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| Number | Title | Issue Date |
| 5043922 | Graphics system shadow generation using a depth buffer A shadow generation method and apparatus that employs a depth buffer technique to increase the speed of calculation of visible shadows. The system employs pipelined processors to determine visible objects and shadows generated by those objects for one or ... | 08/27/1991 |
| 5031117 | Prioritization scheme for enhancing the display of ray traced images A method and means are provided for utilizing, in a color imaging environment, such as ray tracing, display adapter hardware which is capable of interpolating color values for pixels lying in an area between previously color imaged pixels. A computer syst... | 07/09/1991 |
| 5025400 | Pseudo-random point sampling techniques in computer graphics A computer database contains visual and other information of an object scene from which a television monitor or film display is created by electronically sampling points of the object scene information in the computer memory. Undesirable effects of aliasi... | 06/18/1991 |
| 5025405 | Method of interpolating pixel values A pipelined interpolator precomputes both integer and fractional portions of the slope of the function to be interpolated. The fractional portions of the starting value of the dependent variable to be incremented and the fractional value of the slope by w... | 06/18/1991 |
| 5001651 | Method and apparatus for interpolating groups of pixels on a scan line A pixel control system and method of controlling the intensity of pixels on a raster video display screen with scan lines grouped in 20 pixel increments across the scan line to display an object. In a first operational sequence for a given polygon that re... | 03/19/1991 |
| 4985854 | Method for rapid generation of photo-realistic imagery A method for providing rapid generation of photo-realistic imagery for use in a display system. The display system includes a memory which contains first and second ortho-rectified data layers. The first data layer includes a digitized photograph of known... | 01/15/1991 |
| 4970666 | Computerized video imaging system for creating a realistic depiction of a simulated object in an actual environment A system and method for producing highly realistic video images which depict the appearance of a simulated structure in an actual environment, and provides for accurate placement of the structure in the environment and matching of the perspective of the s... | 11/13/1990 |
| 4965844 | Method and system for image transformation A method of transforming an input video image data onto a three-dimensional surface is disclosed which comprises the steps of defining the three-dimensional surface, providing mapping data for transforming the input video image data onto the surface, stor... | 10/23/1990 |
| 4943938 | System for displaying shaded image of three-dimensional object A display system comprising: display apparatus; a first apparatus for producing a depth value signal and a normal direction signal for each of those display pixels, included in a two-dimensional graphic obtained when a three-dimensional graphic to be disp... | 07/24/1990 |
| 4928250 | System for deriving radiation images In an algorithm for deriving radiation images, where view independent radiation calculations are precomputed so that they do not need to be repeated for every view of the same environment. To find the form factors for radiosity techniques, a hemi-cube is ... | 05/22/1990 |
| 4912659 | Parallel surface processing system for graphics display A Pipeline and Parallel Processing system for generating Surface Patches for both Wireframe and Solid/Shaded Models in a Raster Graphics Display. The inputs to a Transformation Processor are the parameters for the Rational Bezier Surfaces: a 2-dimensional... | 03/27/1990 |
| 4901064 | Normal vector shading for 3-D graphics display system A system is provided for application of a lighting model to a rasterized stream of pixels. The system typically includes a series of circuits, each for applying a lighting model to a single pixel. Each chip typically includes some memory sources for stori... | 02/13/1990 |
| 4899295 | Video signal processing A video signal processing system changes the shape of a video frame so that it appears to take the form of a three dimensional object. The system also applies shading to the object in response to an imaginary light source. The address data is processed to... | 02/06/1990 |
| 4897806 | Pseudo-random point sampling techniques in computer graphics A computer database contains visual and other information of an object scene from which a television monitor or film display is created by electronically sampling points of the object scene information in the computer memory. Undesirable effects of aliasi... | 01/30/1990 |
| 4890249 | Data compression and decompression for digital radar landmass simulation A unique digital radar landmass simulator (DRLMS) uses different culture data compression techniques and hardware from that used in the conventional DRLMS systems. The application of these techniques to DRLMS results in a system that is small in size and ... | 12/26/1989 |
| 4879668 | Method of displaying internal surfaces of three-dimensional medical images A count is kept of the number of surfaces traversed, in a variety of three-dimensional imaging systems which are particularly advantageous for use in medical applications based upon data generated by magnetic resonance imaging systems and computerized axi... | 11/07/1989 |
| 4876651 | Digital map system A digital mapping display system for an aircraft wherein map data from a mass memory unit is periodically loaded into RAM in the form of a cache memory in accordance with the aircraft trajectory. The cache memory is randomly addressable within the physica... | 10/24/1989 |
| 4866637 | Pipelined lighting model processing system for a graphics workstation's shading function A lighting model processing system for a computer graphics workstation's shading function includes multiple floating point processing stages arranged and operated in pipeline. Each stage is constructed from one or more identical floating point processors.... | 09/12/1989 |
| 4862391 | Shading circuit for shading a plurality of polygons which constitute a solid model, and method of shading the same A shading circuit has a unit for calculating coordinates and intensities of points inside a polygon based on X, Y, and Z coordinates and intensities of vertexes of each of polygons constituting a solid model. This unit includes a preprocessing section for... | 08/29/1989 |
| 4835712 | Methods and apparatus for imaging volume data with shading Method and apparatus for shading an image volume so that surfaces and boundaries may be rendered to subvoxel accuracy. A gradient vector is generated for each voxel of an image volume by calculating the change in opacity across that voxel in relation to i... | 05/30/1989 |
| 4821213 | System for the simultaneous display of two or more internal surfaces within a solid object A dual pipeline architecture for a system for preprocessing image data gathered from such systems as magnetic resonance imaging and computer axial tomography scanners. In one simultaneously operable dual pipeline, normal vectors are computed for each voxe... | 04/11/1989 |
| 4821212 | Three dimensional texture generator for computed terrain images An improvement for the real-time computer generation of visual scenes based on an algorithm that reduces the processing of elevation data to simple repetitive accumulations and a compare operation to generate occult data using grid elevation data bases is... | 04/11/1989 |
| 4819192 | Method of displaying image A method of displaying graphic image surface information data of an object lying within a three-dimensional space on a two-dimensional display screen when seen from a predetermined observing point is disclosed. A patch of the surface of an object is separ... | 04/04/1989 |
| 4817005 | Method of designing cubic receptacle and apparatus therefor A method of designing a cubic receptacle which determines the form of the receptacle in consideration of an internal capacity of the receptacle or an amount of material required for manufacturing the receptacle to prepare a two-dimensional pictorial image... | 03/28/1989 |
| 4737921 | Three dimensional medical image display system A real-time three-dimensional display device particularly suited for medical imaging is disclosed. The device includes a plurality of individual processing elements each having an image memory for storing a mini-image of a portion of the object as viewed ... | 04/12/1988 |
| 4730261 | Solids modelling generator Surface fill using Bresenhem algorithm concepts can be adapted to handle the hidden surface and shading functions required in solids modelling. A first plurality of vector generators provides the surface fill function, a second plurality of vector generat... | 03/08/1988 |
| 4719585 | Dividing cubes system and method for the display of surface structures contained within the interior region of a solid body A system for displaying three dimensional surface structures employs the analysis of voxel elements defined by eight cubically adjacent grid locations which are associated with at least one physical property defined throughout a three dimensional body. Th... | 01/12/1988 |
| 4709231 | Shading apparatus for displaying three dimensional objects An apparatus for shading a polyhedron at high speed is disclosed which includes the combination of a polygon-scan line conversion processor and an inner product interpolation processor for obtaining a pair of inner products of vectors indicative of a rela... | 11/24/1987 |
| 4683466 | Multiple color generation on a display A color display graphics system includes three bit map memories for storing bits representing red, green and blue colors respectively. Combinations of bits from the same address locations of each bit map memory display a pixel which could be any one of ei... | 07/28/1987 |
| 4682160 | Real time perspective display employing digital map generator A system for generating a real time perspective view of the terrain lying along an aircraft's flight path accesses terrain data stored in a digital map generator and converts the data into a perspective representation of the terrain on the face of a suita... | 07/21/1987 |
| 4679040 | Computer-generated image system to display translucent features with anti-aliasing A computer-generated image system that is described in the Disclosure has a videoprocessor circuit with an integrator circuit to assign a predetermined identification to each edge of each face of any image that is to be displayed. Also, it has a "skip-ove... | 07/07/1987 |
| 4660157 | Real time video perspective digital map display method A digital system for producing a real-time visual display in perspective of the terrain over which an aircraft is passing on the basis of compressed digital data stored on a cassette tape includes a perspective processor for transforming the addresses of ... | 04/21/1987 |
| 4645459 | Computer generated synthesized imagery The disclosure relates to a computer controlled imaging system involving a digital image processing and display system which has the ability to compose and construct a display scene from a library of images with sufficient processing speed to permit real-... | 02/24/1987 |
| 4600200 | Three-dimensional image display system A three-dimensional image display system comprising a video information memory, storing video information in the form of a perspective view, a reading circuit for reading out the video information stored in the video information memory while scrolling the... | 07/15/1986 |
| 4570233 | Modular digital image generator A digital image generator (DIG) that realizes a modular architecture. The DIG employes a geometric processor that processes a plurality of prioritized faces which comprise an image to be displayed. The faces, in turn, comprise a plurality of picture eleme... | 02/11/1986 |
| 4525858 | Method and apparatus for reconstruction of three-dimensional surfaces from interference fringes A fully automatic method for rapidly and unambiguously interpreting fringe patterns, including those having branched fringes, is provided. The information from the fringe patterns processed by the method of the invention can be used in testing, surface ch... | 06/25/1985 |
| 4489389 | Real time video perspective digital map display A digital system for producing a real-time visual display in perspective of the terrain over which an aircraft is passing on the basis of compressed digital data stored on a cassette tape includes a perspective processor for transforming the addresses of ... | 12/18/1984 |
| 4348184 | Landing light pattern generator for digital image systems A system is described for use in a simulator apparatus, particularly a simulator of an aircraft, whereby aircraft landing lights can be simulated effectively in a night scene. This is accomplished by increasing the illumination intensity of a part of each... | 09/07/1982 |
| 4297691 | Figure displaying device A figure displaying device for generating a brightness signal which corresponds to a figure information to be displayed as well as for generating a brightness modulation signal which varies within a predetermined first region on a display screen. The devi... | 10/27/1981 |
