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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#ifndef itkNeighborhoodInnerProduct_hxx
#define itkNeighborhoodInnerProduct_hxx
#include "itkNeighborhoodInnerProduct.h"
#include "itkNumericTraits.h"
namespace itk
{
template< typename TImage, typename TOperator, typename TComputation >
typename NeighborhoodInnerProduct< TImage, TOperator, TComputation >::OutputPixelType
NeighborhoodInnerProduct< TImage, TOperator, TComputation >
::operator()(const std::slice & s,
const ConstNeighborhoodIterator< TImage > & it,
const OperatorType & op) const
{
typename OperatorType::ConstIterator o_it;
typedef typename TImage::PixelType InputPixelType;
typedef typename NumericTraits< InputPixelType >::RealType InputPixelRealType;
typedef typename NumericTraits< InputPixelRealType >::AccumulateType AccumulateRealType;
AccumulateRealType sum = NumericTraits< AccumulateRealType >::ZeroValue();
typedef typename NumericTraits<OutputPixelType>::ValueType
OutputPixelValueType;
o_it = op.Begin();
const typename OperatorType::ConstIterator op_end = op.End();
const unsigned int start = static_cast< unsigned int >( s.start() );
const unsigned int stride = static_cast< unsigned int >( s.stride() );
for ( unsigned int i = start; o_it < op_end; i += stride, ++o_it )
{
sum += static_cast< AccumulateRealType >(
static_cast< OutputPixelValueType >( *o_it ) *
static_cast< InputPixelRealType >( it.GetPixel(i) ) );
}
return static_cast< OutputPixelType >( sum );
}
template< typename TImage, typename TOperator, typename TComputation >
typename NeighborhoodInnerProduct< TImage, TOperator, TComputation >::OutputPixelType
NeighborhoodInnerProduct< TImage, TOperator, TComputation >
::operator()(const std::slice & s,
/* const ImageBoundaryCondition<TImage> *,*/
const NeighborhoodType & N,
const OperatorType & op) const
{
typename OperatorType::ConstIterator o_it;
typedef typename TImage::PixelType InputPixelType;
typedef typename NumericTraits< InputPixelType >::RealType InputPixelRealType;
typedef typename NumericTraits< InputPixelRealType >::AccumulateType AccumulateRealType;
AccumulateRealType sum = NumericTraits< AccumulateRealType >::ZeroValue();
typedef typename NumericTraits<OutputPixelType>::ValueType
OutputPixelValueType;
o_it = op.Begin();
const typename OperatorType::ConstIterator op_end = op.End();
const unsigned int start = static_cast< unsigned int >( s.start() );
const unsigned int stride = static_cast< unsigned int >( s.stride() );
for ( unsigned int i = start; o_it < op_end; i += stride, ++o_it )
{
sum += static_cast< AccumulateRealType >(
static_cast< OutputPixelValueType >( *o_it ) *
static_cast< InputPixelRealType >( N[i] ) );
}
return static_cast< OutputPixelType >( sum );
}
} // end namespace itk
#endif
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