I am trying to understand, how stereoscopic pairs are created. On the internet I found a lot of information about that, but I don´t know which techniques are still actual.
On what I found, I think there are some different aproaches:
The scene is rotated or shifted to generate the left and right eye view. You have only one camera.
Something about two projection centers. I don´t realy understand.
As you can see here: http://local.wasp.uwa.edu.au/~pbourke/miscellaneous/stereographics/stereorender/
You use two cameras, that are viewing the same scene from two different positions.
I think number 3 is the technique which is used nowadays, right? The webpage linked at number 3 says something about a method called “off-axis”. In other sources I found number 2 is called like this. Is it the same?