[vtkusers] how to change image order

[Lic. José M. Rodriguez Bacallao]

I don't use itk readers because if I do so, I will need to manage the
pixel type myself.

On 12/21/09, John Drescher <drescherjm at gmail.com> wrote:
> On Mon, Dec 21, 2009 at 12:36 PM, David Gobbi <david.gobbi at gmail.com> wrote:
>> 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.
>>
>
> I believe you can also rearrange the order with the itk dicom series
> reader. I mean after enumerating the series you can either use the
> several defined sorting orders or manipulate the list of images
> yourself. I use the sort order for one project and use instance number
> instead of position.
>
> John
>


-- 
Lic. José M. Rodriguez Bacallao
Centro de Biofisica Medica
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