/usr/include/ITK-4.9/itkMeanSquaresHistogramImageToImageMetric.hxx is in libinsighttoolkit4-dev 4.9.0-4ubuntu1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 | /*=========================================================================
*
* 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 itkMeanSquaresHistogramImageToImageMetric_hxx
#define itkMeanSquaresHistogramImageToImageMetric_hxx
#include "itkMeanSquaresHistogramImageToImageMetric.h"
namespace itk
{
template< typename TFixedImage, typename TMovingImage >
typename MeanSquaresHistogramImageToImageMetric< TFixedImage, TMovingImage >
::MeasureType
MeanSquaresHistogramImageToImageMetric< TFixedImage, TMovingImage >
::EvaluateMeasure(HistogramType & histogram) const
{
MeasureType measure = NumericTraits< MeasureType >::ZeroValue();
HistogramIteratorType it = histogram.Begin();
HistogramIteratorType end = histogram.End();
HistogramFrequencyType totalNumberOfSamples =
NumericTraits< HistogramFrequencyType >::ZeroValue();
while ( it != end )
{
HistogramFrequencyType freq = it.GetFrequency();
if ( freq > 0 )
{
HistogramMeasurementVectorType value = it.GetMeasurementVector();
measure += ( value[0] - value[1] ) * ( value[0] - value[1] ) * freq;
totalNumberOfSamples += freq;
}
++it;
}
measure /= totalNumberOfSamples;
return measure;
}
} // End namespace itk
#endif // itkMeanSquaresHistogramImageToImageMetric_hxx
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