[Vv] Reg: Access to Data

[Simon Rit]

Hi Kumar,

On Tue, Jul 20, 2010 at 10:00 AM, Dr.KUMAR RAJAMANI
<k_rajamani at cb.amrita.edu> wrote:
> Dear All
> I would like to know how exactly the image data is read into VV
> What data-structure is used to store the image data internally ?
The image is a vvImage object which has a member, mVtkImages, which
points to the data in vtk format (vtkImageData*). You can refer to the
vtk doc for more information on that structure. It is read via
vvImageReader, which calls itk::ImageFileReader.

>
> Which Class/method needs to be used to retrieve the data ?
> Is it possible to get the pixel value at a particular (x,y,z) or (x,y,z,t) location ?
Yes. You can use member GetScalarComponentAsDouble of vtkImageData.
Refer to the vtk doc or to the example in vvSlicer.cxx.
Good luck!
Simon

>
> Thanks in advance for your help
>
> Warm Regards
> Kumar
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