[ptx] HFOV, focal distance...

[Bruno Postle]

On Fri 03-Jun-2005 at 10:55 +0100, Bruno Postle wrote:
> On Fri 03-Jun-2005 at 10:51 +0200, Lars Schimmer wrote:
> > 
> > So, now the question: WHAT are the a,b,c parameters exactely
> > and how did you get those numbers?

> - Taking a single photograph of a rectangular object, selecting lots
>   of horizontal and vertical control points, then optimising roll,
>   pitch, yaw, fov, a, b & c.

    You need to set the output format to rectilinear for this
    technique to work.  Similar to this tutorial:

      http://hugin.sourceforge.net/tutorials/architectural/

> - Taking two or more overlapping photographs and selecting lots of
>   normal control points, then optimising roll, pitch, yaw, fov, a, b
>   & c.

    This works with any output format.  Basically just follow this
    tutorial:

      http://hugin.sourceforge.net/tutorials/two-photos/

>   To get a really accurate measure of the fov (field of view), you
>   have to take a full 360 degree panorama.

-- 
Bruno