2.2 Method

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2.2 Method

**Figure 1:** An Indycam.
$\includegraphics{indycam.ps}$

The cameras used for the experiment were two of the webcams that SGI shipped with its Indy range of workstations (dubbed Indycams, Figure 1).

**Figure 2:** An O2-cam.
$\includegraphics{o2cam.ps}$

These were preferable those that come with the $\textrm{O}_{2}$ workstations (dubbed $\textrm{O}_{2}$ cams, Figure 2) for simple logistical reasons -- it's very easy to strap two of the Indy cameras together (``back to back''), with the lenses being separated by a good approximation to a typical human eye separation (Figure 3).⁵

**Figure 3:** A stereocam formed by two Indycams (Figure 1) strapped back to back.
$\includegraphics{stereocam3.ps}$

The most important detail here is that the cameras are laying on their sides; the images obtained from each need to be rotated $90^{\textrm{o}}$ clockwise and counter-clockwise as appropriate.

Kevin Pulo
2000-08-22