[vtkusers] How to transform the selected area by vtkBorderWidget to vtkExtractVOI

[Liu_tj]

Hi,


My requirement is using a rectangle to select an area on the DICOM iamge and generate 3D model for the selected area. At present what I know is using vtkBorderWidget for selection and vtkExtractVOI to get the vtkImageData of the selected area. However, vtkExtractVOI::SetVOI() uses the min and max extents as the input. So, my question is: how to transform the selected area by vtkBorderWidget to the extent number used by vtkExtractVOI?


Thanks
Liu Peng

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