[vtkusers] [Insight-users] Picking Pixel Error

[Luis Ibanez]

Hi Xiaopeng,


1) Does your input image has orientation
    different from identity ?

    The vtkImageData class does not manage
    orientation different from identiy.

2) For an illustration of the proper use of
    picking, please look at the following code
    in IGSTK:

           IGSTK/Source/igstkView.cxx

http://public.kitware.com/cgi-bin/viewcvs.cgi/Source/igstkView.cxx?root=IGSTK&view=markup

Please note that the correct way of managing
coordinates is to refer them to the physical
coordinate system of the input image.


     Regards,


            Luis



------------------------------------------------------------
On Mon, Oct 11, 2010 at 9:19 AM, Xiaopeng Yang <yxp233 at postech.ac.kr> wrote:

>  Dear users and developers,
>
>
>
> Greetings!
>
>
>
> I modified the “PickPixel” example so that a CT image can be loaded through
> ITK and then passed to VTK. After that the picking pixel function is applied
> to that image to obtain position of a pixel so that the position value can
> be input to a segmentation algorithm as seed point. However, I got wrong
> position values. The same thing happened to the intensity value of that
> pixel.
>
>
>
> Could you please tell me what happened? Attached please find my code.
>
>
>
> Thanks very much.
>
>
>
>
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