[vtkusers] help

[陆阳]

hello,sorry to interupt you .
but i have a really important question.i am asking you for help.
i am a new learner of vtk.
recently,i am using vtk to do 3d reconstruction.
i am using mip(maximum intenstity projection ) to do this.
first reading some silces of ct dicom image,then do the projection.
as you know vtk is using pipeline ,we can only get 3d volume.
but what i want is the 2d image by MIP.
i dont know if i make myself understood by you? my english is poor.
here is the main code:
//read the dicoms
vtkDICOMImageReader *volumeReader = vtkDICOMImageReader::New();
volumeReader->SetDirectoryName("C:/mrdata");
vtkImageShiftScale *scale=vtkImageShiftScale::New();

scale->SetInput(volumeReader->GetOutput());
scale->SetOutputScalarTypeToUnsignedChar();
scale->Update();

vtkVolumeRayCastMIPFunction *MIP = vtkVolumeRayCastMIPFunction::New();
vtkVolumeRayCastMapper *RaycastMapper = vtkVolumeRayCastMapper::New();
RaycastMapper->SetVolumeRayCastFunction(MIP);
    RaycastMapper->SetInput(scale->GetOutput());

here is the case, where i can get the 2d image i want?
i couldnot find any interface.but i think the image should be the output of
 RaycastMapper?
the pity is i cant find any output of RaycastMapper.
could you give me some suggestions?

-- 
陆阳
清华大学医学院生物医学工程系
Yang Lu
Department of Biomedical Engineering,
School of Medicine, Tsinghua University
电话/Tel：+86-010-51532315
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