[vtkusers] MIP Projection on a 3D Plane

[David Gobbi]

Hi José,

If you are using VTK 5.10, you can try the vtkImageResliceMapper:
http://www.vtk.org/Wiki/VTK/Image_Rendering_Classes
It can do thick-slab rendering, with SetSlabThickness() and
SetSlabModeToMin()/SetSlabModeToMean().

 - David

On Tue, Apr 23, 2013 at 7:41 AM, Jose Ignacio Prieto
<joseignacio.prieto at gmail.com> wrote:
> 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