摘要:
Improvements in the production means for dodecahedral imaging are described, to define a simple, flexible and efficient strategy for the creation of extremely wide images. Improvements in production technology include lenses and optical mounts that enable automatic alignment of film and video cameras and other imaging devices to cover multiple fields of view equal to one, two or three dodecahedral pentagons. Three double-pentagon formats, X, P and O, are described in detail, the X format producing an even hemispherical division and a full spherical view, and the P format producing simplified coverage of most of a sphere and ease of use for stereoscopic effects, and the O based on the combination of the dodecahedron and the octahedron. A triple-pentagon T format based on the use of the tetrahedron is also described, along with crisscross optics and temporal offset mounts to minimize parallax differences between the separate camera views. Standard cropping mattes for dodecahedral images are given, and compressed storage methods are suggested for a more efficient distribution of dodecahedral images in a variety of media.
摘要:
A method and apparatus for providing, in response to successive image signals and a control signal, the successive images at various apparent distances. The relationship between accommodation and convergence may be preserved. The images may have a highly detailed component which has its image content changed according to changes in the direction of a monitored one or more visual axes. The images may be provided stereoscopically.
摘要:
Rate control in a stereoscopic digital video communication system is accomplished by modifying the quantization level of P or B-frame data in the enhancement layer depending on whether the frame is temporally predicted (from the same layer) or disparity predicted (from the opposite layer). The invention can maintain a consistent image quality by providing additional quantization bits for disparity-predicted P-pictures, for example, where a P-frame may be encoded from a B-frame in the enhancement layer. The selected quantization level corresponds to an overall bit rate requirement of the enhancement layer. For disparity predicted P-frames, the quantization step size is modified according to the activity level of the frame being encoded in the enhancement layer, or of the reference frame, whichever is greater. Also, image quality is improved and frame freeze up is prevented during editing modes such as fast forward and fast rewind which require random access to the picture data. When the reference frame in the base layer is the first frame of a group of pictures (GOP), the corresponding enhancement layer frame will be encoded as an I or P frame instead of as a B frame to improve image quality and eliminate or reduce error propagation during random access.
摘要:
A three dimensional display system comprises a display volume selectively partitioned into distinct display regions, a display surface for scattering light beams from the display volume, at least two optical scanners for modulating the light beams and for directing the light beams to the display surface within each distinct display region respectively, and a display controller. The display controller comprises a world coordinate interface for inputting world coordinates, a data processor for transforming the world coordinates into view coordinates and device coordinates, and an optical scanner controller for sensing and controlling the motion of the display surface and for outputting the device coordinates to the optical scanners to generate a three dimensional image within the display volume.
摘要:
An intelligent system and process for producing and displaying stereoscopically-multiplexed images of either real or synthetic 3-D objects, for use in realistic stereoscopic viewing thereof. The system comprises a subsystem for acquiring parameters specifying the viewing process of a viewer positioned relative to a display surface associated with a stereoscopic display subsystem. A computer-based subsystem is provided for producing stereoscopically-multiplexed images of either the real or synthetic 3-D objects, using the acquired parameters. The stereoscopically-multiplexed images are on the display surface, for use in realistic stereoscopic viewing of either the real or synthetic 3-D objects, by the viewer.
摘要:
An imaging system includes left and right display panels arranged so as to be viewed separately by left and right eyes of a viewer. A three dimensional video signal is supplied to a drive circuit for the display panels such that image data from the three dimensional video signal is supplied alternately to the left and right display panels. The display panels are of a memory effect LCD type such that, when no image data is received by the display panel, the image data of the previously received field is maintained on display for providing flickerless imaging.
摘要:
The transform arithmetic operations by spatial image transform matrixes and perspective transform matrixes to a screen surface thereon are executed on source video signal representing two-dimensional image so as to generate left-eye and right-eye video signals. It is possible to realize the stereoscopic image generation apparatus capable of setting the visual difference between a left eye and a right eye easily.
摘要:
A method for transforming world coordinates into device coordinates comprises the steps of inputting a set of world coordinates to be displayed, scaling the world coordinates into view coordinates bounded by a display volume, finding a control memory location of a light beam deflector corresponding to a Y-axis position for each of the view coordinates, calculating X-axis and Z-axis device coordinates from the view coordinates for deflecting a light beam to a selected point within the display volume corresponding to each of the view coordinates, and loading the device coordinates into the control memory locations corresponding to the Y-axis position for each of the view coordinates to cause the light beam to be deflected to each selected point.
摘要:
The invention relates to a device for display an autostereoscopic image on a video screen (20) having a cylindrical lens array (10) disposed in front of it.The video screen (20) has pixels made up of p color points (RGB) placed horizontally side by side, the number of viewpoints for the autostereoscopic image is different from p.times.n (where n is a non-zero integer), and the lens.sub.-- array (10) has a pitch equal to the product of the pitch of the color points (R, G, B) multiplied by the number of viewpoints, e.g. four.
摘要:
A system stream contiguous reproduction apparatus to which are input one or more system streams interleaving at least moving picture data and audio data, and system stream connection information includes a system clock STC generator for producing the system clock that is used as the system stream reproduction reference clock. The system stream contiguous reproduction apparatus further includes one or more signal processing decoders that operate referenced to the system clock STC, decoder buffers for temporarily storing the system stream data transferred to the corresponding signal processing decoders, and STC selectors for selecting a system clock STC referenced by the signal processing decoders when decoding the first system stream, and another system clock STC referenced by the signal processing decoders when decoding a second system stream reproduced contiguously to the first system stream.