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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 itkSpeckleNoiseImageFilter_h
#define itkSpeckleNoiseImageFilter_h
#include "itkNoiseBaseImageFilter.h"
namespace itk
{
/** \class SpeckleNoiseImageFilter
*
* \brief Alter an image with speckle (multiplicative) noise.
*
* The speckle noise follows a Gamma distribution of mean 1 and standard deviation
* provided by the user. The noise is proportional to the pixel intensity.
*
* \author Gaetan Lehmann
*
* This code was contributed in the Insight Journal paper "Noise
* Simulation". https://hdl.handle.net/10380/3158
*
* \ingroup ITKImageNoise
*/
template <class TInputImage, class TOutputImage=TInputImage>
class SpeckleNoiseImageFilter :
public NoiseBaseImageFilter<TInputImage,TOutputImage >
{
public:
/** Standard class typedefs. */
typedef SpeckleNoiseImageFilter Self;
typedef NoiseBaseImageFilter< TInputImage,TOutputImage > Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Run-time type information (and related methods). */
itkTypeMacro(SpeckleNoiseImageFilter, NoiseBaseImageFilter);
/** Superclass typedefs. */
typedef typename Superclass::OutputImageType OutputImageType;
typedef typename Superclass::OutputImagePointer OutputImagePointer;
typedef typename Superclass::OutputImageRegionType OutputImageRegionType;
typedef typename Superclass::OutputImagePixelType OutputImagePixelType;
/** Some convenient typedefs. */
typedef TInputImage InputImageType;
typedef typename InputImageType::Pointer InputImagePointer;
typedef typename InputImageType::ConstPointer InputImageConstPointer;
typedef typename InputImageType::RegionType InputImageRegionType;
typedef typename InputImageType::PixelType InputImagePixelType;
itkGetConstMacro(StandardDeviation, double);
itkSetMacro(StandardDeviation, double);
#ifdef ITK_USE_CONCEPT_CHECKING
/** Begin concept checking */
itkConceptMacro(InputConvertibleToOutputCheck,
(Concept::Convertible<typename TInputImage::PixelType,
typename TOutputImage::PixelType>) );
/** End concept checking */
#endif
protected:
SpeckleNoiseImageFilter();
virtual ~SpeckleNoiseImageFilter() {
}
void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;
void ThreadedGenerateData(const OutputImageRegionType& outputRegionForThread, ThreadIdType threadId ) ITK_OVERRIDE;
private:
SpeckleNoiseImageFilter(const Self&) ITK_DELETE_FUNCTION;
void operator=(const Self&) ITK_DELETE_FUNCTION;
double m_StandardDeviation;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkSpeckleNoiseImageFilter.hxx"
#endif
#endif
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