C++ (Cpp) Pointer Examples

Example #1

File: itkStandardImageRepresenterTest.cpp Project: gang-liu/statismo

int testRepresenterForVectorImage(const std::string& datadir) {

    typedef itk::StandardImageRepresenter<itk::Vector<float, 2>, 2> RepresenterType;
    typedef GenericRepresenterTest<RepresenterType> RepresenterTestType;

    const std::string referenceFilename = datadir + "/hand_dfs/df-hand-1.vtk";
    const std::string testDatasetFilename = datadir + "/hand_dfs/df-hand-2.vtk";

    RepresenterType::Pointer representer = RepresenterType::New();
    VectorImageType::Pointer reference = loadVectorImage(referenceFilename);
    representer->SetReference(reference);

    // choose a test dataset, a point and its associate pixel value

    VectorImageType::Pointer testDataset = loadVectorImage(testDatasetFilename);
    VectorImageType::IndexType idx;
    idx.Fill(0);
    VectorImageType::PointType testPt;
    reference->TransformIndexToPhysicalPoint(idx, testPt);
    VectorImageType::PixelType testValue = testDataset->GetPixel(idx);

    RepresenterTestType representerTest(representer, testDataset, std::make_pair(testPt, testValue));

    return (representerTest.runAllTests() == true);
}

Example #2

File: buildImageIntensityModelOnROI.cpp Project: arnaudgelas/statismo

void buildImageIntensityModelOnROI(const char* referenceFilename, const char* maskFilename, const char* dir, const char* outputImageFilename) {


	typedef itk::PCAModelBuilder<RepresenterType> ModelBuilderType;
	typedef itk::StatisticalModel<RepresenterType> StatisticalModelType;
    typedef std::vector<std::string> StringVectorType;
    typedef itk::DataManager<RepresenterType> DataManagerType;

    RepresenterType::Pointer representer = RepresenterType::New();

	typedef itk::ImageFileReader< ImageType > MaskReaderType;
	MaskReaderType::Pointer maskReader = MaskReaderType::New();
	maskReader->SetFileName( maskFilename );
    maskReader->Update();

	representer->SetReference( ReadImageFromFile(referenceFilename), maskReader->GetOutput() );

    StringVectorType filenames;
    getdir(dir, filenames, ".vtk");

    DataManagerType::Pointer dataManager = DataManagerType::New();
	dataManager->SetRepresenter(representer);

    for (StringVectorType::const_iterator it = filenames.begin(); it != filenames.end(); it++) {
        std::string fullpath = (std::string(dir) + "/") + *it;

        dataManager->AddDataset( ReadImageFromFile(fullpath), fullpath.c_str());
    }

	ModelBuilderType::Pointer pcaModelBuilder = ModelBuilderType::New();
    StatisticalModelType::Pointer model = pcaModelBuilder->BuildNewModel(dataManager->GetSampleDataStructure(), 0);

    std::cout<<"dimensionality of the data: "<<model->GetDomain().GetNumberOfPoints()<<", dimension of the images: "<<(*dataManager->GetSampleDataStructure().begin())->GetSample()->GetLargestPossibleRegion().GetNumberOfPixels()<<std::endl;

    std::cout<<"writing the mean sample to a png file..."<<std::endl;
    
	typedef itk::ImageFileWriter< ImageType > ImageWriterType;
	ImageWriterType::Pointer writer = ImageWriterType::New();
	writer->SetFileName( outputImageFilename );
	writer->SetInput(model->DrawSample());
    writer->Update();

}