Hi Yuv,

  yep, it actually goes to a shifted sphere first. Am tidying the
  mathmap implementation and will post a message when it is ready,

  Peter.

From: Yuval Levy <goo...@levy.ch>
Subject: [hugin-ptx] Re: Generalised stereographic projections
Date: Tue, 03 Mar 2009 22:12:42 -0500

> 
> Hi Peter,
> 
> sorry I am getting in late on this thread - got plenty of backlog to 
> process in my in-box.
> 
> Peter Gawthrop wrote:
> >   I have been playing with generalisations of the stereographic
> >   projection. Given a "view sphere" of a 360 panorama, the basic idea
> >   is the float around inside that sphere and then project on to either
> >   a plane or a cylinder.
> 
> and how about a sphere again?
> 
> 
> > Conventional perspective comes from
> >   projecting from the centre of the sphere, and stereographic from the
> >   back, onto a plane. This projection allows projection from anywhere
> >   in the sphere in any (meaningful) direction.
> > 
> >   First tries at using this at 
> > 
> >   http://www.flickr.com/photos/gawthrop/sets/72157614419442162/
> > 
> >   At the moment, it's a mathmap implementation. But I would like to
> >   think about putting it in hugin and/or panini. Note that, unlike the
> >   Panini projection, the aim is to distort - albeit in a meaningful way.
> > 
> >   Comments&suggestions appreciated.
> 
> beautiful, and I think *very* useful too. Is the mathmap implementation 
> available for playing somewhere?
> 
> Yuv
> 
> > 
> 
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