Logictechtoy Usb Camera Driver

5.b. Datasheets

design above can perhaps a better description, at intutitivo the effect that we want to create a stereoscope. For a more accurate analysis is necessary to better analyze the schematic below.


OsFOd Using similar triangles, and FsFFd, taking into account that the length of the segments must always be positive, we get:

that resolved zobs highlighting the distance between point and observer from the following expression

that resolved zobs highlighting the distance between point and observer, by the following expression


where:
z obs = distance between the observer and point of fixing perceived F, which coincides with the Z coordinate of the point itself
zs = distance between the observer and the images placed on the plane S
xs, xd = x-axis projected points Fs, d
b = distance between the centers of the optical axes of rotation, not differ significantly from the interpupillary distance. The perceived distance of the point zobs apparent from the observer is proportional to the distance between the observer zs and images, is roughly inversely proportional to the distance between the projected points xs-xd more complex and depends on the distance interpupillary b.

latter depends on the observer. In an adult male varies from 5.77 cm to 6.96 cm, with a 6:32 cm and an average percentage change of around 20%.
Children are naturally lower. The distance between projected points, xs-xd, is created on purpose to create the desired effect of depth. It 'the only parameter in principle controllable by those who produce the images. The distance xs-xd not be larger than the interpupillary distance otherwise the eyes would be forced to diverge in an unnatural way. In formulas, you must meet the following inequality: xd - xs ≤ b
In our stereoscope the projected points are coincident, the apparent object is then received in exactly close hole. The model confirms the experience, because, with

xs-xd = 0, we obtain:
zobs zs = zs
The distance between the observer and the actual images can be controlled only in part, why the stereoscope does not come into contact with user is served by the face, he must in fact be able to approach or move away from the instrument to obtain an optimal view.

paragraph summarizes, expands and adapts to our research, part of the thesis in information engineering "Geometry of vision, problems of recovery and display of stereoscopic sequences," conducted by Giuseppe Colace at the RAI Research Centre. Rapporteur Eng. Gianfranco Barbieri, co-rapporteur ing. Mario Muratori.