ITK  4.2.0
Insight Segmentation and Registration Toolkit
Public Types | Public Member Functions | Protected Member Functions | Protected Attributes | Private Member Functions
itk::TemporalProcessObject Class Reference

#include <itkTemporalProcessObject.h>

+ Inheritance diagram for itk::TemporalProcessObject:
+ Collaboration diagram for itk::TemporalProcessObject:

List of all members.

Public Types

typedef SmartPointer< const SelfConstPointer
typedef SmartPointer< SelfPointer
typedef TemporalProcessObject Self
typedef ProcessObject Superclass
- Public Types inherited from itk::ProcessObject
typedef
DataObject::DataObjectIdentifierType 
DataObjectIdentifierType
typedef DataObject::Pointer DataObjectPointer
typedef std::vector
< DataObjectPointer
DataObjectPointerArray
typedef
DataObjectPointerArray::size_type 
DataObjectPointerArraySizeType
typedef std::vector
< DataObjectIdentifierType
NameArray
- Public Types inherited from itk::Object
- Public Types inherited from itk::LightObject

Public Member Functions

virtual void EnlargeOutputRequestedRegion (DataObject *output)
virtual void GenerateData ()
virtual void GenerateInputRequestedRegion ()
virtual void GenerateOutputRequestedRegion (DataObject *output)
virtual const char * GetNameOfClass () const
virtual SizeValueType GetUnitInputNumberOfFrames ()
virtual SizeValueType GetUnitOutputNumberOfFrames ()
virtual void TemporalStreamingGenerateData ()
virtual void UpdateOutputData (DataObject *output)
virtual void UpdateOutputInformation ()
- Public Member Functions inherited from itk::ProcessObject
virtual void AbortGenerateDataOff ()
virtual void AbortGenerateDataOn ()
virtual const bool & GetAbortGenerateData ()
NameArray GetInputNames () const
MultiThreader * GetMultiThreader () const
DataObjectPointerArraySizeType GetNumberOfIndexedInputs () const
DataObjectPointerArraySizeType GetNumberOfInputs () const
DataObjectPointerArraySizeType GetNumberOfOutputs () const
virtual
DataObjectPointerArraySizeType 
GetNumberOfValidRequiredInputs () const
NameArray GetOutputNames () const
virtual const float & GetProgress ()
NameArray GetRequiredInputNames () const
bool HasInput (const DataObjectIdentifierType &key) const
bool HasOutput (const DataObjectIdentifierType &key) const
virtual DataObjectPointer MakeOutput (DataObjectPointerArraySizeType idx)
virtual DataObjectPointer MakeOutput (const DataObjectIdentifierType &)
virtual void PrepareOutputs ()
virtual void PropagateRequestedRegion (DataObject *output)
virtual void ResetPipeline ()
virtual void SetAbortGenerateData (bool _arg)
virtual void SetProgress (float _arg)
virtual void Update ()
virtual void UpdateLargestPossibleRegion ()
void UpdateProgress (float amount)
DataObjectPointerArray GetInputs ()
DataObjectPointerArray GetOutputs ()
DataObjectPointerArray GetIndexedInputs ()
DataObjectPointerArray GetIndexedOutputs ()
DataObjectPointerArraySizeType GetNumberOfIndexedOutputs () const
virtual void SetReleaseDataFlag (bool flag)
virtual bool GetReleaseDataFlag () const
void ReleaseDataFlagOn ()
void ReleaseDataFlagOff ()
virtual void SetReleaseDataBeforeUpdateFlag (bool _arg)
virtual const bool & GetReleaseDataBeforeUpdateFlag ()
virtual void ReleaseDataBeforeUpdateFlagOn ()
virtual void ReleaseDataBeforeUpdateFlagOff ()
virtual void SetNumberOfThreads (ThreadIdType _arg)
virtual const ThreadIdTypeGetNumberOfThreads ()
- Public Member Functions inherited from itk::Object
unsigned long AddObserver (const EventObject &event, Command *)
unsigned long AddObserver (const EventObject &event, Command *) const
virtual LightObject::Pointer CreateAnother () const
virtual void DebugOff () const
virtual void DebugOn () const
CommandGetCommand (unsigned long tag)
bool GetDebug () const
MetaDataDictionaryGetMetaDataDictionary (void)
const MetaDataDictionaryGetMetaDataDictionary (void) const
virtual unsigned long GetMTime () const
virtual const TimeStampGetTimeStamp () const
bool HasObserver (const EventObject &event) const
void InvokeEvent (const EventObject &)
void InvokeEvent (const EventObject &) const
virtual void Modified () const
virtual void Register () const
void RemoveAllObservers ()
void RemoveObserver (unsigned long tag)
void SetDebug (bool debugFlag) const
void SetMetaDataDictionary (const MetaDataDictionary &rhs)
virtual void SetReferenceCount (int)
virtual void UnRegister () const
- Public Member Functions inherited from itk::LightObject
virtual void Delete ()
virtual int GetReferenceCount () const
 itkCloneMacro (Self)
void Print (std::ostream &os, Indent indent=0) const

Protected Member Functions

virtual void AfterTemporalStreamingGenerateData ()
virtual void BeforeTemporalStreamingGenerateData ()
virtual void EnlargeOutputRequestedTemporalRegion (TemporalDataObject *output)
virtual TemporalRegion GenerateDefaultLargestPossibleTemporalRegion ()
virtual void GenerateInputRequestedTemporalRegion ()
virtual void GenerateOutputRequestedTemporalRegion (TemporalDataObject *output)
virtual SizeValueType GetInputStencilCurrentFrameIndex ()
void PrintSelf (std::ostream &os, Indent indent) const
virtual void SetFrameSkipPerOutput (OffsetValueType _arg)
virtual void SetInputStencilCurrentFrameIndex (SizeValueType _arg)
virtual void SetUnitInputNumberOfFrames (SizeValueType _arg)
virtual void SetUnitOutputNumberOfFrames (SizeValueType _arg)
virtual std::vector
< TemporalRegion
SplitRequestedTemporalRegion ()
 TemporalProcessObject ()
virtual ~TemporalProcessObject ()
- Protected Member Functions inherited from itk::ProcessObject
virtual void AddInput (DataObject *input)
virtual void AddOutput (DataObject *output)
bool AddRequiredInputName (const DataObjectIdentifierType &)
virtual void CacheInputReleaseDataFlags ()
virtual void GenerateOutputInformation ()
virtual const
DataObjectPointerArraySizeType
GetNumberOfRequiredInputs ()
virtual const
DataObjectPointerArraySizeType
GetNumberOfRequiredOutputs ()
bool IsIndexedName (const DataObjectIdentifierType &) const
bool IsRequiredInputName (const DataObjectIdentifierType &) const
 itkLegacyMacro (virtual void RemoveInput(DataObject *input))
 itkLegacyMacro (virtual void RemoveOutput(DataObject *output))
 itkLegacyMacro (void SetNumberOfInputs(DataObjectPointerArraySizeType num))
 itkLegacyMacro (void SetNumberOfOutputs(DataObjectPointerArraySizeType num))
DataObjectPointerArraySizeType MakeIndexFromName (const DataObjectIdentifierType &) const
DataObjectIdentifierType MakeNameFromIndex (DataObjectPointerArraySizeType) const
 ProcessObject ()
virtual void PropagateResetPipeline ()
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 num, DataObject *input)
virtual void SetNthOutput (DataObjectPointerArraySizeType num, DataObject *output)
void SetNumberOfIndexedInputs (DataObjectPointerArraySizeType num)
void SetNumberOfIndexedOutputs (DataObjectPointerArraySizeType num)
virtual void SetNumberOfRequiredInputs (DataObjectPointerArraySizeType)
virtual void SetNumberOfRequiredOutputs (DataObjectPointerArraySizeType _arg)
virtual void SetOutput (const DataObjectIdentifierType &key, DataObject *output)
virtual void SetPrimaryInput (DataObject *input)
virtual void SetPrimaryOutput (DataObject *output)
void SetRequiredInputNames (const NameArray &)
virtual void VerifyInputInformation ()
virtual void VerifyPreconditions ()
 ~ProcessObject ()
DataObjectGetInput (const DataObjectIdentifierType &key)
const DataObjectGetInput (const DataObjectIdentifierType &key) const
DataObjectGetInput (DataObjectPointerArraySizeType)
const DataObjectGetInput (DataObjectPointerArraySizeType idx) const
DataObjectGetPrimaryInput ()
const DataObjectGetPrimaryInput () const
DataObjectGetOutput (const DataObjectIdentifierType &key)
const DataObjectGetOutput (const DataObjectIdentifierType &key) const
DataObjectGetOutput (DataObjectPointerArraySizeType idx)
const DataObjectGetOutput (DataObjectPointerArraySizeType idx) const
DataObjectGetPrimaryOutput ()
const DataObjectGetPrimaryOutput () const
virtual void PushBackInput (const DataObject *input)
virtual void PopBackInput ()
virtual void PushFrontInput (const DataObject *input)
virtual void PopFrontInput ()
- Protected Member Functions inherited from itk::Object
 Object ()
bool PrintObservers (std::ostream &os, Indent indent) const
virtual void SetTimeStamp (const TimeStamp &time)
virtual ~Object ()
- 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 ()

Protected Attributes

OffsetValueType m_FrameSkipPerOutput
SizeValueType m_InputStencilCurrentFrameIndex
SizeValueType m_UnitInputNumberOfFrames
SizeValueType m_UnitOutputNumberOfFrames
- Protected Attributes inherited from itk::ProcessObject
bool m_Updating
TimeStamp m_OutputInformationMTime

Private Member Functions

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

Detailed Description

TemporalProcessObject implements a ProcessObject for the itk pipeline with the notion of a temporal region.

TemporalProcessObject acts as a pass-through in the inheritance tree in order to require that subclasses properly implement handeling of temporal regions. The key parameters of a temporal process object are:

m_UnitInputNumberOfFrames m_UnitOutputNumberOfFrames m_FrameSkipPerOutput m_InputStencilCurrentFrameIndex

These parameters are protected by default so that the filter writer can choose which to expose and which to keep constant. For a full explanation of each parameter, see the individual comments with their declarations. Subclasses of TemporalProcessObject must implement one of the following:

GenerateData() TemporalStreamingGenerateData()

By default, GenerateData will split the requested temporal region of the input and output temporal data objects into sub-requests of unit input and unit output size. For example, if the output requests 3 frames and the filter has unit input size of 2 and unit output size of 1, GenerateData will produce 3 sub-requests that each require the input to provide 2 frames. Using this default behavior, TemporalStreamingGenerateData must be implemented and can assume that the RequestedTemporalRegion on the input and output are unit size. If the temporal streaming behavior is not desired, GenerateData can be implemented to directly handle the full output requested temporal region in a single pass.

Definition at line 65 of file itkTemporalProcessObject.h.


Member Typedef Documentation


Constructor & Destructor Documentation

itk::TemporalProcessObject::TemporalProcessObject ( )
protected

Constructor that initializes members

virtual itk::TemporalProcessObject::~TemporalProcessObject ( )
inlineprotectedvirtual

Empty Destructor

Definition at line 148 of file itkTemporalProcessObject.h.

itk::TemporalProcessObject::TemporalProcessObject ( const Self )
private

Member Function Documentation

virtual void itk::TemporalProcessObject::AfterTemporalStreamingGenerateData ( )
inlineprotectedvirtual

Method that gets called by GenerateData after TemporalStreamingGenerateData. Subclasses can override this method to provide post-processing for the data after producing the requested output temporal region.

Definition at line 203 of file itkTemporalProcessObject.h.

virtual void itk::TemporalProcessObject::BeforeTemporalStreamingGenerateData ( )
inlineprotectedvirtual

Method that gets called by GenerateData before TemporalStreamingGenerateData. Subclasses can override this method to provide pre-processing for the data before splitting up the requested output temporal region.

Reimplemented in itk::VideoToVideoFilter< TInputVideoStream, TOutputVideoStream >, itk::VideoToVideoFilter< itk::VideoStream< TImageToImageFilter::InputImageType >, itk::VideoStream< TImageToImageFilter::OutputImageType > >, and itk::VideoToVideoFilter< TVideoStream, TVideoStream >.

Definition at line 196 of file itkTemporalProcessObject.h.

virtual void itk::TemporalProcessObject::EnlargeOutputRequestedRegion ( DataObject output)
virtual

Override EnlargeOutputRequestedRegion, GenerateOutputRequestedRegion, and GenerateInputRequestedRegion to handle temporal regions

Reimplemented from itk::ProcessObject.

virtual void itk::TemporalProcessObject::EnlargeOutputRequestedTemporalRegion ( TemporalDataObject output)
protectedvirtual

Explicitly handle temporal regions in EnlargeRequestedRegion. The default implementation makes sure that the output requested temporal region is contained in the buffered temporal region or has a duration that is a multiple of the unit output number of frames

virtual void itk::TemporalProcessObject::GenerateData ( )
virtual

Override GenerateData to do temporal region streaming. This is analogous to the ThreadedGenerateData system implemented in ImageSource, but it functions slightly differently. Since most temporal processes are going to to need more input frames than they produce output frames for a single operation, we cannot use the same model as spatial streaming which assumes that the input requested region is fully populated before producing any output. Instead, once we have split the requested output region, we reset the requested temporal region of the input to each input requested temporal sub-region (in sequence) and re-propagate the temporal region request up the pipeline.

Reimplemented from itk::ProcessObject.

virtual TemporalRegion itk::TemporalProcessObject::GenerateDefaultLargestPossibleTemporalRegion ( )
protectedvirtual

Generate a default LargestPossibleRegion. This is used by temporal process objects that have no input. The default implementation starts at frame 0 and has infinite duration.

virtual void itk::TemporalProcessObject::GenerateInputRequestedRegion ( )
virtual

What is the input requested region that is required to produce the output requested region? By default, the largest possible region is always required but this is overridden in many subclasses. For instance, for an image processing filter where an output pixel is a simple function of an input pixel, the input requested region will be set to the output requested region. For an image processing filter where an output pixel is a function of the pixels in a neighborhood of an input pixel, then the input requested region will need to be larger than the output requested region (to avoid introducing artificial boundary conditions). This function should never request an input region that is outside the the input largest possible region (i.e. implementations of this method should crop the input requested region at the boundaries of the input largest possible region).

Reimplemented from itk::ProcessObject.

Reimplemented in itk::VideoToVideoFilter< TInputVideoStream, TOutputVideoStream >, itk::VideoToVideoFilter< itk::VideoStream< TImageToImageFilter::InputImageType >, itk::VideoStream< TImageToImageFilter::OutputImageType > >, and itk::VideoToVideoFilter< TVideoStream, TVideoStream >.

virtual void itk::TemporalProcessObject::GenerateInputRequestedTemporalRegion ( )
protectedvirtual

Explicitly handle temporal regions in GenerateInputRequestedRegion. The default implementation sets the requested temporal region on the input to start at m_FrameSkipPerOutput times the start frame of the requested output temporal region with the duration needed to produce the entire requested output.

NOTE: This default propagation will be overwritten during the UpdateOutputData phase by the temporal streaming mechanism if a subclass implements TemporalStreamingGenerateData, but this propagation is provided so that subclasses which directly implement GenerateData will work correctly.

virtual void itk::TemporalProcessObject::GenerateOutputRequestedRegion ( DataObject output)
virtual

Given one output whose requested region has been set, how should the requested regions for the remaining outputs of the process object be set? By default, all the outputs are set to the same requested region. If a filter needs to produce different requested regions for each output, for instance an image processing filter producing several outputs at different resolutions, then that filter may override this method and set the requested regions appropriatedly.

Note that a filter producing multiple outputs of different types is required to override this method. The default implementation can only correctly handle multiple outputs of the same type.

Reimplemented from itk::ProcessObject.

Reimplemented in itk::VideoToVideoFilter< TInputVideoStream, TOutputVideoStream >, itk::VideoToVideoFilter< itk::VideoStream< TImageToImageFilter::InputImageType >, itk::VideoStream< TImageToImageFilter::OutputImageType > >, and itk::VideoToVideoFilter< TVideoStream, TVideoStream >.

virtual void itk::TemporalProcessObject::GenerateOutputRequestedTemporalRegion ( TemporalDataObject output)
protectedvirtual

Explicitly handle temporal regions in GeneratOutputRegion. The default implementation checks to see if a request is currently set and if not, it sets the requested temporal region to match the largest possible temporal region

Note: If the largest possible temporal duration has infinite duration, the requested temporal region will be set to have duration 1.

Reimplemented in itk::VideoSource< TOutputVideoStream >, itk::VideoSource< TVideoStream >, and itk::VideoSource< itk::VideoStream< TImageToImageFilter::OutputImageType > >.

virtual SizeValueType itk::TemporalProcessObject::GetInputStencilCurrentFrameIndex ( )
protectedvirtual
virtual const char* itk::TemporalProcessObject::GetNameOfClass ( ) const
virtual
virtual SizeValueType itk::TemporalProcessObject::GetUnitInputNumberOfFrames ( )
virtual

Get the number of frames of input required to produce output. We don't provide a Set method because we want some filters to be able to hold this as a constant.

virtual SizeValueType itk::TemporalProcessObject::GetUnitOutputNumberOfFrames ( )
virtual

Get the number of frames of output produced for a single set of input frames. We don't provide a Set method because we want some filters to be able to hold this as a constant.

void itk::TemporalProcessObject::operator= ( const Self )
private
void itk::TemporalProcessObject::PrintSelf ( std::ostream &  os,
Indent  indent 
) const
protectedvirtual
virtual void itk::TemporalProcessObject::SetFrameSkipPerOutput ( OffsetValueType  _arg)
protectedvirtual
virtual void itk::TemporalProcessObject::SetInputStencilCurrentFrameIndex ( SizeValueType  _arg)
protectedvirtual
virtual void itk::TemporalProcessObject::SetUnitInputNumberOfFrames ( SizeValueType  _arg)
protectedvirtual
virtual void itk::TemporalProcessObject::SetUnitOutputNumberOfFrames ( SizeValueType  _arg)
protectedvirtual
virtual std::vector<TemporalRegion> itk::TemporalProcessObject::SplitRequestedTemporalRegion ( )
protectedvirtual

Split the output's RequestedTemporalRegion into the proper number of sub-regions. By default it is assumed that each sub-region processed should be generated using the set of input frames starting one frame forward in time from the previous sub-region. To change this, set FrameSkipPerOutput to something other than 1. Positive indicates forward in time while negative indicates backward in time. The set of returned TemporalRegion objects is the set of temporal regions that are needed as input to generate the entire output requested region

virtual void itk::TemporalProcessObject::TemporalStreamingGenerateData ( )
virtual

TemporalStreamingGenerateData is in charge of producing output for a single portion of the output requested temporal region. This is where the body of the process will take place. Subclasses that handle spatial data (such as video frames) may instead use this function to split the requested spatial region and process the spatial sub-regions using the mechanism implemented in ImageBase for multithreading.

Reimplemented in itk::VideoFileWriter< TInputVideoStream >, itk::VideoSource< TOutputVideoStream >, itk::VideoSource< TVideoStream >, itk::VideoSource< itk::VideoStream< TImageToImageFilter::OutputImageType > >, itk::VideoFileReader< TOutputVideoStream >, and itk::ImageFilterToVideoFilterWrapper< TImageToImageFilter >.

virtual void itk::TemporalProcessObject::UpdateOutputData ( DataObject output)
virtual

Override ProcessObject's implementation of UpdateOutputData. This is necessary because by default ProcessObject propagates the call to its inputs before calling GenerateData. This doesn't work here because we need to adjust the requested temporal region of our inputs before calling their UpdateOutputData methods

NOTE: Subclasses that don't use the temporal streaming process must override this function to call the version implemented in ProcessObject

Code: this->ProcessObject::UpdateOutputData( output )

Reimplemented from itk::ProcessObject.

virtual void itk::TemporalProcessObject::UpdateOutputInformation ( )
virtual

The default implementation of UpdateOutputInformation to handle temporal regions will compute the proper size of the output largest possible temporal region based on the largest possible temporal region of the input, the unit input/output sizes for the process, and the number of frames skipped per output

Reimplemented from itk::ProcessObject.

Reimplemented in itk::VideoToVideoFilter< TInputVideoStream, TOutputVideoStream >, itk::VideoToVideoFilter< itk::VideoStream< TImageToImageFilter::InputImageType >, itk::VideoStream< TImageToImageFilter::OutputImageType > >, itk::VideoToVideoFilter< TVideoStream, TVideoStream >, and itk::VideoFileReader< TOutputVideoStream >.


Member Data Documentation

OffsetValueType itk::TemporalProcessObject::m_FrameSkipPerOutput
protected

Number of frames to move in order to produce each set of output frames. There is no public API for this member, but subclasses can set it internally (or provide access to it) if they wish.

Definition at line 227 of file itkTemporalProcessObject.h.

SizeValueType itk::TemporalProcessObject::m_InputStencilCurrentFrameIndex
protected

Member to indicate the location of the "current frame" in the minimum set of input frames. For example, if the unit number of input frames is 6 and m_InputStencilCurrentFrameIndex = 4, this indicates that for output frame n, frames n-4 through n+1 are required, whereas if m_InputStencilCurrentFrameIndex = 0, frames n through n+5 are required.

Definition at line 234 of file itkTemporalProcessObject.h.

SizeValueType itk::TemporalProcessObject::m_UnitInputNumberOfFrames
protected

Members to indicate the number of input frames and output frames required to perform a single pass through the processing.

Definition at line 215 of file itkTemporalProcessObject.h.

SizeValueType itk::TemporalProcessObject::m_UnitOutputNumberOfFrames
protected

Definition at line 222 of file itkTemporalProcessObject.h.


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