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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 itkLabelMapOverlayImageFilter_h
#define itkLabelMapOverlayImageFilter_h
#include "itkLabelMapFilter.h"
#include "itkBarrier.h"
#include "itkLabelOverlayFunctor.h"
#include "itkRGBPixel.h"
namespace itk {
/** \class LabelMapOverlayImageFilter
* \brief Apply a colormap to a label map and superimpose it on an image.
*
* Apply a colormap to a label map and put it on top of the feature
* image. The feature image is typically the image from which the labeling was
* produced. Use the SetInput function to set the LabelMap, and the
* SetFeatureImage function to set the feature image.
*
* The set of colors is a good selection of distinct colors. The opacity of
* the label map can be defined by the user.
* A background label produce a gray pixel with the same intensity
* than the input one.
*
* \author Gaetan Lehmann. Biologie du Developpement et de la Reproduction, INRA de Jouy-en-Josas, France.
*
* This implementation was taken from the Insight Journal paper:
* https://hdl.handle.net/1926/584 or
* http://www.insight-journal.org/browse/publication/176
*
* \sa LabelOverlayImageFilter, LabelOverlayFunctor
* \sa LabelMapToRGBImageFilter, LabelMapToBinaryImageFilter, LabelMapToLabelImageFilter
* \ingroup ImageEnhancement MathematicalMorphologyImageFilters
* \ingroup ITKImageFusion
*/
template<typename TLabelMap, typename TFeatureImage, typename TOutputImage=Image< RGBPixel< typename TFeatureImage::PixelType >, TFeatureImage::ImageDimension > >
class ITK_TEMPLATE_EXPORT LabelMapOverlayImageFilter :
public LabelMapFilter<TLabelMap, TOutputImage>
{
public:
/** Standard class typedefs. */
typedef LabelMapOverlayImageFilter Self;
typedef LabelMapFilter<TLabelMap, TOutputImage> Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Some convenient typedefs. */
typedef TLabelMap LabelMapType;
typedef typename LabelMapType::Pointer LabelMapPointer;
typedef typename LabelMapType::ConstPointer LabelMapConstPointer;
typedef typename LabelMapType::RegionType LabelMapRegionType;
typedef typename LabelMapType::PixelType LabelMapPixelType;
typedef typename LabelMapType::LabelObjectType LabelObjectType;
typedef typename LabelObjectType::LabelType LabelType;
typedef typename LabelObjectType::LengthType LengthType;
typedef TFeatureImage FeatureImageType;
typedef typename FeatureImageType::Pointer FeatureImagePointer;
typedef typename FeatureImageType::ConstPointer FeatureImageConstPointer;
typedef typename FeatureImageType::RegionType FeatureImageRegionType;
typedef typename FeatureImageType::PixelType FeatureImagePixelType;
typedef TOutputImage OutputImageType;
typedef typename OutputImageType::Pointer OutputImagePointer;
typedef typename OutputImageType::ConstPointer OutputImageConstPointer;
typedef typename OutputImageType::RegionType OutputImageRegionType;
typedef typename OutputImageType::PixelType OutputImagePixelType;
typedef typename OutputImageType::IndexType IndexType;
typedef typename OutputImageType::SizeType SizeType;
typedef typename OutputImageType::RegionType RegionType;
typedef typename Functor::LabelOverlayFunctor<FeatureImagePixelType, LabelMapPixelType, OutputImagePixelType> FunctorType;
/** ImageDimension constants */
itkStaticConstMacro(InputImageDimension, unsigned int,
TLabelMap::ImageDimension);
itkStaticConstMacro(OutputImageDimension, unsigned int,
TOutputImage::ImageDimension);
itkStaticConstMacro(ImageDimension, unsigned int,
TOutputImage::ImageDimension);
/** Standard New method. */
itkNewMacro(Self);
/** Runtime information support. */
itkTypeMacro(LabelMapOverlayImageFilter,
ImageToImageFilter);
/** Set the feature image */
void SetFeatureImage(const TFeatureImage *input)
{
// Process object is not const-correct so the const casting is required.
this->SetNthInput( 1, const_cast<TFeatureImage *>(input) );
}
/** Get the feature image */
const FeatureImageType * GetFeatureImage()
{
return static_cast<FeatureImageType*>((this->ProcessObject::GetInput(1)));
}
/** Set the input image */
void SetInput1(const TLabelMap *input)
{
this->SetInput( input );
}
/** Set the feature image */
void SetInput2(const TFeatureImage *input)
{
this->SetFeatureImage( input );
}
/** Set/Get the opacity of the colored label image. The value must be
* between 0 and 1
*/
itkSetMacro( Opacity, double );
itkGetConstReferenceMacro( Opacity, double );
/** Set/Get the overlay functor - defaults to a reasonable set of colors.
* This can be used to apply a different colormap.
*/
virtual void SetFunctor(const FunctorType& functor)
{
if ( m_Functor != functor )
{
m_Functor = functor;
this->Modified();
}
}
FunctorType & GetFunctor() { return m_Functor; }
const FunctorType & GetFunctor() const { return m_Functor; }
protected:
LabelMapOverlayImageFilter();
~LabelMapOverlayImageFilter() ITK_OVERRIDE {};
/** LabelMapOverlayImageFilter needs the entire input be
* available. Thus, it needs to provide an implementation of
* GenerateInputRequestedRegion(). */
void GenerateInputRequestedRegion() ITK_OVERRIDE;
/** LabelMapOverlayImageFilter will produce the entire output. */
void EnlargeOutputRequestedRegion(DataObject *itkNotUsed(output)) ITK_OVERRIDE;
virtual void BeforeThreadedGenerateData() ITK_OVERRIDE;
virtual void ThreadedGenerateData(const OutputImageRegionType& outputRegionForThread, ThreadIdType threadId ) ITK_OVERRIDE;
virtual void ThreadedProcessLabelObject( LabelObjectType * labelObject ) ITK_OVERRIDE;
virtual void GenerateOutputInformation() ITK_OVERRIDE;
void PrintSelf(std::ostream& os, Indent indent) const ITK_OVERRIDE;
private:
ITK_DISALLOW_COPY_AND_ASSIGN(LabelMapOverlayImageFilter);
double m_Opacity;
typename Barrier::Pointer m_Barrier;
FunctorType m_Functor;
}; // end of class
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkLabelMapOverlayImageFilter.hxx"
#endif
#endif
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