[vtkusers] Fwd: Interactor for 2D Images

[masabumi ishihara]

Hi Andi,

Thank you for your information.
I tried to use VTK as you recommended, the results are as follows;

(1) vtkImageActor and vtkInteractorStyleImage
     Window/Level were not changed with any combination of special
key and mouse.

(2) vtkImageShiftScale
    There is no description about Window/Level in the VTK Class Reference.

(3) vtkImageViewer2
    I know this class can calculate Window/Level, but this viewer can
have only one renderer.
   Our requirement is to render more than one images on the one viewer.

(4) vtkImageMapper
    I know this Mapper can set Window/Level.
   But we can't use vtkImageActor but vtkActor2D, if we use vtkImageMapper.

Then, we have not had the best combination to meet our requirement, yet.
If you have any idea, please let us know.

Thanks,

Maty

2008/10/20 Andreas Brüning <mail-andi at web.de>:
>
> There are different ways to calculate the Window/Level. It depends from your vtk pipeline and which vtk-classes do you use to display the images.
> The following classes can calculate Window/Level:  vtkImageShiftScale, vtkImageViewer2 and vtkImageMapper. I am not sure but also the  vtkInteractorStyleImage  class gives you the ability to change the Window/Level with a special mouse + key combination.
> Kiteware provides some examples how to calculate Window/Level with these classes.
>
> Hope it helps
> Andi
>
>
>
> Hi Andi,
>
> Thank you for your reply.
> I immediately tried and am sure that the results completely meet our
> requirement.
> Thank you very mudh!
>
> BTW, we have one more question.
> There is one more requirement, that is to change wiondow level and window width.
> Please tell us how to do it.
>
> Thanks,
>
> Maty
>
> 2008/10/20 Andreas Brüning <mail-andi at web.de>:
>> Hi,
>>
>> take a look at the vtkInteractorStyleImage class. I think this is what you want.
>>
>> Andi
>>
>>
>>
>>
>> Hi VTK Users,
>>
>> I am a newbie for VTK.
>> This time, we are planning to use VTK for 2D Image rendering.
>> But, vtkRenderWindowInteractor is made for 3D interaction,
>> so the reaction is always 3D motion.
>> Then, we are looking for the regression interactor for 2D Images.
>> If you have the interactor to meet our requirement, please let us know.
>> If you don't, we would appriciate it if you let us know how to handle
>> the 2D interaction,
>> e.g. zooming, moving and rotation.
>>
>> Thanks,
>>
>> Maty
>
>
>
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