On Thu, May 30, 2013 at 8:47 AM, Torsten Bronger <
[email protected]> wrote:
> Hallöchen!
>
> johannes hanika writes:
>
> > the keystone correction formula uses a perspective correction
> > approach (i.e. image plane x and y shortening is proportional to
> > 1/z in 3d and different for every pixel, much like
> > http://en.wikipedia.org/wiki/Texture_mapping#Perspective_correctness).
>
> How does DT determine z?
>
such that it matches the quad you draw (at least the relative coordinates
of your points match, obviously not absolute values in meters).
j.
>
> Tschö,
> Torsten.
>
> --
> Torsten Bronger Jabber ID: [email protected]
> or http://bronger-jmp.appspot.com
>
>
>
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