[vtkusers] i need your help, about surface cuts image

[guoyanmin]

Hallo everyone, 
i need your help,

I make now one combination 
between one Surface and one Image, that means i want to add one surface into the image  and  cut off this area from the image to store, this area is overlain between surface and image. 
Ich write so that:
 
  
vtkLinearTransform 
*transform = 
surface->GetTimeSlicedGeometry()->GetGeometry3D(0)->GetVtkTransform();
    vtkPolyData * polydata = 
surface->GetVtkPolyData(0);
  vtkTransformPolyDataFilter 
* transformFilter=vtkTransformPolyDataFilter::New();
  transformFilter->SetInput(polydata);
  transformFilter->SetTransform(transform);
  transformFilter->Update();
 
    vtkPolyDataToImageStencil * 
dataToStencil = vtkPolyDataToImageStencil::New();
    
dataToStencil->SetInput( 
transformFilter->GetOutput());
  
vtkImageStencil * stencil = 
vtkImageStencil::New();
  
stencil->SetStencil(dataToStencil->GetOutput());
  
stencil->SetBackgroundValue( 
0 );
  stencil->ReverseStencilOff();
 
  
vtkImageData *vtkimage = 
image->GetVtkImageData();
  
stencil->SetInput( 
vtkimage );
  
stencil->Update();
  
vtkimage = 
stencil->GetOutput();
  
mitk::Image::Pointer 
m_img;
  
m_img = 
mitk::Image::New();
  
m_img->Initialize(vtkimage);
  
m_img->SetVolume( 
vtkimage->GetScalarPointer() );
 
I can get one cut part of image(m_img), and i can store it in the computer, but if i load this image,it appears not in the right position in the original image. it appears only in the position, where i load the surface. 

somebody  knows ? please me some idea. i want to show this cut image in the right position.



 
Guo,Yanmin
Darmstadt  Deutschland
Phone(handy):0179-4820889
 
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