specialized glasses and three-dimensional perception

One method to have the eyes see different pictures on a distant screen is to have eyes view the screen with different polarized filters. This is how "3D glasses" work in movies. The communication of the polarized filters with colors or other characteristics of the picture on the screen changes the pictures, resulting in different perspectives and detail perception, but this technology has significant constraints. Another method to present one's eyes with different pictures is to use "shutter glasses." Shutter glasses alternatively block the picture from first one eye and then the other, timed with images from two different perspectives shown successively on a single screen. When the alternating images are shown in sufficiently quick succession, then the brain put togethers the two images into a single 3D image. Most head mounted displays used in virtual reality are a form of helmet that includes: some type of shutter glasses; a somewhat close high-clarity screen with a picture that spans more than 60 degrees of the range of sight and tracks head motion; and a mechanical, optical, magnetic or other mechanism to track head motion. Further, Home Tour US may be of interest to you.

An object's surfaces are in the spaces within its outline. Besides the interaction among things and the geometry of object edges discussed, the texture and lighting of the exteriors of an object also provide important cues for three-dimensional perception. One of the most important aspects of three-dimensional perception of textures is their interaction with light. We are all used to watching things illuminated from overhead by the sun and thus most readily interpret the three-dimensionality of things lit from above by a single light source. Nonetheless, light from several light sources or from directions apart from above can also convey three-dimensionality if done consistently. For additional coverage about VR, see Virtual Tours Cottage Grove, Minnesota .

The site on Virtual Reality covers more information along these lines.