ITK
4.1.0
Insight Segmentation and Registration Toolkit
|
#include <itkImageMomentsCalculator.h>
Compute moments of an n-dimensional image.
This class provides methods for computing the moments and related properties of a single-echo image. Computing the (non-central) moments of a large image can easily take a million times longer than computing the various other values derived from them, so we compute the moments only on explicit request, and save their values (in an ImageMomentsCalculator object) for later retrieval by the user.
The non-central moments computed by this class are not really intended for general use and are therefore in index coordinates; that is, we pretend that the index that selects a particular pixel also equals its physical coordinates. The center of gravity, central moments, principal moments and principal axes are all more generally useful and are computed in the physical coordinates defined by the Origin and Spacing parameters of the image.
The methods that return values return the values themselves rather than references because the cost is small compared to the cost of computing the moments and doing so simplifies memory management for the caller.
Definition at line 60 of file itkImageMomentsCalculator.h.
typedef AffineTransformType::Pointer itk::ImageMomentsCalculator< TImage >::AffineTransformPointer |
Definition at line 106 of file itkImageMomentsCalculator.h.
typedef AffineTransform< double, itkGetStaticConstMacro(ImageDimension) > itk::ImageMomentsCalculator< TImage >::AffineTransformType |
Affine transform for mapping to and from principal axis
Definition at line 105 of file itkImageMomentsCalculator.h.
typedef SmartPointer< const Self > itk::ImageMomentsCalculator< TImage >::ConstPointer |
Reimplemented from itk::Object.
Definition at line 67 of file itkImageMomentsCalculator.h.
typedef ImageType::ConstPointer itk::ImageMomentsCalculator< TImage >::ImageConstPointer |
Definition at line 102 of file itkImageMomentsCalculator.h.
typedef ImageType::Pointer itk::ImageMomentsCalculator< TImage >::ImagePointer |
Standard image type pointer within this class.
Definition at line 101 of file itkImageMomentsCalculator.h.
typedef TImage itk::ImageMomentsCalculator< TImage >::ImageType |
Standard image type within this class.
Definition at line 98 of file itkImageMomentsCalculator.h.
typedef Matrix< ScalarType, itkGetStaticConstMacro(ImageDimension), itkGetStaticConstMacro(ImageDimension) > itk::ImageMomentsCalculator< TImage >::MatrixType |
Standard matrix type within this class.
Definition at line 95 of file itkImageMomentsCalculator.h.
typedef SmartPointer< Self > itk::ImageMomentsCalculator< TImage >::Pointer |
Reimplemented from itk::Object.
Definition at line 66 of file itkImageMomentsCalculator.h.
typedef double itk::ImageMomentsCalculator< TImage >::ScalarType |
Standard scalar type within this class.
Definition at line 80 of file itkImageMomentsCalculator.h.
typedef ImageMomentsCalculator< TImage > itk::ImageMomentsCalculator< TImage >::Self |
Standard class typedefs.
Reimplemented from itk::Object.
Definition at line 64 of file itkImageMomentsCalculator.h.
typedef SpatialObjectType::ConstPointer itk::ImageMomentsCalculator< TImage >::SpatialObjectConstPointer |
Definition at line 90 of file itkImageMomentsCalculator.h.
typedef SpatialObjectType::Pointer itk::ImageMomentsCalculator< TImage >::SpatialObjectPointer |
Spatial Object member types used within this class.
Definition at line 89 of file itkImageMomentsCalculator.h.
typedef SpatialObject< itkGetStaticConstMacro(ImageDimension) > itk::ImageMomentsCalculator< TImage >::SpatialObjectType |
Spatial Object type within this class.
Definition at line 86 of file itkImageMomentsCalculator.h.
typedef Object itk::ImageMomentsCalculator< TImage >::Superclass |
Reimplemented from itk::Object.
Definition at line 65 of file itkImageMomentsCalculator.h.
typedef Vector< ScalarType, itkGetStaticConstMacro(ImageDimension) > itk::ImageMomentsCalculator< TImage >::VectorType |
Standard vector type within this class.
Definition at line 83 of file itkImageMomentsCalculator.h.
itk::ImageMomentsCalculator< TImage >::ImageMomentsCalculator | ( | ) | [protected] |
virtual itk::ImageMomentsCalculator< TImage >::~ImageMomentsCalculator | ( | ) | [protected, virtual] |
itk::ImageMomentsCalculator< TImage >::ImageMomentsCalculator | ( | const Self & | ) | [private] |
void itk::ImageMomentsCalculator< TImage >::Compute | ( | void | ) |
Compute moments of a new or modified image. This method computes the moments of the image given as a parameter and stores them in the object. The values of these moments and related parameters can then be retrieved by using other methods of this object.
virtual::itk::LightObject::Pointer itk::ImageMomentsCalculator< TImage >::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.
VectorType itk::ImageMomentsCalculator< TImage >::GetCenterOfGravity | ( | ) | const |
Return center of gravity, in physical coordinates. This method returns the center of gravity of the image whose moments were last computed by this object. The center of gravity is computed in physical coordinates.
MatrixType itk::ImageMomentsCalculator< TImage >::GetCentralMoments | ( | ) | const |
Return second central moments, in physical coordinates. This method returns the central second moments of the image whose moments were last computed by this object. The central moments are computed in physical coordinates.
VectorType itk::ImageMomentsCalculator< TImage >::GetFirstMoments | ( | ) | const |
Return first moments about origin, in index coordinates. This method returns the first moments around the origin of the image whose moments were last computed by this object. For simplicity, these moments are computed in index coordinates rather than physical coordinates.
virtual const char* itk::ImageMomentsCalculator< TImage >::GetNameOfClass | ( | ) | const [virtual] |
Run-time type information (and related methods).
Reimplemented from itk::Object.
AffineTransformPointer itk::ImageMomentsCalculator< TImage >::GetPhysicalAxesToPrincipalAxesTransform | ( | void | ) | const |
Get the affine transform from physical axes to principal axes This method returns an affine transform which transforms from the physical coordinate system to the principal axes coordinate system.
MatrixType itk::ImageMomentsCalculator< TImage >::GetPrincipalAxes | ( | ) | const |
Return principal axes, in physical coordinates. This method returns the principal axes of the image whose moments were last computed by this object. The moments are returned as an orthogonal matrix, each row of which corresponds to one principal moment; for example, the principal axis corresponding to the smallest principal moment is the vector m[0], where m is the value returned by this method. The matrix of principal axes is guaranteed to be a proper rotation; that is, to have determinant +1 and to preserve parity. (Unless you have foolishly made one or more of the spacing values negative; in that case, _you_ get to figure out the consequences.) The moments are computed in physical coordinates.
AffineTransformPointer itk::ImageMomentsCalculator< TImage >::GetPrincipalAxesToPhysicalAxesTransform | ( | void | ) | const |
Get the affine transform from principal axes to physical axes This method returns an affine transform which transforms from the principal axes coordinate system to physical coordinates.
VectorType itk::ImageMomentsCalculator< TImage >::GetPrincipalMoments | ( | ) | const |
Return principal moments, in physical coordinates. This method returns the principal moments of the image whose moments were last computed by this object. The moments are returned as a vector, with the principal moments ordered from smallest to largest. The moments are computed in physical coordinates.
MatrixType itk::ImageMomentsCalculator< TImage >::GetSecondMoments | ( | ) | const |
Return second moments about origin, in index coordinates. This method returns the second moments around the origin of the image whose moments were last computed by this object. For simplicity, these moments are computed in index coordinates rather than physical coordinates.
ScalarType itk::ImageMomentsCalculator< TImage >::GetTotalMass | ( | ) | const |
Return the total mass (or zeroth moment) of an image. This method returns the sum of pixel intensities (also known as the zeroth moment or the total mass) of the image whose moments were last computed by this object.
static Pointer itk::ImageMomentsCalculator< TImage >::New | ( | ) | [static] |
Method for creation through the object factory.
Reimplemented from itk::Object.
void itk::ImageMomentsCalculator< TImage >::operator= | ( | const Self & | ) | [private] |
Mutex lock to protect modification to the reference count
Reimplemented from itk::Object.
void itk::ImageMomentsCalculator< TImage >::PrintSelf | ( | std::ostream & | os, |
Indent | indent | ||
) | const [protected, virtual] |
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::Object.
virtual void itk::ImageMomentsCalculator< TImage >::SetImage | ( | const ImageType * | image | ) | [inline, virtual] |
Set the input image.
Definition at line 109 of file itkImageMomentsCalculator.h.
virtual void itk::ImageMomentsCalculator< TImage >::SetSpatialObjectMask | ( | const SpatialObject< itkGetStaticConstMacro(ImageDimension) > * | so | ) | [inline, virtual] |
Set the spatial object mask.
Definition at line 121 of file itkImageMomentsCalculator.h.
const unsigned int itk::ImageMomentsCalculator< TImage >::ImageDimension = TImage::ImageDimension [static] |
Extract the dimension of the image.
Definition at line 77 of file itkImageMomentsCalculator.h.
VectorType itk::ImageMomentsCalculator< TImage >::m_Cg [private] |
Definition at line 218 of file itkImageMomentsCalculator.h.
MatrixType itk::ImageMomentsCalculator< TImage >::m_Cm [private] |
Definition at line 219 of file itkImageMomentsCalculator.h.
ImageConstPointer itk::ImageMomentsCalculator< TImage >::m_Image [private] |
Definition at line 223 of file itkImageMomentsCalculator.h.
ScalarType itk::ImageMomentsCalculator< TImage >::m_M0 [private] |
Definition at line 215 of file itkImageMomentsCalculator.h.
VectorType itk::ImageMomentsCalculator< TImage >::m_M1 [private] |
Definition at line 216 of file itkImageMomentsCalculator.h.
MatrixType itk::ImageMomentsCalculator< TImage >::m_M2 [private] |
Definition at line 217 of file itkImageMomentsCalculator.h.
MatrixType itk::ImageMomentsCalculator< TImage >::m_Pa [private] |
Definition at line 221 of file itkImageMomentsCalculator.h.
VectorType itk::ImageMomentsCalculator< TImage >::m_Pm [private] |
Definition at line 220 of file itkImageMomentsCalculator.h.
SpatialObjectConstPointer itk::ImageMomentsCalculator< TImage >::m_SpatialObjectMask [private] |
Definition at line 224 of file itkImageMomentsCalculator.h.
bool itk::ImageMomentsCalculator< TImage >::m_Valid [private] |
Definition at line 214 of file itkImageMomentsCalculator.h.