
 
void GenerateOutputInformation () override
 
const char * GetNameOfClass () const override
 
virtual const ShrinkFactorsType & GetShrinkFactors () const
 
virtual void SetShrinkFactors (ShrinkFactorsType _arg)
 
void SetShrinkFactors (unsigned int factor)
 
void SetShrinkFactor (unsigned int i, unsigned int factor)
 
- Public Member Functions inherited from itk::ImageToImageFilter< TInputImage, TOutputImage >
const InputImageType * GetInput () const
 
const InputImageType * GetInput (unsigned int idx) const
 
void PopBackInput () override
 
void PopFrontInput () override
 
virtual void PushBackInput (const InputImageType *input)
 
virtual void PushFrontInput (const InputImageType *input)
 
virtual void SetInput (const DataObjectIdentifierType &key, DataObject *input)
 
virtual void SetInput (const InputImageType *input)
 
virtual void SetInput (unsigned int, const TInputImage *image)
 
virtual void SetCoordinateTolerance (double _arg)
 
virtual double GetCoordinateTolerance () const
 
virtual void SetDirectionTolerance (double _arg)
 
virtual double GetDirectionTolerance () const
 
- Public Member Functions inherited from itk::ImageSource< TOutputImage >
OutputImageType * GetOutput (unsigned int idx)
 
OutputImageType * GetOutput ()
 
const OutputImageType * GetOutput () const
 
virtual void GraftOutput (DataObject *graft)
 
virtual void GraftOutput (const DataObjectIdentifierType &key, DataObject *graft)
 
virtual void GraftNthOutput (unsigned int idx, DataObject *graft)
 
ProcessObject::DataObjectPointer MakeOutput (ProcessObject::DataObjectPointerArraySizeType idx) override
 
ProcessObject::DataObjectPointer MakeOutput (const ProcessObject::DataObjectIdentifierType &) override
 
- Public Member Functions inherited from itk::ProcessObject
virtual void AbortGenerateDataOn ()
 
virtual void EnlargeOutputRequestedRegion (DataObject *)
 
virtual const bool & GetAbortGenerateData () const
 
DataObjectPointerArray GetIndexedInputs ()
 
DataObjectPointerArray GetIndexedOutputs ()
 
NameArray GetInputNames () const
 
DataObjectPointerArray GetInputs ()
 
MultiThreaderType * GetMultiThreader () const
 
DataObjectPointerArraySizeType GetNumberOfIndexedInputs () const
 
DataObjectPointerArraySizeType GetNumberOfIndexedOutputs () const
 
DataObjectPointerArraySizeType GetNumberOfInputs () const
 
DataObjectPointerArraySizeType GetNumberOfOutputs () const
 
virtual DataObjectPointerArraySizeType GetNumberOfValidRequiredInputs () const
 
NameArray GetOutputNames () const
 
DataObjectPointerArray GetOutputs ()
 
virtual float GetProgress () const
 
NameArray GetRequiredInputNames () const
 
bool HasInput (const DataObjectIdentifierType &key) const
 
bool HasOutput (const DataObjectIdentifierType &key) const
 
void IncrementProgress (float increment)
 
virtual void PrepareOutputs ()
 
virtual void PropagateRequestedRegion (DataObject *output)
 
virtual void ResetPipeline ()
 
virtual void SetAbortGenerateData (bool _arg)
 
void SetMultiThreader (MultiThreaderType *threader)
 
virtual void Update ()
 
virtual void UpdateLargestPossibleRegion ()
 
virtual void UpdateOutputData (DataObject *output)
 
virtual void UpdateOutputInformation ()
 
void UpdateProgress (float progress)
 
virtual void SetReleaseDataFlag (bool val)
 
virtual bool GetReleaseDataFlag () const
 
void ReleaseDataFlagOn ()
 
void ReleaseDataFlagOff ()
 
virtual void SetReleaseDataBeforeUpdateFlag (bool _arg)
 
virtual const bool & GetReleaseDataBeforeUpdateFlag () const
 
virtual void ReleaseDataBeforeUpdateFlagOn ()
 
virtual void SetNumberOfWorkUnits (ThreadIdType _arg)
 
virtual const ThreadIdType & GetNumberOfWorkUnits () const
 
- Public Member Functions inherited from itk::Object
unsigned long AddObserver (const EventObject &event, Command *cmd) const
 
unsigned long AddObserver (const EventObject &event, std::function< void(const EventObject &)> function) const
 
LightObject::Pointer CreateAnother () const override
 
virtual void DebugOff () const
 
virtual void DebugOn () const
 
Command * GetCommand (unsigned long tag)
 
bool GetDebug () const
 
MetaDataDictionary & GetMetaDataDictionary ()
 
const MetaDataDictionary & GetMetaDataDictionary () const
 
virtual ModifiedTimeType GetMTime () const
 
virtual const TimeStamp & GetTimeStamp () const
 
bool HasObserver (const EventObject &event) const
 
void InvokeEvent (const EventObject &)
 
void InvokeEvent (const EventObject &) const
 
virtual void Modified () const
 
void Register () const override
 
void RemoveAllObservers ()
 
void RemoveObserver (unsigned long tag) const
 
void SetDebug (bool debugFlag) const
 
void SetReferenceCount (int) override
 
void UnRegister () const noexcept override
 
void SetMetaDataDictionary (const MetaDataDictionary &rhs)
 
void SetMetaDataDictionary (MetaDataDictionary &&rrhs)
 
virtual void SetObjectName (std::string _arg)
 
virtual const std::string & GetObjectName () const
 
- Public Member Functions inherited from itk::LightObject
Pointer Clone () const
 
virtual void Delete ()
 
virtual int GetReferenceCount () const
 
void Print (std::ostream &os, Indent indent=0) const
 

Static Public Member Functions

static Pointer New ()
 
- Static Public Member Functions inherited from itk::ImageToImageFilter< TInputImage, TOutputImage >
static double GetGlobalDefaultCoordinateTolerance ()
 
static double GetGlobalDefaultDirectionTolerance ()
 
static void SetGlobalDefaultCoordinateTolerance (double)
 
static void SetGlobalDefaultDirectionTolerance (double)
 
- Static Public Member Functions inherited from itk::Object
static bool GetGlobalWarningDisplay ()
 
static void GlobalWarningDisplayOff ()
 
static void GlobalWarningDisplayOn ()
 
static Pointer New ()
 
static void SetGlobalWarningDisplay (bool val)
 
- Static Public Member Functions inherited from itk::LightObject
static void BreakOnError ()
 
static Pointer New ()
 

Static Public Attributes

static constexpr unsigned int ImageDimension = TInputImage::ImageDimension
 
static constexpr unsigned int OutputImageDimension = TOutputImage::ImageDimension
 
- Static Public Attributes inherited from itk::ImageToImageFilter< TInputImage, TOutputImage >
static constexpr unsigned int InputImageDimension = TInputImage::ImageDimension
 
static constexpr unsigned int OutputImageDimension = TOutputImage::ImageDimension
 
- Static Public Attributes inherited from itk::ImageSource< TOutputImage >
static constexpr unsigned int OutputImageDimension = TOutputImage::ImageDimension
 

Protected Member Functions

 BinShrinkImageFilter ()
 
void DynamicThreadedGenerateData (const OutputImageRegionType &outputRegionForThread) override
 
void PrintSelf (std::ostream &os, Indent indent) const override
 
- Protected Member Functions inherited from itk::ImageToImageFilter< TInputImage, TOutputImage >
virtual void CallCopyInputRegionToOutputRegion (OutputImageRegionType &destRegion, const InputImageRegionType &srcRegion)
 
virtual void CallCopyOutputRegionToInputRegion (InputImageRegionType &destRegion, const OutputImageRegionType &srcRegion)
 
 ImageToImageFilter ()
 
void VerifyInputInformation () const override
 
 ~ImageToImageFilter () override=default
 
virtual void PushBackInput (const DataObject *input)
 
virtual void PushFrontInput (const DataObject *input)
 
- Protected Member Functions inherited from itk::ImageSource< TOutputImage >
virtual void AfterThreadedGenerateData ()
 
virtual void AllocateOutputs ()
 
virtual void BeforeThreadedGenerateData ()
 
void ClassicMultiThread (ThreadFunctionType callbackFunction)
 
void GenerateData () override
 
virtual const ImageRegionSplitterBase * GetImageRegionSplitter () const
 
 ImageSource ()
 
virtual unsigned int SplitRequestedRegion (unsigned int i, unsigned int pieces, OutputImageRegionType &splitRegion)
 
 ~ImageSource () override=default
 
virtual void ThreadedGenerateData (const OutputImageRegionType &region, ThreadIdType threadId)
 
virtual bool GetDynamicMultiThreading () const
 
virtual void SetDynamicMultiThreading (bool _arg)
 
virtual void DynamicMultiThreadingOn ()
 
- Protected Member Functions inherited from itk::ProcessObject
virtual void AddInput (DataObject *input)
 
void AddOptionalInputName (const DataObjectIdentifierType &)
 
void AddOptionalInputName (const DataObjectIdentifierType &, DataObjectPointerArraySizeType idx)
 
virtual void AddOutput (DataObject *output)
 
bool AddRequiredInputName (const DataObjectIdentifierType &)
 
bool AddRequiredInputName (const DataObjectIdentifierType &, DataObjectPointerArraySizeType idx)
 
virtual void CacheInputReleaseDataFlags ()
 
virtual void GenerateOutputRequestedRegion (DataObject *output)
 
DataObject * GetInput (const DataObjectIdentifierType &key)
 
const DataObject * GetInput (const DataObjectIdentifierType &key) const
 
virtual const DataObjectPointerArraySizeType & GetNumberOfRequiredInputs () const
 
virtual const DataObjectPointerArraySizeType & GetNumberOfRequiredOutputs () const
 
bool IsIndexedInputName (const DataObjectIdentifierType &) const
 
bool IsIndexedOutputName (const DataObjectIdentifierType &) const
 
bool IsRequiredInputName (const DataObjectIdentifierType &) const
 
DataObjectPointerArraySizeType MakeIndexFromInputName (const DataObjectIdentifierType &name) const
 
DataObjectPointerArraySizeType MakeIndexFromOutputName (const DataObjectIdentifierType &name) const
 
DataObjectIdentifierType MakeNameFromInputIndex (DataObjectPointerArraySizeType idx) const
 
DataObjectIdentifierType MakeNameFromOutputIndex (DataObjectPointerArraySizeType idx) const
 
 ProcessObject ()
 
virtual void PropagateResetPipeline ()
 
virtual void PushBackInput (const DataObject *input)
 
virtual void PushFrontInput (const DataObject *input)
 
virtual void ReleaseInputs ()
 
virtual void RemoveInput (const DataObjectIdentifierType &key)
 
virtual void RemoveInput (DataObjectPointerArraySizeType)
 
virtual void RemoveOutput (const DataObjectIdentifierType &key)
 
virtual void RemoveOutput (DataObjectPointerArraySizeType idx)
 
bool RemoveRequiredInputName (const DataObjectIdentifierType &)
 
virtual void RestoreInputReleaseDataFlags ()
 
virtual void SetInput (const DataObjectIdentifierType &key, DataObject *input)
 
virtual void SetNthInput (DataObjectPointerArraySizeType idx, DataObject *input)
 
virtual void SetNthOutput (DataObjectPointerArraySizeType idx, DataObject *output)
 
void SetNumberOfIndexedInputs (DataObjectPointerArraySizeType num)
 
void SetNumberOfIndexedOutputs (DataObjectPointerArraySizeType num)
 
virtual void SetNumberOfRequiredInputs (DataObjectPointerArraySizeType)
 
virtual void SetNumberOfRequiredOutputs (DataObjectPointerArraySizeType _arg)
 
virtual void SetOutput (const DataObjectIdentifierType &name, DataObject *output)
 
virtual void SetPrimaryInput (DataObject *object)
 
virtual void SetPrimaryOutput (DataObject *object)
 
void SetRequiredInputNames (const NameArray &)
 
virtual void VerifyPreconditions () const
 
 ~ProcessObject () override
 
DataObject * GetInput (DataObjectPointerArraySizeType idx)
 
const DataObject * GetInput (DataObjectPointerArraySizeType idx) const
 
DataObject * GetPrimaryInput ()
 
const DataObject * GetPrimaryInput () const
 
virtual void SetPrimaryInputName (const DataObjectIdentifierType &key)
 
virtual const char * GetPrimaryInputName () const
 
DataObject * GetOutput (const DataObjectIdentifierType &key)
 
const DataObject * GetOutput (const DataObjectIdentifierType &key) const
 
virtual void SetPrimaryOutputName (const DataObjectIdentifierType &key)
 
virtual const char * GetPrimaryOutputName () const
 
DataObject * GetOutput (DataObjectPointerArraySizeType i)
 
const DataObject * GetOutput (DataObjectPointerArraySizeType i) const
 
DataObject * GetPrimaryOutput ()
 
const DataObject * GetPrimaryOutput () const
 
virtual bool GetThreaderUpdateProgress () const
 
virtual void ThreaderUpdateProgressOn ()
 
virtual void SetThreaderUpdateProgress (bool arg)
 
- Protected Member Functions inherited from itk::Object
 Object ()
 
bool PrintObservers (std::ostream &os, Indent indent) const
 
virtual void SetTimeStamp (const TimeStamp &timeStamp)
 
 ~Object () override
 
- Protected Member Functions inherited from itk::LightObject
virtual LightObject::Pointer InternalClone () const
 
 LightObject ()
 
virtual void PrintHeader (std::ostream &os, Indent indent) const
 
virtual void PrintTrailer (std::ostream &os, Indent indent) const
 
virtual ~LightObject ()
 

Private Member Functions

template<class TOutputType , class TInputType >
std::enable_if_t<!std::numeric_limits< TOutputType >::is_integer, TOutputType > RoundIfInteger (const TInputType &input,...)
 
template<class TOutputType , class TInputType >
std::enable_if_t< std::numeric_limits< TOutputType >::is_integer, TOutputType > RoundIfInteger (TInputType input)
 

Private Attributes

ShrinkFactorsType m_ShrinkFactors {}
 

Additional Inherited Members

- Protected Types inherited from itk::ImageToImageFilter< TInputImage, TOutputImage >
using InputToOutputRegionCopierType = ImageToImageFilterDetail::ImageRegionCopier< Self::OutputImageDimension, Self::InputImageDimension >
 
using OutputToInputRegionCopierType = ImageToImageFilterDetail::ImageRegionCopier< Self::InputImageDimension, Self::OutputImageDimension >
 
- Static Protected Member Functions inherited from itk::ImageSource< TOutputImage >
static const ImageRegionSplitterBase * GetGlobalDefaultSplitter ()
 
static ITK_THREAD_RETURN_FUNCTION_CALL_CONVENTION ThreaderCallback (void *arg)
 
- Static Protected Member Functions inherited from itk::ProcessObject
template<typename TSourceObject >
static void MakeRequiredOutputs (TSourceObject &sourceObject, const DataObjectPointerArraySizeType numberOfRequiredOutputs)
 
static constexpr float progressFixedToFloat (uint32_t fixed)
 
static uint32_t progressFloatToFixed (float f)
 
- Protected Attributes inherited from itk::ImageSource< TOutputImage >
bool m_DynamicMultiThreading { true }
 
- Protected Attributes inherited from itk::ProcessObject
TimeStamp m_OutputInformationMTime {}
 
bool m_Updating {}
 
- Protected Attributes inherited from itk::LightObject
std::atomic< int > m_ReferenceCount {}
 

Member Typedef Documentation

◆ ConstPointer

template<typename TInputImage , typename TOutputImage >
using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::ConstPointer = SmartPointer<const Self>

Definition at line 68 of file itkBinShrinkImageFilter.h.

◆ InputImageConstPointer

template<typename TInputImage , typename TOutputImage >
using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::InputImageConstPointer = typename InputImageType::ConstPointer

Definition at line 81 of file itkBinShrinkImageFilter.h.

◆ InputImagePointer

template<typename TInputImage , typename TOutputImage >
using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::InputImagePointer = typename InputImageType::Pointer

Definition at line 80 of file itkBinShrinkImageFilter.h.

◆ InputImageType

template<typename TInputImage , typename TOutputImage >
using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::InputImageType = TInputImage

Definition at line 78 of file itkBinShrinkImageFilter.h.

◆ InputIndexType

template<typename TInputImage , typename TOutputImage >
using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::InputIndexType = typename TInputImage::IndexType

Definition at line 85 of file itkBinShrinkImageFilter.h.

◆ OutputImagePointer

template<typename TInputImage , typename TOutputImage >
using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::OutputImagePointer = typename OutputImageType::Pointer

Definition at line 79 of file itkBinShrinkImageFilter.h.

◆ OutputImageRegionType

template<typename TInputImage , typename TOutputImage >
using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::OutputImageRegionType = typename TOutputImage::RegionType

Typedef to describe the output image region type.

Definition at line 88 of file itkBinShrinkImageFilter.h.

◆ OutputImageType

template<typename TInputImage , typename TOutputImage >
using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::OutputImageType = TOutputImage

Typedef to images

Definition at line 77 of file itkBinShrinkImageFilter.h.

◆ OutputIndexType

template<typename TInputImage , typename TOutputImage >
using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::OutputIndexType = typename TOutputImage::IndexType

Definition at line 84 of file itkBinShrinkImageFilter.h.

◆ OutputOffsetType

template<typename TInputImage , typename TOutputImage >
using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::OutputOffsetType = typename TOutputImage::OffsetType

Definition at line 83 of file itkBinShrinkImageFilter.h.

◆ Pointer

template<typename TInputImage , typename TOutputImage >
using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::Pointer = SmartPointer<Self>

Definition at line 67 of file itkBinShrinkImageFilter.h.

◆ Self

template<typename TInputImage , typename TOutputImage >
using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::Self = BinShrinkImageFilter

Standard class type aliases.

Definition at line 65 of file itkBinShrinkImageFilter.h.

◆ ShrinkFactorsType

template<typename TInputImage , typename TOutputImage >
using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::ShrinkFactorsType = FixedArray<unsigned int, ImageDimension>

Definition at line 94 of file itkBinShrinkImageFilter.h.

◆ Superclass

template<typename TInputImage , typename TOutputImage >
using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::Superclass = ImageToImageFilter<TInputImage, TOutputImage>

Definition at line 66 of file itkBinShrinkImageFilter.h.

Constructor & Destructor Documentation

◆ BinShrinkImageFilter()

template<typename TInputImage , typename TOutputImage >
itk::BinShrinkImageFilter< TInputImage, TOutputImage >::BinShrinkImageFilter ( )
protected

Begin concept checking End concept checking

Member Function Documentation

◆ DynamicThreadedGenerateData()

template<typename TInputImage , typename TOutputImage >
void itk::BinShrinkImageFilter< TInputImage, TOutputImage >::DynamicThreadedGenerateData ( const OutputImageRegionType &  outputRegionForThread)
overrideprotectedvirtual

If an imaging filter can be implemented as a multithreaded algorithm, the filter will provide an implementation of ThreadedGenerateData() or DynamicThreadedGenerateData(). This superclass will automatically split the output image into a number of pieces, spawn multiple threads, and call (Dynamic)ThreadedGenerateData() in each thread. Prior to spawning threads, the BeforeThreadedGenerateData() method is called. After all the threads have completed, the AfterThreadedGenerateData() method is called. If an image processing filter cannot support threading, that filter should provide an implementation of the GenerateData() method instead of providing an implementation of (Dynamic)ThreadedGenerateData(). If a filter provides a GenerateData() method as its implementation, then the filter is responsible for allocating the output data. If a filter provides a (Dynamic)ThreadedGenerateData() method as its implementation, then the output memory will allocated automatically by this superclass. The (Dynamic)ThreadedGenerateData() method should only produce the output specified by "outputThreadRegion" parameter. (Dynamic)ThreadedGenerateData() cannot write to any other portion of the output image (as this is responsibility of a different thread).

DynamicThreadedGenerateData() is the newer variant without threadId, and is the preferred signature, which is called by default. This variant can split the requested region into different number of pieces depending on current multi-processing load, which allows better load balancing. The non-dynamic (also known as classic) ThreadedGenerateData() signature has threadId, and number of pieces to be split into is known in advance. It is activated by calling this->DynamicMultiThreadingOff(); in derived class constructor. It should be used when the multi-threaded algorithm needs to pre-allocate some data structure with size dependent on the number of pieces (also known as chunks, work units, and sometimes also incorrectly as threads). Only PlatformMultiThreader guarantees that each piece will be processed in its own specific thread. Pool and TBB multi-threaders maintain a pool of threads (normally equal to number of processing cores) which they use to process the pieces. This normally results in a single thread being reused to process multiple work units.

See also
GenerateData(), SplitRequestedRegion()

Reimplemented from itk::ImageSource< TOutputImage >.

◆ GenerateInputRequestedRegion()

template<typename TInputImage , typename TOutputImage >
void itk::BinShrinkImageFilter< TInputImage, TOutputImage >::GenerateInputRequestedRegion ( )
overridevirtual

BinShrinkImageFilter needs a larger input requested region than the output requested region. As such, BinShrinkImageFilter needs to provide an implementation for GenerateInputRequestedRegion() in order to inform the pipeline execution model.

See also
ProcessObject::GenerateInputRequestedRegion()

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

◆ GenerateOutputInformation()

template<typename TInputImage , typename TOutputImage >
void itk::BinShrinkImageFilter< TInputImage, TOutputImage >::GenerateOutputInformation ( )
overridevirtual

Generate the information describing the output data. The default implementation of this method will copy information from the input to the output. A filter may override this method if its output will have different information than its input. For instance, a filter that shrinks an image will need to provide an implementation for this method that changes the spacing of the pixels. Such filters should call their superclass' implementation of this method prior to changing the information values they need (i.e. GenerateOutputInformation() should call Superclass::GenerateOutputInformation() prior to changing the information.

Reimplemented from itk::ProcessObject.

◆ GetNameOfClass()

template<typename TInputImage , typename TOutputImage >
const char* itk::BinShrinkImageFilter< TInputImage, TOutputImage >::GetNameOfClass ( ) const
overridevirtual
See also
LightObject::GetNameOfClass()

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

◆ GetShrinkFactors()

template<typename TInputImage , typename TOutputImage >
virtual const ShrinkFactorsType& itk::BinShrinkImageFilter< TInputImage, TOutputImage >::GetShrinkFactors ( ) const
virtual

Get the shrink factors.

◆ New()

template<typename TInputImage , typename TOutputImage >
static Pointer itk::BinShrinkImageFilter< TInputImage, TOutputImage >::New ( )
static

Method for creation through the object factory.

◆ PrintSelf()

template<typename TInputImage , typename TOutputImage >
void itk::BinShrinkImageFilter< TInputImage, TOutputImage >::PrintSelf ( std::ostream &  os,
Indent  indent 
) const
overrideprotectedvirtual

Methods invoked by Print() to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

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

◆ RoundIfInteger() [1/2]

template<typename TInputImage , typename TOutputImage >
template<class TOutputType , class TInputType >
std::enable_if_t<!std::numeric_limits<TOutputType>::is_integer, TOutputType> itk::BinShrinkImageFilter< TInputImage, TOutputImage >::RoundIfInteger ( const TInputType &  input,
  ... 
)
inlineprivate

Definition at line 152 of file itkBinShrinkImageFilter.h.

◆ RoundIfInteger() [2/2]

template<typename TInputImage , typename TOutputImage >
template<class TOutputType , class TInputType >
std::enable_if_t<std::numeric_limits<TOutputType>::is_integer, TOutputType> itk::BinShrinkImageFilter< TInputImage, TOutputImage >::RoundIfInteger ( TInputType  input)
inlineprivate

Round different pixel types.

Definition at line 143 of file itkBinShrinkImageFilter.h.

◆ SetShrinkFactor()

template<typename TInputImage , typename TOutputImage >
void itk::BinShrinkImageFilter< TInputImage, TOutputImage >::SetShrinkFactor ( unsigned int  i,
unsigned int  factor 
)

Set the shrink factors. Values are clamped to a minimum value of 1. Default is 1 for all dimensions.

◆ SetShrinkFactors() [1/2]

template<typename TInputImage , typename TOutputImage >
virtual void itk::BinShrinkImageFilter< TInputImage, TOutputImage >::SetShrinkFactors ( ShrinkFactorsType  _arg)
virtual

Set the shrink factors. Values are clamped to a minimum value of 1. Default is 1 for all dimensions.

◆ SetShrinkFactors() [2/2]

template<typename TInputImage , typename TOutputImage >
void itk::BinShrinkImageFilter< TInputImage, TOutputImage >::SetShrinkFactors ( unsigned int  factor)

Set the shrink factors. Values are clamped to a minimum value of 1. Default is 1 for all dimensions.

Member Data Documentation

◆ ImageDimension

template<typename TInputImage , typename TOutputImage >
constexpr unsigned int itk::BinShrinkImageFilter< TInputImage, TOutputImage >::ImageDimension = TInputImage::ImageDimension
staticconstexpr

ImageDimension enumeration.

Definition at line 91 of file itkBinShrinkImageFilter.h.

◆ m_ShrinkFactors

template<typename TInputImage , typename TOutputImage >
ShrinkFactorsType itk::BinShrinkImageFilter< TInputImage, TOutputImage >::m_ShrinkFactors {}
private

Definition at line 138 of file itkBinShrinkImageFilter.h.

◆ OutputImageDimension

template<typename TInputImage , typename TOutputImage >
constexpr unsigned int itk::BinShrinkImageFilter< TInputImage, TOutputImage >::OutputImageDimension = TOutputImage::ImageDimension
staticconstexpr

Definition at line 92 of file itkBinShrinkImageFilter.h.

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