ITK  4.4.0
Insight Segmentation and Registration Toolkit
Public Types | Static Public Member Functions | List of all members
itk::ImageHelper< NImageDimension, NLoop > Class Template Reference
Module ITKCommon

#include <itkImageHelper.h>

Detailed Description

template<unsigned int NImageDimension, unsigned int NLoop>
class itk::ImageHelper< NImageDimension, NLoop >

Fast Index/Offset computation.

These helper methods use recursive templates to unroll the loops of simple calculations. The resulting speed improvement varies from compiler to compiler. Some gcc compilers with debug turned on exhibit slight speed increases, but most compilers see improvement. The ComputeOffset performance improvement is impressive. For example, the Windows VS7.0 compiler shows almost a factor of 2 speed improvement with the recursive templates. Usually recursive templates use partial specialization to terminate loops. Here we use a technique used by Brad King in the itk Concept Checking code.

Note
This work is part of the National Alliance for Medical Image Computing (NAMIC), funded by the National Institutes of Health through the NIH Roadmap for Medical Research, Grant U54 EB005149. Information on the National Centers for Biomedical Computing can be obtained from http://commonfund.nih.gov/bioinformatics.

Definition at line 55 of file itkImageHelper.h.

Public Types

typedef ImageBase
< NImageDimension > 		ImageType
 
typedef ImageType::IndexType IndexType
 
typedef ImageType::IndexValueType IndexValueType
 
typedef ImageType::OffsetType OffsetType
 
typedef ImageType::OffsetValueType OffsetValueType
 
typedef
Concept::Detail::UniqueType_bool
< false > 		UniqueTypeBoolFalse
 
typedef
Concept::Detail::UniqueType_bool
< true > 		UniqueTypeBoolTrue
 

Static Public Member Functions

static void ComputeIndex (const IndexType &bufferedRegionIndex, OffsetValueType offset, const OffsetValueType offsetTable[], IndexType &index)
 
static void ComputeIndexInner (const IndexType &bufferedRegionIndex, OffsetValueType &offset, const OffsetValueType offsetTable[], IndexType &index, const UniqueTypeBoolFalse &)
 
static void ComputeIndexInner (const IndexType &bufferedRegionIndex, OffsetValueType &offset, const OffsetValueType[], IndexType &index, const UniqueTypeBoolTrue &)
 
static void ComputeOffset (const IndexType &bufferedRegionIndex, const IndexType &index, const OffsetValueType offsetTable[], OffsetValueType &offset)
 
static void ComputeOffsetInner (const IndexType &bufferedRegionIndex, const IndexType &index, const OffsetValueType offsetTable[], OffsetValueType &offset, const UniqueTypeBoolFalse &)
 
static void ComputeOffsetInner (const IndexType &bufferedRegionIndex, const IndexType &index, const OffsetValueType[], OffsetValueType &offset, const UniqueTypeBoolTrue &)
 

Member Typedef Documentation

template<unsigned int NImageDimension, unsigned int NLoop>
typedef ImageBase< NImageDimension > itk::ImageHelper< NImageDimension, NLoop >::ImageType

Definition at line 58 of file itkImageHelper.h.

template<unsigned int NImageDimension, unsigned int NLoop>
typedef ImageType::IndexType itk::ImageHelper< NImageDimension, NLoop >::IndexType

Definition at line 59 of file itkImageHelper.h.

template<unsigned int NImageDimension, unsigned int NLoop>
typedef ImageType::IndexValueType itk::ImageHelper< NImageDimension, NLoop >::IndexValueType

Definition at line 62 of file itkImageHelper.h.

template<unsigned int NImageDimension, unsigned int NLoop>
typedef ImageType::OffsetType itk::ImageHelper< NImageDimension, NLoop >::OffsetType

Definition at line 60 of file itkImageHelper.h.

template<unsigned int NImageDimension, unsigned int NLoop>
typedef ImageType::OffsetValueType itk::ImageHelper< NImageDimension, NLoop >::OffsetValueType

Definition at line 61 of file itkImageHelper.h.

template<unsigned int NImageDimension, unsigned int NLoop>
typedef Concept::Detail::UniqueType_bool< false > itk::ImageHelper< NImageDimension, NLoop >::UniqueTypeBoolFalse

Definition at line 63 of file itkImageHelper.h.

template<unsigned int NImageDimension, unsigned int NLoop>
typedef Concept::Detail::UniqueType_bool< true > itk::ImageHelper< NImageDimension, NLoop >::UniqueTypeBoolTrue

Definition at line 64 of file itkImageHelper.h.

Member Function Documentation

template<unsigned int NImageDimension, unsigned int NLoop>
static void itk::ImageHelper< NImageDimension, NLoop >::ComputeIndex ( const IndexType &  bufferedRegionIndex,
OffsetValueType  offset,
const OffsetValueType  offsetTable[],
IndexType &  index 
)
inlinestatic

ComputeIndex with recursive templates

Definition at line 67 of file itkImageHelper.h.

References itk::ImageHelper< NImageDimension, NLoop >::ComputeIndexInner().

Referenced by itk::ImageBase< TImage::ImageDimension >::ComputeIndex().

template<unsigned int NImageDimension, unsigned int NLoop>
static void itk::ImageHelper< NImageDimension, NLoop >::ComputeIndexInner ( const IndexType &  bufferedRegionIndex,
OffsetValueType &  offset,
const OffsetValueType  offsetTable[],
IndexType &  index,
const UniqueTypeBoolFalse &   
)
inlinestatic

Definition at line 80 of file itkImageHelper.h.

Referenced by itk::ImageHelper< NImageDimension, NLoop >::ComputeIndex().

template<unsigned int NImageDimension, unsigned int NLoop>
static void itk::ImageHelper< NImageDimension, NLoop >::ComputeIndexInner ( const IndexType &  bufferedRegionIndex,
OffsetValueType &  offset,
const OffsetValueType  [],
IndexType &  index,
const UniqueTypeBoolTrue &   
)
inlinestatic

Definition at line 97 of file itkImageHelper.h.

template<unsigned int NImageDimension, unsigned int NLoop>
static void itk::ImageHelper< NImageDimension, NLoop >::ComputeOffset ( const IndexType &  bufferedRegionIndex,
const IndexType &  index,
const OffsetValueType  offsetTable[],
OffsetValueType &  offset 
)
inlinestatic

Definition at line 109 of file itkImageHelper.h.

References itk::ImageHelper< NImageDimension, NLoop >::ComputeOffsetInner().

Referenced by itk::ImageBase< TImage::ImageDimension >::ComputeOffset().

template<unsigned int NImageDimension, unsigned int NLoop>
static void itk::ImageHelper< NImageDimension, NLoop >::ComputeOffsetInner ( const IndexType &  bufferedRegionIndex,
const IndexType &  index,
const OffsetValueType  offsetTable[],
OffsetValueType &  offset,
const UniqueTypeBoolFalse &   
)
inlinestatic

Definition at line 122 of file itkImageHelper.h.

Referenced by itk::ImageHelper< NImageDimension, NLoop >::ComputeOffset().

template<unsigned int NImageDimension, unsigned int NLoop>
static void itk::ImageHelper< NImageDimension, NLoop >::ComputeOffsetInner ( const IndexType &  bufferedRegionIndex,
const IndexType &  index,
const OffsetValueType  [],
OffsetValueType &  offset,
const UniqueTypeBoolTrue &   
)
inlinestatic

Definition at line 137 of file itkImageHelper.h.

The documentation for this class was generated from the following file:
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Generated on Mon May 13 2013 01:33:22 for ITK by   doxygen 1.8.3.1