VTK/Examples/Cxx/Images/Colored2DImageFusion
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< VTK | Examples | Cxx(Redirected from VTK/Examples/Cxx/Images/Blending2DImagesWithDifferentColorMaps)
Jump to navigationJump to searchThis example use the vtkImageBlend class for a simple fusion of two 2D images with different color maps for each of the images.
- Contributed by: Tim Hutz
Contents
Colored2DImageFusion.cxx
#include <vtkSmartPointer.h>
#include <vtkActor.h>
#include <vtkDataSet.h>
#include <vtkDataSetMapper.h>
#include <vtkImageBlend.h>
#include <vtkImageData.h>
#include <vtkImageMapToColors.h>
#include <vtkJPEGReader.h>
#include <vtkLookupTable.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
int main(int argc, char *argv[])
{
// Parse input arguments
if ( argc != 3 )
{
std::cerr << "Usage: " << argv[0]
<< " Input1Filename Input2Filename" << std::endl;
return EXIT_FAILURE;
}
vtkSmartPointer<vtkLookupTable> imgFirstColorMap =
vtkSmartPointer<vtkLookupTable>::New(); // hot color map
imgFirstColorMap->SetRange( 0.0, 255.0 );
imgFirstColorMap->SetHueRange( 0.0, 0.1 );
imgFirstColorMap->SetValueRange( 0.4, 0.8 );
imgFirstColorMap->Build();
vtkSmartPointer<vtkLookupTable> imgSecondColorMap =
vtkSmartPointer<vtkLookupTable>::New(); // cold color map
imgSecondColorMap->SetRange( 0.0, 255.0 );
imgSecondColorMap->SetHueRange( 0.67, 0.68 );
imgSecondColorMap->SetValueRange( 0.4, 0.8 );
imgSecondColorMap->Build();
vtkSmartPointer<vtkJPEGReader> imgReader =
vtkSmartPointer<vtkJPEGReader>::New();
imgReader->SetFileName( argv[1] );
vtkSmartPointer<vtkJPEGReader> imgReaderMoving =
vtkSmartPointer<vtkJPEGReader>::New();
imgReaderMoving->SetFileName( argv[2] );
vtkSmartPointer<vtkImageMapToColors> firstColorMapper =
vtkSmartPointer<vtkImageMapToColors>::New();
firstColorMapper->SetInputConnection( imgReader->GetOutputPort() );
firstColorMapper->SetLookupTable( imgFirstColorMap );
vtkSmartPointer<vtkImageMapToColors> secondColorMapper =
vtkSmartPointer<vtkImageMapToColors>::New();
secondColorMapper->SetInputConnection( imgReaderMoving->GetOutputPort() );
secondColorMapper->SetLookupTable( imgSecondColorMap );
vtkSmartPointer<vtkImageBlend> imgBlender =
vtkSmartPointer<vtkImageBlend>::New();
imgBlender->SetOpacity( 0, 0.5 );
imgBlender->SetOpacity( 1, 0.5 );
imgBlender->AddInputConnection( firstColorMapper->GetOutputPort() );
imgBlender->AddInputConnection( secondColorMapper->GetOutputPort() );
vtkSmartPointer<vtkDataSetMapper> imgDataSetMapper =
vtkSmartPointer<vtkDataSetMapper>::New();
imgDataSetMapper->SetInputConnection(imgBlender->GetOutputPort());
vtkSmartPointer<vtkActor> imgActor =
vtkSmartPointer<vtkActor>::New();
imgActor->SetMapper( imgDataSetMapper );
vtkSmartPointer<vtkRenderer> imgRenderer =
vtkSmartPointer<vtkRenderer>::New();
imgRenderer->AddActor( imgActor );
vtkSmartPointer<vtkRenderWindow> imgRenderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
imgRenderWindow->AddRenderer( imgRenderer );
vtkSmartPointer<vtkRenderWindowInteractor> imgInteractor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
imgInteractor->SetRenderWindow( imgRenderWindow );
imgInteractor->Initialize();
imgInteractor->Start();
return EXIT_SUCCESS;
}
Please try the new VTKExamples website.
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(Colored2DImageFusion)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(Colored2DImageFusion MACOSX_BUNDLE Colored2DImageFusion.cxx)
if(VTK_LIBRARIES)
target_link_libraries(Colored2DImageFusion ${VTK_LIBRARIES})
else()
target_link_libraries(Colored2DImageFusion vtkHybrid vtkWidgets)
endif()
Download and Build Colored2DImageFusion
Click here to download Colored2DImageFusion. and its CMakeLists.txt file.
Once the tarball Colored2DImageFusion.tar has been downloaded and extracted,
cd Colored2DImageFusion/build
- If VTK is installed:
cmake ..
- If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:
cmake -DVTK_DIR:PATH=/home/me/vtk_build ..
Build the project:
make
and run it:
./Colored2DImageFusion
WINDOWS USERS PLEASE NOTE: Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.