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/*========================================================================= |
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Program: Insight Segmentation & Registration Toolkit |
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Module: $RCSfile: itkNeighborhoodOperator.txx.html,v $ |
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Language: C++ |
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Date: $Date: 2006/01/17 19:15:42 $ |
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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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#ifndef _itkNeighborhoodOperator_txx |
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#define _itkNeighborhoodOperator_txx |
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namespace itk |
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{ |
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template <class TPixel, unsigned int VDimension, class TAllocator> |
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void |
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NeighborhoodOperator<TPixel, VDimension, TAllocator> |
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::ScaleCoefficients( PixelRealType s ) |
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{ |
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for (unsigned i = 0; i < this->Size(); i++) |
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{ |
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this->operator[](i) = static_cast< TPixel >( this->operator[](i) * s ); |
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} |
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} |
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template <class TPixel, unsigned int VDimension, class TAllocator> |
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void |
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NeighborhoodOperator<TPixel, VDimension, TAllocator> |
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::FlipAxes() |
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{ |
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// To flip the operator across all of its axes, all we have to do is reverse |
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// the order of all coefficients. |
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const unsigned size = this->Size(); |
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unsigned i, swap_with; |
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PixelType temp; |
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for (i = 0; i < size/2; ++i) |
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{ |
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swap_with = size - 1 - i; |
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temp = this->operator[](i); |
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this->operator[](i) = this->operator[](swap_with); |
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this->operator[](swap_with) = temp; |
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} |
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} |
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template <class TPixel, unsigned int VDimension, class TAllocator> |
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void |
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NeighborhoodOperator<TPixel, VDimension, TAllocator> |
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::CreateDirectional() |
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{ |
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unsigned long k[VDimension]; |
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CoefficientVector coefficients; |
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coefficients = this->GenerateCoefficients(); |
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for (unsigned int i = 0; i<VDimension; ++i) |
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{ |
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if (i == this->GetDirection()) |
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{ |
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k[i] = static_cast<unsigned long>( coefficients.size() ) >> 1; |
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} |
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else |
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{ |
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k[i] = 0; |
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} |
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} |
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this->SetRadius(k); |
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this->Fill(coefficients); |
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} |
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template <class TPixel, unsigned int VDimension, class TAllocator> |
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void |
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NeighborhoodOperator<TPixel, VDimension, TAllocator> |
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::CreateToRadius(const SizeType &sz) |
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{ |
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CoefficientVector coefficients; |
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coefficients = this->GenerateCoefficients(); |
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this->SetRadius(sz); |
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this->Fill(coefficients); |
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} |
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template <class TPixel, unsigned int VDimension, class TAllocator> |
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void |
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NeighborhoodOperator<TPixel, VDimension, TAllocator> |
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::CreateToRadius(const unsigned long sz) |
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{ |
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SizeType k; |
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for (unsigned int i = 0; i< VDimension; i++) |
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{ |
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k[i] = sz; |
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} |
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this->CreateToRadius(k); |
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} |
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template <class TPixel, unsigned int VDimension, class TAllocator> |
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void |
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NeighborhoodOperator<TPixel, VDimension, TAllocator> |
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::FillCenteredDirectional(const CoefficientVector &coeff) |
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{ |
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unsigned int i; |
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unsigned long start; |
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std::slice* temp_slice; |
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CoefficientVector::const_iterator it; |
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// Initialize all coefficients to zero |
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this->InitializeToZero(); |
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// Collect slice information |
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const unsigned long stride = this->GetStride(m_Direction); |
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const unsigned long size = this->GetSize(m_Direction); |
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for (i = 0, start = 0; i <VDimension; ++i) |
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{ |
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if (i != m_Direction) |
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{ |
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start += this->GetStride(i) * (this->GetSize(i) >> 1); |
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} |
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} |
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// Compare the neighborhood size with the coefficient array size.. |
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const int sizediff = ( (int)size - (int)coeff.size() ) >>1; |
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// Create a slice iterator centered in the neighborhood. |
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if (sizediff >= 0) |
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{ |
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temp_slice = new std::slice(start + sizediff * stride, coeff.size(), |
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********************************stride); |
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it = coeff.begin(); |
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} |
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else |
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{ |
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temp_slice = new std::slice(start, size, stride); |
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it = coeff.begin() - sizediff; |
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} |
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SliceIteratorType data(this, *temp_slice); |
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delete temp_slice; |
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// Copy the coefficients into the neighborhood, truncating them if there |
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// are too many. |
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for (data = data.Begin(); data < data.End(); ++data, ++it) |
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{ |
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*data = static_cast<TPixel>(*it); |
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} |
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} |
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}// namespace itk |
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#endif |
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