[IGSTK-Users] Augmented reality

[Patrick Cheng]

Hi Alvaro,

Sorry for the late reply. Your email probably fall through our eyes as 
we were busy preparing for the latest release.

I think what you are doing is feasible. My question is why do you want 
to use multiple renderers?

If you want to overlay object with a 2D video, you can use perspective 
transform to project the object on to the image 
(igstkPerspectiveTransform). It will be better to use a single renderer 
so that you have the same camera and coordinate system.

Also notice that in the IGSTK coordinate system frame work, we consider 
View as a node in the scene graph tree. That assumes we only have one 
renderer in the View (one coordinate system and one camera position). 
Take these into consideration if you want to modify View to accommodate 
multiple renderers.

Patrick

Alvaro Gómez wrote:
> Some time ago I posted this message:
> http://public.kitware.com/pipermail/igstk-users/2009-June/000677.html
> 
> I would like to know if the approach described in the message is 
> correct. If there is a better way to mix video and spatial objects, 
> please let us know how to do it.
> 
> Thanks,
> Alvaro
> 
> 
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