【004】 ITK 讀取 CT Dicom 數據並使用 VTK 顯示

【004】 ITK 讀取 CT Dicom 數據並使用 VTK 顯示

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1.CMakeList.txt

cmake_minimum_required(VERSION 3.5)
project(Image2ReadImage LANGUAGES CXX)
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

find_package(ITK REQUIRED)
include(${ITK_USE_FILE})
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(Image2ReadImage main.cpp)
target_link_libraries(Image2ReadImage ${ITK_LIBRARIES} ${VTK_LIBRARIES})

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2.ITK 讀取 CT dicom 文件並使用 VTK 顯示代碼實現

#include "itkImage.h"
#include "itkImageFileReader.h"

#include "vtkSmartPointer.h"
#include "itkImageToVTKImageFilter.h"
#include "vtkImageViewer2.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderWindow.h"
#include "vtkRenderer.h"

int main()
{
    using PixelType = unsigned int;
    using ImageType = itk::Image<PixelType,3>;
    using ImageReader = itk::ImageFileReader<ImageType>;
    ImageReader::Pointer reader = ImageReader::New();
    // 此處是我 CT Dicom 文件的路徑，請根據實際情況修改
    reader->SetFileName("D:\\AnnjeffCode\\QtCreator\\ITK-Examples\\image000.dcm");
    reader->Update();
    ImageType::Pointer image = reader->GetOutput();
	// 到此處，使用 ITK 讀取 dicom 文件已經結束
	
	// 此處開始使用 VTK 顯示讀取的 CT 圖像
    using ConnectorType = itk::ImageToVTKImageFilter<ImageType>;  //VTK和ITK鏈接器
    ConnectorType::Pointer connector = ConnectorType::New();
    connector->SetInput(image);
    connector->Update();

    vtkSmartPointer<vtkRenderWindowInteractor> interactor = vtkRenderWindowInteractor::New();
    vtkSmartPointer<vtkImageViewer2> viewer = vtkSmartPointer<vtkImageViewer2>::New();
    viewer->SetInputData(connector->GetOutput());
    viewer->SetupInteractor(interactor);
    viewer->SetSize(800,600);
    viewer->SetColorWindow(255); //設置窗寬
    viewer->SetColorLevel(500);   //設置窗位
    viewer->SetSliceOrientationToXY();
    viewer->SetSlice(1);
    viewer->GetRenderer()->SetBackground(1,1,1);
    viewer->GetRenderWindow()->SetWindowName("ImageViewer2D");
    viewer->Render();
    interactor->Initialize();
    interactor->Start();

    return 0;
}