[vtkusers] MIP Projection on a 3D Plane

[Jose Ignacio Prieto]

John, what I am trying to do is to make a MIP projection to a plane (so it
would look like a real xray photograph instead of a volume), not to the
camera. And then put that plane as an actor next to the volume isosurface.
I attach a primitive scheme. Sometimes I think of it like a renderer inside
a renderer. What can I do?
Thanks


On Mon, Apr 15, 2013 at 10:31 AM, Jon Haitz Legarreta <
jhlegarreta at vicomtech.org> wrote:

> Hi Jose Ignacio,
> although I have not compiled and run the Medical1 example myself, some
> general rules that may help you are the following.
>
> Each object has its own mapper. If you have all objects int eh samen
> window, you are sharing the renderwindow, which has its renderer and its
> the interactor.
>
> When you modify a property such as the zoom or the angle, the
> rendererwindow should be updated; a way to do (force) it is to call the
> renderwindow's Render() method.
>
> If you have multiple windows or scenes, each scene may be a renderwindow
> and you should take care of synchronizing the events.
>
> HTH,
> JON HAITZ
>
>
>
> On 15 April 2013 15:03, Jose Ignacio Prieto <joseignacio.prieto at gmail.com>wrote:
>
>> Hi Jon, I wan to modify Medical1 example, so I still have the skin
>> contour in the center of the screen and have an MIP projection of the
>> volume in a 2D plane to the right of the contour, so you can see both
>> things at the same time. I want the projection to update itself if I
>> change the zoom,  view angle or contrast. It would be similar as the
>> software 3dSlicer, where you have a volume in one window and the
>> projection in another. I don't know if this is one mapper and two
>> actors, of they just share the data source and the mouse interaction
>> is deliberately done in both windows. Thanks
>>
>> On Fri, Apr 12, 2013 at 6:36 PM, Jon Haitz Legarreta
>> <jhlegarreta at vicomtech.org> wrote:
>> > Dear Jose Ignacio,
>> > if I understand well, you mean having a volume render of the heart and
>> > showing an arbitrary 2D plane together, in the same scene. This is
>> > definitely possible.
>> >
>> > You must just have all the necessary input data (your volume and have
>> your
>> > 2D cut computed) and then add the necessary actors to the scene.
>> >
>> > If you need more precise answers or directions, you may want to give
>> further
>> > details.
>> >
>> > HTH,
>> > JON HAITZ
>> >
>> >
>> > On 12 April 2013 15:13, Jose Ignacio Prieto <
>> joseignacio.prieto at gmail.com>
>> > wrote:
>> >>
>> >> Hi, is this too complicated? Has somebody done anything similar?
>> >> Gracias!
>> >>
>> >> On Thu, Apr 11, 2013 at 10:17 AM, Jose Ignacio Prieto
>> >> <joseignacio.prieto at gmail.com> wrote:
>> >> > Hi all,
>> >> > I am starting with VTK, ran some examples and now I am trying to
>> >> > display a volume (like an isosurface of a heart) and next to it, a
>> >> > plane (let's say in an angle of 45 degree to the camera) where you
>> >> > could get the MIP projection of the heart. So when you rotate the
>> >> > isosurface, then the MIP would change as well and it would be
>> "easier"
>> >> > to visualize what are you looking at. I think it is like the shadows
>> >> > example (
>> http://www.vtk.org/Wiki/VTK/Examples/Cxx/Visualization/Shadows)
>> >> > , but instead of a light it would be a projector of "xrays" to a
>> >> > screen. Is it possible to build it?
>> >> > Thanks!
>> >> > Jose
>> >> >
>> >> > --
>> >> > José Ignacio Prieto
>> >> > celular(nuevo): 94348182
>> >>
>> >>
>> >>
>> >> --
>> >> José Ignacio Prieto
>> >> celular(nuevo): 94348182
>> >> _______________________________________________
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>> >
>>
>>
>>
>> --
>> José Ignacio Prieto
>> celular(nuevo): 94348182
>>
>
>


-- 
José Ignacio Prieto
celular(nuevo): 94348182
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