Stereoscopic video systems; Multi-view video systems; Details thereof

stereoscopic providing (exactly) two different views, one for the left eye and one for the right eye 2D two-dimensional 3D three-dimensional, sometimes also used to mean stereoscopic. autostereoscopic display autostereoscopic displays a display device not requiring glasses to provide a stereoscopic effect to the viewer. An autostereoscopic display uses a parallax generating optic which projects or displays different images to the viewer, thus creating a sense of depth. The parallax-generating optic may include, for example parallax barriers; lenticular lenses; an array of controllable light sources or a moving aperture or light source; fly-eye lenses; dual and multilayer devices that are driven by algorithms to implement compressive light field displays; such devices are also called Content-Adaptive Parallax Barriers; varifocal lenses or mirrors. It is noted that volumetric displays are classified in and holographic displays are classified in , whereas autostereoscopic displays are classified in . multi-view providing three or more different views to one or more viewers according to their viewing position or direction; the views can be two-dimensional [2D] or three-dimensional [3D]. automultiscopic display automultiscopic displays This is a shorter synonym for the expression "multi-view autostereoscopic three-dimensional [3D] display”. volumetric display volumetric displays a device generating a "solid" image, i.e. not an image on the surface of a display, but one having a real depth, for example by projecting 2D image slices at different planes within a viewing volume. Such systems have been considered to fall within the definition of stereoscopic systems because the viewer's eyes perceive two different pictures. lenticular lens lenticular lenses an array of thin cylindrical lenslets (normally less than 1mm wide) placed vertically in front of, or behind, a display or light modulator in order to generate optically directive views in autostereoscopic displays or cameras. parallax barrier parallax barriers an array of opaque strips and thin slits arranged to occlude portions of a displayed image in left and right viewing regions. The slits are spatially arranged to ensure that the left/right image portions are only visible in the corresponding left/right viewing regions for which they are intended. The parallax barrier may be provided by a static physical layer in which the slits are precisely positioned, or electronically generated on an adaptive intermediate LCD layer. The parallax barrier may also be adjacent to camera circuitry for image collection. fly-eye lens fly-eye lenses an array of very small bidimensional lenses (typically circular / hemispherical) placed in front of a display, light modulator or image sensor like a normal lenticular lens, providing bidimensional parallax. pseudo-stereoscopic relating to stereoscopic or three-dimensional [3D] visual effects obtained without sending different views to the viewer's eyes. The same term is sometimes used to denote the effect whereby the left and right images are seen by the wrong eyes, due to viewing from an unsuitable position in front of an auto-stereoscopic display. integral imaging a technique of image capture or display which uses a fly's eye or a lenticular lens in front of the image sensor/display in order to capture/display images with parallax. plenoptic camera plenoptic cameras a camera, normally non-stereoscopic, using a technique allowing focusing after image capture, by means of a lenticular lens array combined with a plurality of (small) image sensors. A plenoptic camera is also known as a light-field camera.