c++版本itk读取和写入nii/nii.gz数据

读取

// 读取nii数据
template<typename image_type, typename image_pointer>
void readData(const std::string& file_path, image_pointer& out_image) {
    
    
    using imageIOType = itk::NiftiImageIO;
    using readerType = itk::ImageFileReader<image_type>;

    auto reader = readerType::New();
    auto nifitiIO = imageIOType::New();

    reader->SetImageIO(nifitiIO);
    reader->SetFileName(file_path);
    reader->Update();

    out_image = reader->GetOutput();
}

写入

// 写入nii数据
template<typename image_type, typename image_pointer>
void writeData(const image_pointer& write_image, const std::string& write_path) {
    
    
    using writerType = itk::ImageFileWriter<image_type>;
    auto writer = writerType::New();

    using niiIOType = itk::NiftiImageIO;
    auto niiIO = niiIOType::New();
    writer->SetImageIO(niiIO);

    writer->SetInput(write_image);
    writer->SetFileName(write_path);
    writer->Update();
}