[Visualpython-users] camera image plane or focal length?

[Chris C. <scc...@gm...>]

Hi,

I've searched around and in the docs and haven't found an answer to this.

I'm thinking of using Vpython to simulate models for 3d reconstruction from
2d views. That is, I will create the 3d shape, and then take several 2d
images of it in order to test reconstruction algorithms.

To do this, I need to know the camera position and orientation, and its
focal length. The first two (position and orientation) are no problem. I
haven't seen anything on the third (focal length). I'm assuming that the
camera position is actually the focal point, so is there a way to determine
(or better, specify) the offset of the image plane from the camera location
(focal point)?

Thanks for any help,

Chris