PSMSurfaceNeighborhood is a general purpose neighborhood object that computes neighborhoods based on distance from a point. It requires a domain that provides bounds information and a distance metric. This class uses a PowerOfTwoPointTree to cache point and index values so that FindNeighborhoodPoints is somewhat optimized. PSMSurfaceNeighborhood adds the concept of distanes and neighbors in the surface tangent plane to the concept of PSMRegionNeighborhood, which has no knowledge of surfaces. More...

#include <itkPSMSurfaceNeighborhood.h>

Inheritance diagram for itk::PSMSurfaceNeighborhood< TImage >:

Collaboration diagram for itk::PSMSurfaceNeighborhood< TImage >:

Public Types
typedef TImage	ImageType

typedef PSMSurfaceNeighborhood	Self

typedef PSMRegionNeighborhood< TImage::ImageDimension >	Superclass

typedef SmartPointer< Self >	Pointer

typedef SmartPointer< const Self >	ConstPointer

typedef WeakPointer< const Self >	ConstWeakPointer

typedef ImageType::PixelType	NumericType

typedef Superclass::PointTreeType	PointTreeType

typedef vnl_vector_fixed< NumericType, TImage::ImageDimension >	GradientVectorType

typedef Superclass::PointType	PointType

typedef Superclass::PointContainerType	PointContainerType

typedef PSMImplicitSurfaceDomain< typename TImage::PixelType, Dimension >	DomainType

typedef Superclass::PointVectorType	PointVectorType

Public Types inherited from itk::PSMRegionNeighborhood< TImage::ImageDimension >
typedef PSMRegionNeighborhood	Self

typedef PSMNeighborhood< VDimension >	Superclass

typedef SmartPointer< Self >	Pointer

typedef SmartPointer< const Self >	ConstPointer

typedef WeakPointer< const Self >	ConstWeakPointer

typedef Superclass::PointType	PointType

typedef Superclass::PointContainerType	PointContainerType

typedef Superclass::DomainType	DomainType

typedef Superclass::PointVectorType	PointVectorType

typedef PSMPointTree< VDimension >	PointTreeType

Public Types inherited from itk::PSMNeighborhood< VDimension >
typedef PSMNeighborhood	Self

typedef DataObject	Superclass

typedef SmartPointer< Self >	Pointer

typedef SmartPointer< const Self >	ConstPointer

typedef WeakPointer< const Self >	ConstWeakPointer

typedef Point< double, VDimension >	PointType

typedef PSMDomain< VDimension >	DomainType

typedef PSMContainer< PointType >	PointContainerType

typedef std::vector< PSMPointIndexPair< VDimension > >	PointVectorType

Public Member Functions
	itkStaticConstMacro (Dimension, unsigned int, TImage::ImageDimension)

	itkNewMacro (Self)

	itkTypeMacro (PSMSurfaceNeighborhood, PSMRegionNeighborhood)

virtual PointVectorType	FindNeighborhoodPointsWithWeights (const PointType &, std::vector< double > &, double) const

void	PrintSelf (std::ostream &os, Indent indent) const

Public Member Functions inherited from itk::PSMRegionNeighborhood< TImage::ImageDimension >
	itkNewMacro (Self)

	itkTypeMacro (PSMRegionNeighborhood, PSMNeighborhood)

	itkStaticConstMacro (Dimension, unsigned int, VDimension)

virtual PointVectorType	FindNeighborhoodPoints (const PointType &, double) const

virtual void	SetDomain (DomainType *p)

	itkSetMacro (TreeLevels, unsigned int)

	itkGetMacro (TreeLevels, unsigned int)

void	PrintSelf (std::ostream &os, Indent indent) const

void	AddPosition (const PointType &p, unsigned int idx, int threadId=0)

void	SetPosition (const PointType &p, unsigned int idx, int threadId=0)

void	RemovePosition (unsigned int idx, int threadId=0)

Public Member Functions inherited from itk::PSMNeighborhood< VDimension >
	itkNewMacro (Self)

	itkTypeMacro (PSMNeighborhood, DataObject)

	itkStaticConstMacro (Dimension, unsigned int, VDimension)

	itkSetObjectMacro (PointContainer, PointContainerType)

	itkGetConstObjectMacro (PointContainer, PointContainerType)

	itkSetObjectMacro (Domain, DomainType)

	itkGetConstObjectMacro (Domain, DomainType)

Additional Inherited Members
Protected Types inherited from itk::PSMRegionNeighborhood< TImage::ImageDimension >
typedef PSMContainer< IteratorNodePair >	IteratorMapType

Protected Member Functions inherited from itk::PSMNeighborhood< VDimension >
void	PrintSelf (std::ostream &os, Indent indent) const

Protected Attributes inherited from itk::PSMRegionNeighborhood< TImage::ImageDimension >
PointTreeType::Pointer	m_Tree

IteratorMapType::Pointer	m_IteratorMap

unsigned int	m_TreeLevels

Detailed Description

template<class TImage>
class itk::PSMSurfaceNeighborhood< TImage >

PSMSurfaceNeighborhood is a general purpose neighborhood object that computes neighborhoods based on distance from a point. It requires a domain that provides bounds information and a distance metric. This class uses a PowerOfTwoPointTree to cache point and index values so that FindNeighborhoodPoints is somewhat optimized. PSMSurfaceNeighborhood adds the concept of distanes and neighbors in the surface tangent plane to the concept of PSMRegionNeighborhood, which has no knowledge of surfaces.

Author: Josh Cates

Definition at line 45 of file itkPSMSurfaceNeighborhood.h.

Member Typedef Documentation

template<class TImage>

typedef TImage itk::PSMSurfaceNeighborhood< TImage >::ImageType

Standard class typedefs

Definition at line 49 of file itkPSMSurfaceNeighborhood.h.

template<class TImage>

typedef Superclass::PointType itk::PSMSurfaceNeighborhood< TImage >::PointType

Inherited typedefs from parent class.

Definition at line 70 of file itkPSMSurfaceNeighborhood.h.

Member Function Documentation

template<class TImage >

PSMSurfaceNeighborhood< TImage >::PointVectorType itk::PSMSurfaceNeighborhood< TImage >::FindNeighborhoodPointsWithWeights	(	const PointType &	center,
		std::vector< double > &	weights,
		double	radius
	)		const

virtual

Compile a list of points that are within a specified radius of a given point. This implementation uses a PowerOfTwoTree to sort points according to location.

Reimplemented from itk::PSMNeighborhood< VDimension >.

Definition at line 27 of file itkPSMSurfaceNeighborhood.hxx.

 {
   const DomainType *domain = dynamic_cast<const DomainType *>(this->GetDomain());
   GradientVectorType posnormal = domain->SampleNormalVnl(center, 1.0e-10);
   //  double posnormalmag = posnormal.magnitude();
   weights.clear();
 
   // Compute bounding box of the given hypersphere.
   PointType l, u;
   for (unsigned int i = 0; i < Dimension; i++)
     {
     l[i] = center[i] - radius;
     u[i] = center[i] + radius;
     }
 
   // Grab the list of points in this bounding box.
   typename PointTreeType::PointIteratorListType pointlist
     = Superclass::m_Tree->FindPointsInRegion(l, u);
 
   // Allocate return vector.  Reserve ensures no extra copies occur.
   PointVectorType ret;
   ret.reserve(pointlist.size());
   weights.reserve(pointlist.size());
 
   std::vector<double> vec_dist;
   std::vector<double> vec_cos;
   
   // Add any point whose distance from center is less than radius to the return
   // list.
   //  double vmax = radius;
   for (typename PointTreeType::PointIteratorListType::const_iterator it = pointlist.begin();
        it != pointlist.end(); it++)
     {
     //    double dist = this->GetDomain()->Distance(center, (*it)->Point);
     double sum = 0.0;
     for (unsigned int i = 0; i < Dimension; i++)
       {
       double q = center[i] - (*it)->Point[i];
       sum += q*q;
       }
     sum = sqrt(sum);
     
     if ( sum < radius && sum > 0.0 )
       {
       GradientVectorType pn = domain->SampleNormalVnl((*it)->Point, 1.0e-10);
       double cosine   = dot_product(posnormal,pn); // normals already normalized
       // double cosine = proj / (posnormalmag * pn.magnitude() + 1.0e-6);
 
       // double dist   = 
 
       
       if ( cosine >= m_FlatCutoff)
         {
         // Determine distance to tangent plane by projecting the point onto the
         // normal.
         weights.push_back(1.0);
 
         }
       else
         {
         // Drop to zero influence over 90 degrees.
         weights.push_back(cos((m_FlatCutoff - cosine) / (1.0+m_FlatCutoff) * 1.5708));
 
         // More quickly drop to zero influence
         // weights.push_back( exp((cosine - m_FlatCutoff) / (1.0 + m_FlatCutoff) * 4.0) );
 
         //        vmax = dist;
         }
 
       ret.push_back( **it );
       }
 
     }
 
   return ret;
 }

template<class TImage>

itk::PSMSurfaceNeighborhood< TImage >::itkNewMacro ( Self )

Method for creation through the object factory.

template<class TImage>

itk::PSMSurfaceNeighborhood< TImage >::itkStaticConstMacro	(	Dimension	,
		unsigned	int,
		TImage::ImageDimension
	)

Expose the image dimension.

template<class TImage>

itk::PSMSurfaceNeighborhood< TImage >::itkTypeMacro	(	PSMSurfaceNeighborhood< TImage >	,
		PSMRegionNeighborhood
	)

Run-time type information (and related methods).

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

C:/Users/Brig/Documents/ShapeWorksStudio/src/ParticleShapeworks/include/itkPSMSurfaceNeighborhood.h
C:/Users/Brig/Documents/ShapeWorksStudio/src/ParticleShapeworks/include/itkPSMSurfaceNeighborhood.hxx

Public Types

Public Member Functions

Additional Inherited Members

Detailed Description

template<class TImage> class itk::PSMSurfaceNeighborhood< TImage >

Member Typedef Documentation

Member Function Documentation

template<class TImage>
class itk::PSMSurfaceNeighborhood< TImage >