Vtk读取并显示保存图像

（1）：Vtk读取并显示图像：三种方法

转载：未知出处

转载：用VTK显示平面图片：http://blog.csdn.net/tonylk/article/details/464881

用到vtkJPEGReader类。

包含的头文件：

#include "vtkActor.h" #include "vtkRenderer.h"

#include "vtkRenderWindow.h"

#include "vtkRenderWindowInteractor.h" #include "vtkImageViewer.h" #include "vtkJPEGReader.h" #include "vtkImageActor.h"

#include "vtkInteractorStyleImage.h" #include "vtkActor2D.h"

方法一：

使用vtkImageMapper和vtkAcotor2D来实现

int main(int argc, char **argv)

{

int extent[6];

vtkJPEGReader *m_reader = vtkJPEGReader::New();

m_reader->SetFileName("C:\\Users\\igst\\Documents\\美图图库\\叶.jpg");

 m_reader->SetDataByteOrderToLittleEndian();

m_reader->SetDataScalarTypeToUnsignedChar();

 m_reader->SetFileDimensionality(3);

vtkImageMapper *mapper=vtkImageMapper::New();

 mapper->SetInput(m_reader->GetOutput());

mapper->SetColorLevel(128); mapper->SetColorWindow(256);

vtkActor2D *actor=vtkActor2D::New();

actor->SetMapper(mapper);

vtkRenderer *m_Renderer = vtkRenderer::New();

vtkRenderWindow *m_RenWin = vtkRenderWindow::New();

 m_RenWin->AddRenderer(m_Renderer);

vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();

iren->SetRenderWindow(m_RenWin);

vtkInteractorStyleImage *interactor = vtkInteractorStyleImage::New();

 iren->SetInteractorStyle(interactor); m_Renderer->AddActor(actor);

m_Renderer->SetBackground(0.1, 0.2, 0.4); m_RenWin->Render();

m_reader->GetDataExtent(extent);//如果把这条命令放在Render()的前面则无效

m_RenWin->SetSize(extent[1],extent[3]);

iren->Initialize();

iren->Start();

return 0;

 }

结果：

方法二：

使用vtkImageActor类，不需要用vktImageMaper

int main(int argc, char **argv)

 {

vtkJPEGReader *m_reader = vtkJPEGReader::New();

m_reader->SetFileName("C:\\Users\\igst\\Documents\\美图图库\\荷叶.jpg");

m_reader->SetDataByteOrderToLittleEndian();

m_reader->SetDataScalarTypeToUnsignedChar();

m_reader->SetFileDimensionality(3);

vtkImageActor *m_Actor = vtkImageActor::New();

m_Actor->SetInput(m_reader->GetOutput()); vtkRenderer *m_Renderer = vtkRenderer::New();

vtkRenderWindow *m_RenWin = vtkRenderWindow::New();

m_RenWin->AddRenderer(m_Renderer);

vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();

iren->SetRenderWindow(m_RenWin);

vtkInteractorStyleImage *interactor = vtkInteractorStyleImage::New();

iren->SetInteractorStyle(interactor); m_Renderer->AddActor(m_Actor);

m_Renderer->SetBackground(0.1, 0.2, 0.4);

m_RenWin->Render();

iren->Initialize();

iren->Start();

return 0;

 } 

方法三：简便快速

使用ImageViewer,需要调节窗宽窗位

ImageViewer将 vtkRenderWindow, vtkRenderer, vtkActor2D and vtkImageMapper集成在了一起，

不需要再对vtkRenderWindow, vtkRenderer, vtkActor2D and vtkImageMapper定义。

 int main() {

   vtkJPEGReader *image=vtkJPEGReader::New();

   image->SetFileName("C:\\Users\\igst\\Documents\\美图图库\\竹林.jpg");

   image->SetDataByteOrderToLittleEndian();

   image->SetDataScalarTypeToUnsignedChar();

   vtkImageViewer *pViewer = vtkImageViewer::New();//显示二维图形

   pViewer->SetColorLevel(128);//设置窗宽窗位，

   pViewer->SetColorWindow(256);

   pViewer->SetInput(image->GetOutput());

   pViewer->Render();

   vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();

   iren->SetRenderWindow(pViewer->GetRenderWindow());

  iren->Initialize();

  iren->Start();

  return 0;

 }

（2）：VTK保存图片

巴特西

Vtk读取并显示保存图像

转载：用VTK显示平面图片：http://blog.csdn.net/tonylk/article/details/464881

最新文章

热门文章