Re: Stereo distortions in stereo panoramas
- Yes you are right, If we have the cameras in vertical configuration then the red and cyan will be up and down not at the sides, even after rotation of the images.
(an easy test, rotate your head with any Stereo Image and you can see how the effect is lost)
And the Stereo images from images with 3D information (distance of each pixel) could work, but the effect will not "volumetric" I think.
I mean, we will see different planes at different distances, not objects with volume.
That's what happens with "Fake3D" movies:
--- In PanoToolsNG@yahoogroups.com, "Aldo Hoeben" <aldo@...> wrote:
> > Yes, but why is so important the orientation of the camera?, you
> > can rotate your head 90 degrees and still viewing in 3D.
> If that is how you want to view your images, then by all means arrange your cameras in a vertical orientation instead of horizontal. But it sounds mighty uncomfortable to me ;-)
> Earthmine uses the two cameras to be able extract actual 3d geometry from the pair of images. To do this with accuracy, the requirement is to know the exact distance between the two cameras, but it is not all that important how the cameras are arranged. If however they would put the cameras side-to-side, one camera would obscure part of the view of the other camera and vice versa. Ofcourse this still happens with the vertical arrangement, but for this application the zenith and nadir are not that interesting.
> Stereo capture and viewing is something altogether different. For that the cameras need to mimick what the eyes do. IE: the two cameras (arranged horizontally) would need to rotate around a single shared point. If you were to use two one-shot systems, you would have the aforementioned problem that the two cameras see eachother when looking to the sides (left camera sees the right camera when looking right). Additionally things will get screwy if you look backwards in the panorama; the left and right "eye" will be swapped. Two one-shots are just not going to work.
> Having said all that, if earthmine would indeed create accurate 3d geometry from their capture, it would be possible - in theory - to create stereo pairs out of that. But that requires A LOT of processing, and even then the result would be a far cry from what Peter has achieved lately with his stereo spinner work.