About estereo pano whith canon 5.2mm dual fisheye

[Ejea TB Producciones Audiovisuales]

Hello to the whole community, I have been using PTGUI for a long time, but I had never entered this forum, greetings to all. Has anyone tried stitching panoramas made with the Canon R5 C and canon 5.2mm dual fisheye?

Jose

[Erik Krause]

Am 18.02.2023 um 14:49 schrieb Ejea TB Producciones Audiovisuales:

> Has anyone tried stitching panoramas made with the Canon R5 C and
> canon 5.2mm dual fisheye?

This is a VR-only lens, the images and videos you get must be viewed
with a VR headset.

It's pretty pointless for panoramas. In landscape orientation, you can
rotate only one lens around it's no-parallax-point (NPP) at a time,
which makes the other lens useless. This way, most of the sensor pixels
are lost, so the resolution is quite low even compared to a standard
circular fisheye.

It might be possible to shoot stereo panoramas with it, but even for
that it's no good choice. With a longer focal length fisheye you get
higher resolution, and you can shoot stereo panoramas with a single lens
as well, using proper displacement and the mask technique. In all cases
you need to shoot at small angular increments, to get a good stereo
effect all around. So you need lots of images, you'll get lots of
stitching errors due to parallax and far smaller than necessary resolution.

Maybe there is a possibility, though: If used in camera portrait
orientation, you can rotate around both NPPs at once, getting two
panoramas one above each other with slightly different angle. Perhaps
that could be used to get depth information from the parallax between
the two panoramas. However, I'm not too confident: The Spheron forensic
system uses 1 meter displacement between two panoramas to do a 3D
reconstruction of a room.

--
Erik Krause
http://www.erik-krause.de