ITK/Examples/Visualization/QuickViewDemo: Difference between revisions

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(Fix viewport bug.)
(Undo revision 48269 by Lorensen (talk))
Line 1: Line 1:
==QuickView.cxx==
==QuickView.cxx==
<source lang="cpp">
<source lang="cpp">
/*=========================================================================
#include "itkImage.h"
*
#include "itkImageFileReader.h"
*  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.
*
*=========================================================================*/
#include "QuickView.h"
 
#include "itkRescaleIntensityImageFilter.h"
#include "itkRescaleIntensityImageFilter.h"
#include "itkVectorRescaleIntensityImageFilter.h"
#include "itkRGBToVectorImageAdaptor.h"
#include "itkFlipImageFilter.h"


#include "vtkVersion.h"
#include "QuickView.h"
 
#include "vtkRenderWindowInteractor.h"
#include "vtkImageMapper3D.h"
#include "vtkImageActor.h"
#include "vtkActor2D.h"
#include "vtkInteractorStyleImage.h"
#include "vtkRenderer.h"
#include "vtkCamera.h"
#include "vtkTextProperty.h"
#include "vtkTextMapper.h"
 
#include "vtkCaptureScreen.h"
#include "vtkPNGWriter.h"
#include "vtkJPEGWriter.h"
#include "vtkBMPWriter.h"
#include "vtkTIFFWriter.h"
 
#include "itkImageToVTKImageFilter.h"
 
 
typedef itk::Image<itk::RGBPixel<unsigned char>, 2>  UnsignedCharRGBImageType;
typedef itk::Image<itk::RGBPixel<float>, 2>          FloatRGBImageType;
 
typedef itk::Image<unsigned char, 2>  UnsignedCharImageType;
typedef itk::Image<char, 2>            CharImageType;
typedef itk::Image<unsigned short, 2>  UnsignedShortImageType;
typedef itk::Image<short, 2>          ShortImageType;
typedef itk::Image<unsigned int, 2>    UnsignedIntImageType;
typedef itk::Image<int, 2>            IntImageType;
typedef itk::Image<unsigned long, 2>  UnsignedLongImageType;
typedef itk::Image<long, 2>            LongImageType;
typedef itk::Image<float, 2>          FloatImageType;
typedef itk::Image<double, 2>          DoubleImageType;
 
template void QuickView::AddImage<CharImageType>(
  CharImageType *image,
  bool FlipVertical,
  std::string Description);
template void QuickView::AddImage<UnsignedShortImageType>(
  UnsignedShortImageType *image,
  bool FlipVertical,
  std::string Description);
template void QuickView::AddImage<ShortImageType>(
  ShortImageType *image,
  bool FlipVertical,
  std::string Description);
template void QuickView::AddImage<UnsignedIntImageType>(
  UnsignedIntImageType *image,
  bool FlipVertical,
  std::string Description);
template void QuickView::AddImage<IntImageType>(
  IntImageType *image,
  bool FlipVertical,
  std::string Description);
template void QuickView::AddImage<UnsignedLongImageType>(
  UnsignedLongImageType *image,
  bool FlipVertical,
  std::string Description);
template void QuickView::AddImage<LongImageType>(
  LongImageType *image,
  bool FlipVertical,
  std::string Description);
template void QuickView::AddImage<FloatImageType>(
  FloatImageType *image,
  bool FlipVertical,
  std::string Description);
template void QuickView::AddImage<DoubleImageType>(
  DoubleImageType *image,
  bool FlipVertical,
  std::string Description);
 
template< >
void QuickView::AddImage<UnsignedCharImageType>(
  UnsignedCharImageType *image,
  bool FlipVertical,
  std::string Description)
{
  if (FlipVertical)
    {
    typedef itk::FlipImageFilter< UnsignedCharImageType> FlipFilterType;
    FlipFilterType::Pointer flipper = FlipFilterType::New();
    bool flipAxes[3] = { false, true, false };
    flipper = FlipFilterType::New();
    flipper->SetFlipAxes(flipAxes);
    flipper->SetInput(image);
    flipper->Update();
    ImageInfo myImage(flipper->GetOutput(), Description);
    this->Images.push_back(myImage);
    }
  else
    {
    ImageInfo myImage(image, Description);
    this->Images.push_back(myImage);
    }
}
 
template<class TImage>
void QuickView::AddImage(
  TImage *image,
  bool FlipVertical,
  std::string Description)
{
  typedef itk::RescaleIntensityImageFilter<TImage, UnsignedCharImageType >
    rescaleFilterType;


  typename rescaleFilterType::Pointer rescaler = rescaleFilterType::New();
typedef itk::Image<unsigned char, 2> ImageType;
  rescaler->SetOutputMinimum(0);
  rescaler->SetOutputMaximum(255);
  rescaler->SetInput(image);
  rescaler->Update();


  this->AddImage(rescaler->GetOutput(), FlipVertical, Description);
static void CreateImage(ImageType* const image);
}


template< >
int main(int argc, char *argv[])
void QuickView::AddImage<UnsignedCharRGBImageType>(
  UnsignedCharRGBImageType *image,
  bool FlipVertical,
  std::string Description)
{
{
   if (FlipVertical)
   ImageType::Pointer image;
    {
    typedef itk::FlipImageFilter< UnsignedCharRGBImageType> FlipFilterType;
    FlipFilterType::Pointer flipper = FlipFilterType::New();
    bool flipAxes[3] = { false, true, false };
    flipper = FlipFilterType::New();
    flipper->SetFlipAxes(flipAxes);
    flipper->SetInput(image);
    flipper->Update();
    RGBImageInfo myImage(flipper->GetOutput(), Description);
    this->RGBImages.push_back(myImage);
    }
  else
    {
    RGBImageInfo myImage(image, Description);
    this->RGBImages.push_back(myImage);
    }
}


template< >
   if(argc < 2)
void QuickView::AddRGBImage<UnsignedCharRGBImageType>(
  UnsignedCharRGBImageType *image,
  bool FlipVertical,
  std::string Description)
{
   if (FlipVertical)
     {
     {
     typedef itk::FlipImageFilter< UnsignedCharRGBImageType> FlipFilterType;
     //std::cerr << "Required: filename" << std::endl;
    FlipFilterType::Pointer flipper = FlipFilterType::New();
     //return EXIT_FAILURE;
     bool flipAxes[3] = { false, true, false };
     image = ImageType::New();
     flipper = FlipFilterType::New();
     CreateImage(image);
     flipper->SetFlipAxes(flipAxes);
    flipper->SetInput(image);
    flipper->Update();
    RGBImageInfo myImage(flipper->GetOutput(), Description);
    this->RGBImages.push_back(myImage);
     }
     }
   else
   else
     {
  {
     RGBImageInfo myImage(image, Description);
     typedef itk::ImageFileReader<ImageType> ReaderType;
     this->RGBImages.push_back(myImage);
     ReaderType::Pointer reader = ReaderType::New();
     }
     reader->SetFileName(argv[1]);
}
     image = reader->GetOutput();
  }


template< >
   typedef itk::RescaleIntensityImageFilter< ImageType, ImageType > RescaleFilterType;
void QuickView::AddRGBImage<FloatRGBImageType>(
   RescaleFilterType::Pointer rescaleFilter = RescaleFilterType::New();
  FloatRGBImageType *image,
   rescaleFilter->SetInput(image);
  bool FlipVertical,
  rescaleFilter->SetOutputMinimum(0);
  std::string Description)
  rescaleFilter->SetOutputMaximum(255);
{
  rescaleFilter->Update();
   typedef itk::RGBToVectorImageAdaptor<FloatRGBImageType> AdaptorType;
   AdaptorType::Pointer adaptor = AdaptorType::New();
   adaptor->SetImage(image);


   typedef itk::VectorRescaleIntensityImageFilter<AdaptorType, UnsignedCharRGBImageType > rescaleFilterType;
   QuickView viewer;
   rescaleFilterType::Pointer rescaler = rescaleFilterType::New();
   viewer.AddImage(image.GetPointer());
  rescaler->SetOutputMaximumMagnitude(255);
   viewer.AddImage(rescaleFilter->GetOutput());
  rescaler->SetInput(adaptor);
   viewer.Visualize();
  rescaler->Update();
   this->AddRGBImage(rescaler->GetOutput(), FlipVertical, Description);
}
 
template< >
void QuickView::AddImage<FloatRGBImageType>(
  FloatRGBImageType *image,
  bool FlipVertical,
  std::string Description)
{
  typedef itk::RGBToVectorImageAdaptor<FloatRGBImageType> AdaptorType;
  AdaptorType::Pointer adaptor = AdaptorType::New();
   adaptor->SetImage(image);


   typedef itk::VectorRescaleIntensityImageFilter<AdaptorType, UnsignedCharRGBImageType > rescaleFilterType;
   return EXIT_SUCCESS;
  rescaleFilterType::Pointer rescaler = rescaleFilterType::New();
  rescaler->SetOutputMaximumMagnitude(255);
  rescaler->SetInput(adaptor);
  rescaler->Update();
  this->AddRGBImage(rescaler->GetOutput(), FlipVertical, Description);
}
}


void QuickView::Visualize(bool interact)
void CreateImage(ImageType* const image)
{
{
  unsigned int rendererSize = 300;
   // Create an image with 2 connected components
  unsigned int numberOfImages = this->Images.size() + this->RGBImages.size();
   ImageType::IndexType corner = {{0,0}};
 
  // Setup the render window and interactor
  vtkSmartPointer<vtkRenderWindow> renderWindow =
    vtkSmartPointer<vtkRenderWindow>::New();
  renderWindow->SetSize(rendererSize * numberOfImages, rendererSize);
 
  vtkSmartPointer<vtkRenderWindowInteractor> interactor =
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
  interactor->SetRenderWindow(renderWindow);
 
   // Render all of the images
  double step = 1./(static_cast<double>(numberOfImages));
  std::vector<double*> viewports;
 
  typedef itk::ImageToVTKImageFilter<itk::Image<unsigned char, 2> >
    ConnectorType;
  typedef itk::ImageToVTKImageFilter<itk::Image<itk::RGBPixel<unsigned char>, 2> >
    RGBConnectorType;
   std::vector<ConnectorType::Pointer>    connectors; // Force the connectors to persist (not lose scope) after each iteration of the loop
  std::vector<RGBConnectorType::Pointer> RGBconnectors; // Force the connectors to persist after each iteration of the loop
 
  double background[6] = {.4, .5, .6, .6, .5, .4};
 
  vtkSmartPointer<vtkCamera> sharedCamera =
    vtkSmartPointer<vtkCamera>::New();
 
  for(unsigned int i = 0; i < this->Images.size(); i++)
    {
    ConnectorType::Pointer connector = ConnectorType::New();
    connectors.push_back(connector);
    connector->SetInput(this->Images[i].m_Image);
 
    // (xmin, ymin, xmax, ymax)
    double viewport[4] =
      {static_cast<double>(i)*step, 0.0, static_cast<double>(i+1)*step, 1.0};
    viewports.push_back(viewport);
    vtkSmartPointer<vtkImageActor> actor =
      vtkSmartPointer<vtkImageActor>::New();
#if VTK_MAJOR_VERSION <= 5
    actor->SetInput(connector->GetOutput());
#else
    connector->Update();
    actor->GetMapper()->SetInputData(connector->GetOutput());
#endif
 
    // Setup renderer
    vtkSmartPointer<vtkRenderer> renderer =
      vtkSmartPointer<vtkRenderer>::New();
    renderWindow->AddRenderer(renderer);
    renderer->SetViewport(viewports[i]);
    renderer->SetBackground(background);
    if (m_ShareCamera)
      {
      renderer->SetActiveCamera(sharedCamera);
      }
    else
      {
      vtkSmartPointer<vtkCamera> aCamera =
        vtkSmartPointer<vtkCamera>::New();
      renderer->SetActiveCamera(aCamera);
      }
    std::rotate(background, background + 1, background + 6);
 
    if (this->Images[i].m_Description != "")
      {
      vtkSmartPointer<vtkTextProperty> textProperty =
        vtkSmartPointer<vtkTextProperty>::New();
      textProperty->SetFontSize(10);
      textProperty->SetFontFamilyToCourier();
      textProperty->SetJustificationToCentered();


      vtkSmartPointer<vtkTextMapper> textMapper =
  ImageType::SizeType size;
        vtkSmartPointer<vtkTextMapper>::New();
  unsigned int NumRows = 200;
      textMapper->SetTextProperty(textProperty);
  unsigned int NumCols = 300;
      textMapper->SetInput(this->Images[i].m_Description.c_str());
  size[0] = NumRows;
  size[1] = NumCols;


      vtkSmartPointer<vtkActor2D> textActor =
  ImageType::RegionType region(corner, size);
        vtkSmartPointer<vtkActor2D>::New();
      textActor->SetMapper(textMapper);
      textActor->SetPosition(rendererSize/2, 16);
      renderer->AddActor(textActor);
      }


    renderer->AddActor(actor);
  image->SetRegions(region);
    renderer->ResetCamera();
  image->Allocate();
    }


   unsigned int j = 0;
   // Make a square
   for(unsigned int i = this->Images.size();
   for(unsigned int r = 40; r < 100; r++)
      i < this->RGBImages.size() + this->Images.size();
      i++, j++)
     {
     {
     RGBConnectorType::Pointer connector = RGBConnectorType::New();
     for(unsigned int c = 40; c < 100; c++)
    RGBconnectors.push_back(connector);
    connector->SetInput(this->RGBImages[j].m_Image);
 
    // (xmin, ymin, xmax, ymax)
    double viewport[4] =
      {static_cast<double>(i)*step, 0.0, static_cast<double>(i+1)*step, 1.0};
    viewports.push_back(viewport);
    vtkSmartPointer<vtkImageActor> actor =
      vtkSmartPointer<vtkImageActor>::New();
#if VTK_MAJOR_VERSION <= 5
    actor->SetInput(connector->GetOutput());
#else
    connector->Update();
    actor->GetMapper()->SetInputData(connector->GetOutput());
#endif
 
    // Setup renderer
    vtkSmartPointer<vtkRenderer> renderer =
      vtkSmartPointer<vtkRenderer>::New();
    renderWindow->AddRenderer(renderer);
    renderer->SetViewport(viewports[i]);
    renderer->SetBackground(background);
    if (m_ShareCamera)
      {
      renderer->SetActiveCamera(sharedCamera);
      }
    else
      {
      vtkSmartPointer<vtkCamera> aCamera =
        vtkSmartPointer<vtkCamera>::New();
      renderer->SetActiveCamera(aCamera);
      }
    std::rotate(background, background + 1, background + 6);
 
    if (this->RGBImages[j].m_Description != "")
       {
       {
       vtkSmartPointer<vtkTextProperty> textProperty =
       ImageType::IndexType pixelIndex;
        vtkSmartPointer<vtkTextProperty>::New();
       pixelIndex[0] = r;
       textProperty->SetFontSize(10);
       pixelIndex[1] = c;
      textProperty->SetFontFamilyToCourier();
      textProperty->SetJustificationToCentered();
 
      vtkSmartPointer<vtkTextMapper> textMapper =
        vtkSmartPointer<vtkTextMapper>::New();
       textMapper->SetTextProperty(textProperty);
      textMapper->SetInput(this->RGBImages[j].m_Description.c_str());


       vtkSmartPointer<vtkActor2D> textActor =
       image->SetPixel(pixelIndex, 15);
        vtkSmartPointer<vtkActor2D>::New();
      textActor->SetMapper(textMapper);
      textActor->SetPosition(rendererSize/2, 16);
      renderer->AddActor(textActor);
       }
       }
    renderer->AddActor(actor);
    renderer->ResetCamera();
    }
  renderWindow->Render();
  if( m_Snapshot )
    {
    std::string filename;
    std::stringstream temp;
    temp << m_SnapshotPath << m_SnapshotPrefix << m_Counter << ".";
    filename = temp.str();
    filename.append( m_SnapshotExtension );
    if( m_SnapshotExtension == "png" )
      {
      vtkCaptureScreen< vtkPNGWriter > capture( renderWindow );
      capture( filename );
      }
    if( ( m_SnapshotExtension == "jpg" ) || ( m_SnapshotExtension == "jpeg" ) )
      {
      vtkCaptureScreen< vtkJPEGWriter > capture( renderWindow );
      capture( filename );
      }
    if( m_SnapshotExtension == "bmp" )
      {
      vtkCaptureScreen< vtkBMPWriter > capture( renderWindow );
      capture( filename );
      }
    if( ( m_SnapshotExtension == "tif" ) || ( m_SnapshotExtension == "tiff" ) )
      {
      vtkCaptureScreen< vtkTIFFWriter > capture( renderWindow );
      capture( filename );
      }
    m_Counter++;
     }
     }
}


  vtkSmartPointer<vtkInteractorStyleImage> style =
    vtkSmartPointer<vtkInteractorStyleImage>::New();
  interactor->SetInteractorStyle(style);
  if (interact)
    {
    interactor->Start();
    }
}
</source>
</source>


{{ITKCMakeLists|QuickView}}
{{ITKCMakeLists|QuickView}}

Revision as of 20:05, 2 July 2012

QuickView.cxx

<source lang="cpp">

  1. include "itkImage.h"
  2. include "itkImageFileReader.h"
  3. include "itkRescaleIntensityImageFilter.h"
  1. include "QuickView.h"

typedef itk::Image<unsigned char, 2> ImageType;

static void CreateImage(ImageType* const image);

int main(int argc, char *argv[]) {

 ImageType::Pointer image;
 if(argc < 2)
   {
   //std::cerr << "Required: filename" << std::endl;
   //return EXIT_FAILURE;
   image = ImageType::New();
   CreateImage(image);
   }
 else
 {
   typedef itk::ImageFileReader<ImageType> ReaderType;
   ReaderType::Pointer reader = ReaderType::New();
   reader->SetFileName(argv[1]);
   image = reader->GetOutput();
 }
 typedef itk::RescaleIntensityImageFilter< ImageType, ImageType > RescaleFilterType;
 RescaleFilterType::Pointer rescaleFilter = RescaleFilterType::New();
 rescaleFilter->SetInput(image);
 rescaleFilter->SetOutputMinimum(0);
 rescaleFilter->SetOutputMaximum(255);
 rescaleFilter->Update();
 QuickView viewer;
 viewer.AddImage(image.GetPointer());
 viewer.AddImage(rescaleFilter->GetOutput());
 viewer.Visualize();
 return EXIT_SUCCESS;

}

void CreateImage(ImageType* const image) {

 // Create an image with 2 connected components
 ImageType::IndexType corner = Template:0,0;
 ImageType::SizeType size;
 unsigned int NumRows = 200;
 unsigned int NumCols = 300;
 size[0] = NumRows;
 size[1] = NumCols;
 ImageType::RegionType region(corner, size);
 image->SetRegions(region);
 image->Allocate();
 // Make a square
 for(unsigned int r = 40; r < 100; r++)
   {
   for(unsigned int c = 40; c < 100; c++)
     {
     ImageType::IndexType pixelIndex;
     pixelIndex[0] = r;
     pixelIndex[1] = c;
     image->SetPixel(pixelIndex, 15);
     }
   }

}

</source>

CMakeLists.txt

<syntaxhighlight lang="cmake"> cmake_minimum_required(VERSION 3.9.5)

project(QuickView)

find_package(ITK REQUIRED) include(${ITK_USE_FILE}) if (ITKVtkGlue_LOADED)

 find_package(VTK REQUIRED)
 include(${VTK_USE_FILE})

endif()

add_executable(QuickView MACOSX_BUNDLE QuickView.cxx)

if( "${ITK_VERSION_MAJOR}" LESS 4 )

 target_link_libraries(QuickView ITKReview ${ITK_LIBRARIES})

else( "${ITK_VERSION_MAJOR}" LESS 4 )

 target_link_libraries(QuickView ${ITK_LIBRARIES})

endif( "${ITK_VERSION_MAJOR}" LESS 4 )

</syntaxhighlight>

Download and Build QuickView

Click here to download QuickView and its CMakeLists.txt file. Once the tarball QuickView.tar has been downloaded and extracted,

cd QuickView/build
  • If ITK is installed:
cmake ..
  • If ITK is not installed but compiled on your system, you will need to specify the path to your ITK build:
cmake -DITK_DIR:PATH=/home/me/itk_build ..

Build the project:

make

and run it:

./QuickView

WINDOWS USERS PLEASE NOTE: Be sure to add the ITK bin directory to your path. This will resolve the ITK dll's at run time.

Building All of the Examples

Many of the examples in the ITK Wiki Examples Collection require VTK. You can build all of the the examples by following these instructions. If you are a new VTK user, you may want to try the Superbuild which will build a proper ITK and VTK.

ItkVtkGlue

ITK >= 4

For examples that use QuickView (which depends on VTK), you must have built ITK with Module_ITKVtkGlue=ON.

ITK < 4

Some of the ITK Examples require VTK to display the images. If you download the entire ITK Wiki Examples Collection, the ItkVtkGlue directory will be included and configured. If you wish to just build a few examples, then you will need to download ItkVtkGlue and build it. When you run cmake it will ask you to specify the location of the ItkVtkGlue binary directory.