#include <itkBinShrinkImageFilter.h>
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.
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 >: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 |
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 |
| using | OutputToInputRegionCopierType |
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 {} |
| using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::ConstPointer = SmartPointer<const Self> |
Definition at line 67 of file itkBinShrinkImageFilter.h.
| using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::InputImageConstPointer = typename InputImageType::ConstPointer |
Definition at line 80 of file itkBinShrinkImageFilter.h.
| using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::InputImagePointer = typename InputImageType::Pointer |
Definition at line 79 of file itkBinShrinkImageFilter.h.
| using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::InputImageType = TInputImage |
Definition at line 77 of file itkBinShrinkImageFilter.h.
| using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::InputIndexType = typename TInputImage::IndexType |
Definition at line 84 of file itkBinShrinkImageFilter.h.
| using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::OutputImagePointer = typename OutputImageType::Pointer |
Definition at line 78 of file itkBinShrinkImageFilter.h.
| using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::OutputImageRegionType = typename TOutputImage::RegionType |
Typedef to describe the output image region type.
Definition at line 87 of file itkBinShrinkImageFilter.h.
| using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::OutputImageType = TOutputImage |
Typedef to images
Definition at line 76 of file itkBinShrinkImageFilter.h.
| using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::OutputIndexType = typename TOutputImage::IndexType |
Definition at line 83 of file itkBinShrinkImageFilter.h.
| using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::OutputOffsetType = typename TOutputImage::OffsetType |
Definition at line 82 of file itkBinShrinkImageFilter.h.
| using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::Pointer = SmartPointer<Self> |
Definition at line 66 of file itkBinShrinkImageFilter.h.
| using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::Self = BinShrinkImageFilter |
Standard class type aliases.
Definition at line 64 of file itkBinShrinkImageFilter.h.
| using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::ShrinkFactorsType = FixedArray<unsigned int, ImageDimension> |
Definition at line 93 of file itkBinShrinkImageFilter.h.
| using itk::BinShrinkImageFilter< TInputImage, TOutputImage >::Superclass = ImageToImageFilter<TInputImage, TOutputImage> |
Definition at line 65 of file itkBinShrinkImageFilter.h.
|
protected |
Referenced by GetNameOfClass().
|
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::LightObject.
|
overrideprotected |
|
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.
Reimplemented from itk::ProcessObject.
References ImageDimension, and OutputImageDimension.
|
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.
|
virtual |
Reimplemented from itk::ImageToImageFilter< TInputImage, TOutputImage >.
References BinShrinkImageFilter().
|
virtual |
Get the shrink factors.
|
static |
Method for creation through the object factory.
|
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::LightObject.
|
inlineprivate |
Definition at line 146 of file itkBinShrinkImageFilter.h.
|
inlineprivate |
Round different pixel types.
Definition at line 137 of file itkBinShrinkImageFilter.h.
References itk::Math::Round().
| 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.
|
virtual |
Set the shrink factors. Values are clamped to a minimum value of 1. Default is 1 for all dimensions.
| 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.
|
staticconstexpr |
ImageDimension enumeration.
Definition at line 90 of file itkBinShrinkImageFilter.h.
Referenced by GenerateInputRequestedRegion().
|
private |
Definition at line 132 of file itkBinShrinkImageFilter.h.
|
staticconstexpr |
Definition at line 91 of file itkBinShrinkImageFilter.h.
Referenced by GenerateInputRequestedRegion().