[Paraview] set paraview camera to a real camera intrinsic matrix

[Nikhil Shetty]

Hi Li,

Looks like you may want to set the projection matrix with the intrinsic
values. The pv / vtkCamera does not provide an API to do that but there is
nothing stopping you from exposing it in your copy of the source.

-Nikhil.

On Fri, Apr 20, 2012 at 12:31 PM, Li Guan <li.9uan at gmail.com> wrote:

> Dear all,
>
> I am trying to augment an image from a real camera to a VR world.
> I came into a problem try to configure the paraview camera to the real
> camera.
>
> I know that setting camera position, view-up direction and focal point,
> will give me the correct extrinsics of the camera (i.e. orientation and
> displacement of the camera in the world coordinate system), but I am now
> stuck at setting the intrinsics: for example my camera center is not at the
> image center, therefore, by just setting up the extrinsics does not give me
> the correct rendering view I need.
>
> Is there a standard way to set up the camera so that I get correct
> intrinsics?
>
> Let's say we have K R t for my real camera, the image resolution is
> [640,480]:
>
> K = [1500       0 310
>              0 1400 230
>              0      0     1]
>
> R = [1 0 0
>        0 1 0
>        0 0 1]
>
> t = [0 0 0]';
>
> Many thanks!
>
> Li
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