PanoTools NG:
Re: Equirectangular from sphere photos
der@... 2016-Jun-08 18:36:47
Hi Philo
Are you referring to a spherical mirror, or do you want to photograph the surface of a sphere?
Case 1 is identical to the fisheye-equisolid type (2*f*sin(theta/2)-mapping) plus left-right mirror. This mapping was included in the original panotools plugins.
Case 2 is a sin(theta)-mapping, which is neither identical to the usual fisheye-equidistance mapping (f*theta) nor to the above mentioned equisolid (sin(theta/2)) mapping. You could use the fisheye equisolid type assuming 360degree field of view, and convert the image to a 360degree equidistance image. Then use this as 180 degree source image (again equidistance) for conversion to equirectangular format.
As sachagriffin has mentioned, you need to photograph with long focal length, and you will have depth of field problems.
Regards
Helmut Dersch
---In #removed#, <philohome2@...> wrote :
Hi all,
Is there a simple process to create an equirectangular image from photos
of a sphere?
Thanks in advance,
Philo