[vtkusers] how to change image order

[David Gobbi]

On Mon, Dec 21, 2009 at 10:31 AM, John Drescher <drescherjm at gmail.com> wrote:
>> sorry but I don't see how vtkImageFlip could help me to, for example:
>> I have a vtkImageData obtained from vtkGDCMImageReader, the images are
>> sorted by the dicom instance number tag, then, I need to change the
>> sort order key to for example, acquisition time tag and then display
>> the images with this new order.
>>
>
> Normally the with dicom CT images difference is just flipping the
> image. However I can imagine cases where that will not work.
>
> John

I've had exactly the same issue with DICOM (not specifically the
GDCMReader though).  There is no filter to reorganize the vtkImageData
slices with strides and such.  I had to read in the data
slice-by-slice (i.e. a different reader for each slice) and use
vtkImageAppend to put it together in the right order.

  David