texture mapping and ray tracing in virtual reality environments

Three-dimensional imaging of things can be achieved through the representation of their surfaces. Surface texture, shading, and reflected lighting provide important cues for 3D sensation. Two-dimensional texture shadings are used for surfaces in the process of "texture mapping." These surfaces can then be shaded and improved with reflected light to further refine detail sensation. Humans are most familiar with things lit from a single light source above, so shading and light reflection based on a light shining from above provides strong cues for depth perception. One of the more challenging ways of illuminating virtual things involves tracing the tracks of individual light rays as they are reflected and refracted from the things. This is known as "ray tracing." SPIN also has additional information.

As applied to virtual reality, intelligence means that connections between people and virtual objects should come near to following the appropriate physical, living, and similar rules of such interactions in the tangible world. This standard is subtler than the criteria that a computer-generated or improved environment be engaging, enveloping, and immediate. Also, it is relatively open-ended. The amount of difficulty in creating intelligent communication between a human and a virtual room is much less than creating sophisticated communication between a human and a virtual cat. Nonetheless, this attribute should be considered. It is not requisite to have connections back and forth in connections between human beings and computing systems. These bi-directional information transfers must also have meaning to the higher-order processing centers of the human brain. Also consider Virtual Tours Anaheim, California for interesting material regarding virtual reality.

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