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 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133
|
/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://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 itkMeanImageFilter_h
#define itkMeanImageFilter_h
#include "itkBoxImageFilter.h"
#include "itkImage.h"
#include "itkNumericTraits.h"
#include "itkVariableLengthVector.h"
#include <vector>
namespace itk
{
/**
* \class MeanImageFilter
* \brief Applies an averaging filter to an image
*
* Computes an image where a given pixel is the mean value of the
* the pixels in a neighborhood about the corresponding input pixel.
*
* A mean filter is one of the family of linear filters.
*
* \sa Image
* \sa Neighborhood
* \sa NeighborhoodOperator
* \sa NeighborhoodIterator
*
* \ingroup IntensityImageFilters
* \ingroup ITKSmoothing
*
* \sphinx
* \sphinxexample{Filtering/Smoothing/ApplyMeanFilter,Mean filter an image}
* \endsphinx
*/
template <typename TInputImage, typename TOutputImage>
class ITK_TEMPLATE_EXPORT MeanImageFilter : public BoxImageFilter<TInputImage, TOutputImage>
{
public:
ITK_DISALLOW_COPY_AND_MOVE(MeanImageFilter);
/** Extract dimension from input and output image. */
static constexpr unsigned int InputImageDimension = TInputImage::ImageDimension;
static constexpr unsigned int OutputImageDimension = TOutputImage::ImageDimension;
/** Convenient type alias for simplifying declarations. */
using InputImageType = TInputImage;
using OutputImageType = TOutputImage;
/** Standard class type aliases. */
using Self = MeanImageFilter;
using Superclass = BoxImageFilter<InputImageType, OutputImageType>;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** \see LightObject::GetNameOfClass() */
itkOverrideGetNameOfClassMacro(MeanImageFilter);
/** Image type alias support */
using InputPixelType = typename InputImageType::PixelType;
using OutputPixelType = typename OutputImageType::PixelType;
using InputRealType = typename NumericTraits<InputPixelType>::RealType;
using InputImageRegionType = typename InputImageType::RegionType;
using OutputImageRegionType = typename OutputImageType::RegionType;
using InputSizeType = typename InputImageType::SizeType;
#ifdef ITK_USE_CONCEPT_CHECKING
// Begin concept checking
itkConceptMacro(InputHasNumericTraitsCheck, (Concept::HasNumericTraits<InputPixelType>));
// End concept checking
#endif
protected:
MeanImageFilter();
~MeanImageFilter() override = default;
/** MeanImageFilter can be implemented as a multithreaded filter.
* Therefore, this implementation provides a ThreadedGenerateData()
* routine which is called for each processing thread. The output
* image data is allocated automatically by the superclass prior to
* calling ThreadedGenerateData(). ThreadedGenerateData can only
* write to the portion of the output image specified by the
* parameter "outputRegionForThread"
*
* \sa BoxImageFilter::ThreadedGenerateData(),
* BoxImageFilter::GenerateData() */
void
DynamicThreadedGenerateData(const OutputImageRegionType & outputRegionForThread) override;
private:
template <typename TPixelAccessPolicy, typename TPixelType>
static void
GenerateDataInSubregion(const TInputImage & inputImage,
TOutputImage & outputImage,
const ImageRegion<InputImageDimension> & imageRegion,
const std::vector<Offset<InputImageDimension>> & neighborhoodOffsets,
const TPixelType *);
template <typename TPixelAccessPolicy, typename TValue>
static void
GenerateDataInSubregion(const TInputImage & inputImage,
TOutputImage & outputImage,
const ImageRegion<InputImageDimension> & imageRegion,
const std::vector<Offset<InputImageDimension>> & neighborhoodOffsets,
const VariableLengthVector<TValue> *);
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
# include "itkMeanImageFilter.hxx"
#endif
#endif
|