volume 12 1996 PDF

Type or paste a DOI name into the text box. This article includes a list of references, but its sources remain unclear because it has insufficient inline citations. A volumetric display device is a graphic display device that forms a visual representation of an object in three physical dimensions, as opposed to the planar image of traditional screens that volume 12 1996 PDF depth through a number of different visual effects. 3D imagery visible to the unaided eye.

Volumetric 3D displays embody just one family of 3D displays in general. Although first postulated in 1912, and a staple of science fiction, volumetric displays are still under development, and have yet to reach the general population. With a variety of systems proposed and in use in small quantities—mostly in academia and various research labs—volumetric displays remain accessible only to academics, corporations, and the military. Many different attempts have been made to produce volumetric imaging devices. There is no officially accepted « taxonomy » of the variety of volumetric displays, an issue which is complicated by the many permutations of their characteristics.

3D displays rely on the human persistence of vision to fuse a series of slices of the 3D object into a single 3D image. A variety of swept-volume displays have been created. For example, the 3D scene is computationally decomposed into a series of « slices », which can be rectangular, disc-shaped, or helically cross-sectioned, whereupon they are projected onto or from a display surface undergoing motion. Due to the persistence of vision, humans perceive a continuous volume of light. Another type of 3D display that is a candidate member of the class of swept-volume 3D displays is the varifocal mirror architecture.

One of the first references to this type of system is from 1966, in which a vibrating mirrored drumhead reflects a series of patterns from a high-frame-rate 2D image source, such as a vector display, to a corresponding set of depth surfaces. LED and these are illuminated under microprocessor control to produce the image. So-called « static-volume » volumetric 3D displays create imagery without any macroscopic moving parts in the image volume. It is unclear whether the rest of the system must remain stationary for membership in this display class to be viable. This is probably the most « direct » form of volumetric display.