Save vtkImageData to BMP Image 保存vtkImageData为图片

#include <vtkBMPReader.h>
#include <vtkBMPWriter.h>

vtkBMPReader * reader = vtkBMPReader::New();
reader->SetFileName(filename);
reader->Update();
m_PreBMPViewer.SetInput(reader->GetOutput());
m_PreBMPViewer.Render();

vtkImageData *imgData = reader->GetOutput();

vtkBMPWriter *writer=vtkBMPWriter::New(); 
writer->SetInputConnection(reader->GetOutputPort());
writer->SetFileName("img.bmp");
writer->Write();