PanoTools NG:
Re: Use of (central) cylindrical projection?
dmgalpha 2007-Mar-07 11:14:47
--- In #removed#, Bruno Postle <bruno@...> wrote:
>
> On Wed 07-Mar-2007 at 07:12 -0000, dmgalpha wrote:
> >
> >Can anybody think of a good reason why central cylindrical should be
> >used instead of equirectangular?
>
> It's the 'correct' projection if you intend to line the walls of a
> circular room with a single panorama.
>
> It is also one of the native formats for QTVR.
>
Thanks Bruno, Roger and Ian for your quick answers. They are very useful.
> >Also, how about sinusoidal? It is almost a year since it was added to
> >panotools, but I don't see it being used.
>
> It is an efficient way of storing/transmitting spherical images as
> the angular resolution is the same throughout (unlike cubic or
> equirectangular).
This sounds like an advantage of any equal area projection (including
the lamberts). Perhaps the Lambert Cylindrical would be even a better
option, as it uses the entire rectangle that bounds it (as opposed to
the sinusoidal).
dmg
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