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/*========================================================================= |
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Program: Insight Segmentation & Registration Toolkit |
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Module: $RCSfile: itkVectorMeanImageFunction.txx.html,v $ |
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Language: C++ |
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Date: $Date: 2006/01/17 19:15:49 $ |
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Version: $Revision: 1.4 $ |
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Copyright (c) Insight Software Consortium. All rights reserved. |
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See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details. |
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This software is distributed WITHOUT ANY WARRANTY; without even |
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
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PURPOSE. See the above copyright notices for more information. |
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=========================================================================*/ |
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DEF |
#ifndef _itkVectorMeanImageFunction_txx |
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DEF |
#define _itkVectorMeanImageFunction_txx |
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#include "itkVectorMeanImageFunction.h" |
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#include "itkNumericTraits.h" |
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#include "itkConstNeighborhoodIterator.h" |
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namespace itk |
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{ |
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/** |
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IND |
**** Constructor |
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****/ |
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template <class TInputImage, class TCoordRep> |
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VectorMeanImageFunction<TInputImage,TCoordRep> |
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::VectorMeanImageFunction() |
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{ |
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m_NeighborhoodRadius = 1; |
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} |
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/** |
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IND |
**** |
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****/ |
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template <class TInputImage, class TCoordRep> |
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void |
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VectorMeanImageFunction<TInputImage,TCoordRep> |
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::PrintSelf(std::ostream& os, Indent indent) const |
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{ |
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this->Superclass::PrintSelf(os,indent); |
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os << indent << "NeighborhoodRadius: " << m_NeighborhoodRadius << std::endl; |
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} |
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/** |
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* |
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*/ |
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template <class TInputImage, class TCoordRep> |
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typename VectorMeanImageFunction<TInputImage,TCoordRep> |
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::RealType |
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VectorMeanImageFunction<TInputImage,TCoordRep> |
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::EvaluateAtIndex(const IndexType& index) const |
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{ |
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RealType sum; |
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typedef typename TInputImage::PixelType PixelType; |
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typedef typename PixelType::ValueType PixelComponentType; |
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LEN,TDA |
typedef typename NumericTraits< PixelComponentType >::RealType PixelComponentRealType; |
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const unsigned int VectorDimension = |
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******::itk::GetVectorDimension< PixelType >::VectorDimension; |
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sum.Fill( NumericTraits< PixelComponentRealType >::Zero ); |
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if( !this->GetInputImage() ) |
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{ |
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sum.Fill( NumericTraits< PixelComponentRealType >::max() ); |
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return sum; |
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} |
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if ( !this->IsInsideBuffer( index ) ) |
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{ |
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sum.Fill( NumericTraits< PixelComponentRealType >::max() ); |
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return sum; |
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} |
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// Create an N-d neighborhood kernel, using a zeroflux boundary condition |
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typename InputImageType::SizeType kernelSize; |
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kernelSize.Fill( m_NeighborhoodRadius ); |
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ConstNeighborhoodIterator<InputImageType> |
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LEN,IND |
****it(kernelSize, this->GetInputImage(), this->GetInputImage()->GetBufferedRegion()); |
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// Set the iterator at the desired location |
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it.SetLocation(index); |
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// Walk the neighborhood |
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const unsigned int size = it.Size(); |
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for (unsigned int i = 0; i < size; ++i) |
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{ |
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for(unsigned int dim=0; dim<VectorDimension; dim++) |
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{ |
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sum[dim] += static_cast<PixelComponentRealType>( it.GetPixel(i)[dim] ); |
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} |
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} |
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for(unsigned int dim=0; dim<VectorDimension; dim++) |
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{ |
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sum[dim] /= double(it.Size()); |
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} |
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return ( sum ); |
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} |
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} // namespace itk |
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#endif |
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