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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 __itkLabelToRGBImageFilter_h
#define __itkLabelToRGBImageFilter_h
#include "itkUnaryFunctorImageFilter.h"
#include "itkLabelToRGBFunctor.h"
namespace itk
{
/** \class LabelToRGBImageFilter
* \brief Apply a colormap to a label image
*
* Apply a colormap to a label image. The set of colors
* is a good selection of distinct colors. The user can choose to use a background
* value. In that case, a gray pixel with the same intensity than the background
* label is produced.
*
* This code was contributed in the Insight Journal paper:
* "The watershed transform in ITK - discussion and new developments"
* by Beare R., Lehmann G.
* http://hdl.handle.net/1926/202
* http://www.insight-journal.org/browse/publication/92
*
* \author Gaetan Lehmann. Biologie du Developpement et de la Reproduction, INRA de Jouy-en-Josas, France.
* \author Richard Beare. Department of Medicine, Monash University, Melbourne, Australia.
*
* \sa ScalarToRGBPixelFunctor LabelOverlayImageFilter
* \ingroup MultiThreaded
*
* \ingroup ITKImageFusion
*/
template< typename TLabelImage, typename TOutputImage >
class LabelToRGBImageFilter:
public
UnaryFunctorImageFilter< TLabelImage, TOutputImage,
Functor::LabelToRGBFunctor<
typename TLabelImage::PixelType,
typename TOutputImage::PixelType > >
{
public:
/** Standard class typedefs. */
typedef LabelToRGBImageFilter Self;
typedef SmartPointer< Self > Pointer;
typedef SmartPointer< const Self > ConstPointer;
typedef UnaryFunctorImageFilter< TLabelImage, TOutputImage,
Functor::LabelToRGBFunctor<
typename TLabelImage::PixelType,
typename TOutputImage::PixelType > > Superclass;
typedef TOutputImage OutputImageType;
typedef TLabelImage LabelImageType;
typedef typename TOutputImage::PixelType OutputPixelType;
typedef typename TLabelImage::PixelType LabelPixelType;
typedef typename NumericTraits< OutputPixelType >::ValueType OutputPixelValueType;
/** Runtime information support. */
itkTypeMacro(LabelToRGBImageFilter, UnaryFunctorImageFilter);
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Set/Get the background value */
itkSetMacro(BackgroundValue, LabelPixelType);
itkGetConstReferenceMacro(BackgroundValue, LabelPixelType);
/** Set/Get the background color in the output image */
itkSetMacro(BackgroundColor, OutputPixelType);
itkGetConstReferenceMacro(BackgroundColor, OutputPixelType);
/** Empty the color LUT container */
void ResetColors();
/** Get number of colors in the LUT container */
unsigned int GetNumberOfColors() const;
/** Type of the color component */
typedef typename OutputPixelType::ComponentType ComponentType;
/** Add color to the LUT container */
void AddColor(ComponentType r, ComponentType g, ComponentType b);
protected:
LabelToRGBImageFilter();
virtual ~LabelToRGBImageFilter() {}
/** Process to execute before entering the multithreaded section */
void BeforeThreadedGenerateData(void);
/** Print internal ivars */
void PrintSelf(std::ostream & os, Indent indent) const;
void GenerateOutputInformation();
private:
LabelToRGBImageFilter(const Self &); //purposely not implemented
void operator=(const Self &); //purposely not implemented
OutputPixelType m_BackgroundColor;
LabelPixelType m_BackgroundValue;
};
} // end namespace itk
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkLabelToRGBImageFilter.hxx"
#endif
#endif
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