ITK 读多张dcm序列(并用VTK重建显示出来)

这个是ITK的例子，读dcm文件夹

https://itk.org/Doxygen/html/Examples_2IO_2DicomSeriesReadImageWrite2_8cxx-example.html#_a2

下面程序可以亲测，根据上面的官网例子编写：搞了半天多，终于调通：

下面实现的是读一组CT dcm文件，并执行面绘制。顺便提一句：.dcm序列的命名最好是有规则可循的，否则会读不全。

中间用到ITK转换VTK的函数，有兴趣的可以看看。

#include <vtkImageData.h>
#include <vtkProperty.h>
#include <vtkDataSetMapper.h>
#include <vtkRendererCollection.h>
#include <itkImageToVTKImageFilter.h>
#include <vtkPolyDataMapper.h>
#include <vtkPolyData.h>
#include <vtkPointData.h>
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkMarchingCubes.h"
#include "vtkStripper.h"
#include "vtkActor.h"
#include "vtkSmoothPolyDataFilter.h"
#include "vtkPolyDataNormals.h"
#include "vtkImageShrink3D.h"
#include "vtkDecimatePro.h"
#include "vtkProperty.h"
#include <vtkInteractorStyleImage.h>
#include "itkImageToVTKImageFilter.h"
#include "itkImage.h"
#include "itkGDCMImageIO.h"
#include "itkGDCMSeriesFileNames.h"
#include "itkImageSeriesReader.h"
VTK_MODULE_INIT(vtkRenderingOpenGL2);
VTK_MODULE_INIT(vtkInteractionStyle);
using PixelType = float;
constexpr unsigned int Dimension = 3;
using ImageType = itk::Image< PixelType, Dimension >;

// Software Guide : EndCodeSnippet
int main( int argc, char* argv[] )
{
    using ReaderType = itk::ImageSeriesReader< ImageType >;
    using ImageIOType = itk::GDCMImageIO;
    using NamesGeneratorType = itk::GDCMSeriesFileNames;
    ReaderType::Pointer reader = ReaderType::New();
    ImageIOType::Pointer dicomIO = ImageIOType::New();
    reader->SetImageIO( dicomIO );
    NamesGeneratorType::Pointer nameGenerator = NamesGeneratorType::New();
    nameGenerator->SetUseSeriesDetails( true );
    nameGenerator->SetDirectory( "/Users/mac/Desktop/我的文件/血管分割项目/CT数据/CT扫描数据" );
    
    using SeriesIdContainer = std::vector< std::string >;
    const SeriesIdContainer & seriesUID = nameGenerator->GetSeriesUIDs();
    auto seriesItr = seriesUID.begin();
    auto seriesEnd = seriesUID.end();
    
    using FileNamesContainer = std::vector< std::string >;
    FileNamesContainer fileNames ;
    std::string seriesIdentifier;
    while( seriesItr != seriesEnd )
    {
        
        seriesIdentifier = seriesItr->c_str();
        fileNames = nameGenerator->GetFileNames( seriesIdentifier );
        ++seriesItr;
    }
    
    reader->SetFileNames( fileNames );
    
    try
    {
        reader->Update();
    }
    catch (itk::ExceptionObject &ex)
    {
        std::cout << ex << std::endl;
        return EXIT_FAILURE;
    }
    ImageType::SizeType imgSize =  reader->GetOutput()->GetLargestPossibleRegion().GetSize();
    cout << "read done！Original size: " << imgSize  << endl;
    
    typedef itk::ImageToVTKImageFilter< ImageType> itkTovtkFilterType;
    itkTovtkFilterType::Pointer itkTovtkImageFilter = itkTovtkFilterType::New();
    itkTovtkImageFilter->SetInput(reader->GetOutput());
    itkTovtkImageFilter->Update();
    
    vtkSmartPointer<vtkMarchingCubes> vesselExtractor = vtkMarchingCubes::New();
    vesselExtractor->SetInputData(itkTovtkImageFilter->GetOutput());
    vesselExtractor->SetNumberOfContours(10);
    vesselExtractor->SetValue( 0 , 1);   //轮廓
    
    //将提取的等值面拼接成连续的
    vtkSmartPointer<vtkStripper> vesselStripper = vtkStripper::New();                           //建立三角带对象
    vesselStripper->SetInputConnection(vesselExtractor->GetOutputPort());                
    
    
    vtkSmartPointer<vtkPolyDataMapper>  vesselMapper = vtkPolyDataMapper::New();     //建立一个数据映射对象
    vesselMapper->SetInputConnection(vesselStripper->GetOutputPort());                     //将三角带映射为几何数据
    vesselMapper->SetScalarRange(0,7);
    
    //对象和对象属性等设置
    vtkSmartPointer<vtkActor> vessel = vtkActor::New();        
    vessel->SetMapper(vesselMapper);                                                
    vessel->GetProperty()->SetColor(0,0,1);    
    
    // A renderer and render window
    vtkSmartPointer<vtkRenderer> renderer =vtkSmartPointer<vtkRenderer>::New();
    vtkSmartPointer<vtkRenderWindow> renderWindow =vtkSmartPointer<vtkRenderWindow>::New();
    renderWindow->AddRenderer(renderer);
    renderWindow->SetSize(1000, 1000);    
    renderer->AddActor(vessel);
    
    // An interactor
    vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
    vtkSmartPointer<vtkRenderWindowInteractor>::New();
    renderWindowInteractor->SetRenderWindow(renderWindow);
    renderWindow->Render();
    renderWindow->SetWindowName(“啦啦啦，我是卖报的小行家”);//这一句一定是在render()后面，否则无效，为什么没人告诉我
    renderWindowInteractor->Initialize();
    renderWindow->Render();
    renderWindowInteractor->Start();
    return 0;
}

 

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