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/*
* Copyright (C) 2005-2017 Centre National d'Etudes Spatiales (CNES)
* Copyright (C) 2007-2012 Institut Mines Telecom / Telecom Bretagne
*
* This file is part of Orfeo Toolbox
*
* https://www.orfeo-toolbox.org/
*
* 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
*
* 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 otbBoxAndWhiskerImageFilter_h
#define otbBoxAndWhiskerImageFilter_h
#include "itkMacro.h"
#include "itkUnaryFunctorImageFilter.h"
namespace otb {
/** \class BoxAndWhiskerImageFilter
* \brief This class performs the detection of outlier with the Box and Whisker technique
*
* This is appropriated to perform simple outlier detection over vector data.
* The input image has to contain vector pixel through a VectorImage type.
* When an outlier is detected, it is treated to as an missing value through the function
* \code otb::EuclideanDistanceMetricWithMissingValue::SetToMissingValue() \endcode.
*
* A component is considered to as a missing value when
* \f$ \| x_i - \beta \left( x_{3/4} - x_{1/4} \right) \| > \| x_{1/2} \| \f$
* where \f$ x_{1/4}, x_{1/2}, x_{3/4} \f$ stand for the first, second (median) and
* third quantile values.
*
* \ingroup Streamed
* \sa EuclideanDistanceMetricWithMissingValue
*
* \ingroup OTBImageManipulation
*/
template <class TInputImage>
class ITK_EXPORT BoxAndWhiskerImageFilter
: public itk::InPlaceImageFilter<TInputImage>
{
public:
/** Standard class typedefs. */
typedef BoxAndWhiskerImageFilter Self;
typedef typename itk::InPlaceImageFilter<TInputImage> Superclass;
typedef itk::SmartPointer<Self> Pointer;
typedef itk::SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(BoxAndWhiskerImageFilter, InPlaceImageFilter);
/** Template parameters typedefs */
typedef typename Superclass::OutputImageType OutputImageType;
typedef typename Superclass::OutputImagePointer OutputImagePointer;
typedef typename Superclass::OutputImageRegionType OutputImageRegionType;
typedef typename Superclass::OutputImagePixelType OutputImagePixelType;
typedef typename Superclass::InputImageType InputImageType;
typedef typename Superclass::InputImagePointer InputImagePointer;
typedef typename Superclass::InputImageConstPointer InputImageConstPointer;
typedef typename Superclass::InputImageRegionType InputImageRegionType;
typedef typename Superclass::InputImagePixelType InputImagePixelType;
typedef typename InputImageType::PixelType PixelType;
typedef typename InputImageType::InternalPixelType ValueType;
typedef typename InputImageType::SizeType SizeType;
typedef typename InputImageType::RegionType RegionType;
/** Dimension */
itkStaticConstMacro(InputImageDimension, unsigned int, InputImageType::ImageDimension);
itkStaticConstMacro(OutputImageDimension, unsigned int, OutputImageType::ImageDimension);
/** Get the Radius (all to 1) */
itkSetMacro(Radius, SizeType);
itkGetConstReferenceMacro(Radius, SizeType);
/** Fix the whisker */
itkGetConstMacro(Beta, double);
itkSetMacro(Beta, double);
itkGetConstMacro(NumberFound, unsigned int);
protected:
BoxAndWhiskerImageFilter ();
~BoxAndWhiskerImageFilter () override {}
/** Main computation method implemented as a multithreaded filter */
void ThreadedGenerateData(const OutputImageRegionType& outputRegionForThread, itk::ThreadIdType threadId) override;
void GenerateOutputInformation() override;
void AllocateOutputs() override;
/** Perform the outlier detection */
PixelType PerformBoxAndWhiskerDetection(const PixelType& pixel);
private:
BoxAndWhiskerImageFilter (const Self &);
void operator =(const Self&); // not implemented
SizeType m_Radius;
double m_Beta;
long int m_NumberFound;
}; // end of class BoxAndWhiskerImageFilter
} // end of namespace otb
#ifndef OTB_MANUAL_INSTANTIATION
#include "otbBoxAndWhiskerImageFilter.txx"
#endif
#endif
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