Matches 301 - 350 out of 368 < 1 2 3 4 5 6 7 8 >
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5623586 Method and device for knowledge based representation and display of three dimensional objects  
The method serves to represent a three dimensional object and is especially adapted for use in the field of medical technology. At least a portion of the object is spatially recorded relative to at...
5594844 Three dimensional view using ray tracing through voxels subdivided numerically using object based parameters  
A picture generating apparatus using ray tracing has means for inputting data of objects from a data base for storing data of objects composing a virtual three dimensional space, means for...
5590249 Three dimensional sprite rendering apparatus and method  
A three dimensional sprite rendering apparatus for producing three dimensional graphic images includes a three dimensional graphic circuit for producing backgrounds of three dimensional graphics...
5583975 Image generating apparatus and method of generating an image by parallel processing thread segments  
An image generating apparatus used in the field of image processing such as Computer Graphics. The image generating apparatus comprises an input unit for setting data related to a shape of each...
5570460 System and method for volume rendering of finite element models  
The present invention converts an unstructured grid of finite volume data to a rectangular grid of voxel definitions for use by a volume rendering technique operable on such a rectangular grid of...
5566282 Apparatus and method for the visualization of a three-dimensional scene by means of maximum intensity projection  
An arrangement and a method for maximum intensity projection of a three-dimensional scene on a two dimensional display (11), via the calculation of first or higher-order interpolated values of...
5559935 Method and apparatus for generating isosurfaces  
An isosurface is composed of grid points having a predetermined scalar value. The method and apparatus of the present invention generates an isosurface by extracting from volume data a first grid...
5557711 Apparatus and method for volume rendering  
An apparatus and method adapted for performing volume rendering is disclosed in which the object space is divided between a plurality of processing units. Each processing unit generates a view of...
5553207 Method of and apparatus for region extraction in three-dimensional voxel data  
In a region extraction to be achieved by a concatenated region expansion processing, to improve reliability of extraction results and to reduce loads imposed on the operator, when a region other...
5548694 Collision avoidance system for voxel-based object representation  
Voxel-based objects are manipulated and interacted with in a physically ristic way such that during movement of the graphical objects, collisions are automatically detected and the graphical...
5544283 Method and apparatus for real-time volume rendering from an arbitrary viewing direction  
The method and apparatus of the present invention provides real-time reorientation of stored data and real-time visualization for high resolution volumetric datasets from an arbitrary designed...
5542036 Implicit modeling of swept volumes and swept surfaces  
A method of determining surfaces of swept volumes, which defines a region reserved for the removal of an object, or the motion of an object, is determined employing implicit modeling. A definition...
5522019 Methods and apparatus for efficiently generating isosurfaces and for displaying isosurfaces and surface contour line image data  
Methods and apparatus are provided for generating isosurfaces, given input data that includes (1) the representation of a set of points in three-dimensional space; (2) connectivity information with...
5515484 Method and apparatus for rendering volumetric images  
A method for rendering a three dimensional graphic object in a two dimensional display space by segmenting the object into parallelepipeds and decomposing the parallelepipeds into rods of voxels...
H001530 Surface extraction from a three-dimensional data set  
Surface image data representing a three-dimensional surface is extracted from a three-dimensional set of data representing characteristics of a volume in space (volumetric data) that encompasses...
5506785 Method and apparatus for generating hollow and non-hollow solid representations of volumetric data  
The invention is directed toward a method and apparatus for generating hollow and non-hollow solid representations of an object represented in terms of volumetric data. The volumetric data...
5499322 Device for processing three-dimensional image information, with extraction of significant lines  
An image is defined, in correspondence with a predetermined polyhedral meshing of a portion of the space, by a numerical value for each vertex of the meshing. Polygon processing includes receiving...
5499323 Volume rendering method which increases apparent opacity of semitransparent objects in regions having higher specular reflectivity  
Portions showing greater specular reflection of an object to be displayed are displayed with pixels whose opacity, α 1 , is emphasized according to the specular reflected component of a shading...
5497453 Method and apparatus for detecting and visualizing interferences between solids  
Methods and apparatus for automatically detecting and visually highlighting interference areas of a cross-section through displayed representations of solids. As a cross-sectioning plane (C) sweeps...
5452407 Method for representing a patient's treatment site as data for use with a CAD or CAM device  
A method is described for representing a treatment site (10) of a patient as data suitable for use with a computer-aided design device (46). The method includes scanning the treatment site(10) with...
5452416 Automated system and a method for organizing, presenting, and manipulating medical images  
An automated system for organizing, presenting, and manipulating medical images includes a database in which the medical images are structured into groups, each group including one or more image...
5442733 Method and apparatus for generating realistic images using a discrete representation  
A method for generating realistic images using discrete representations employs a discrete voxel based representation of the scene within a three-dimensional (3-D) Cubic Frame Buffer of...
5436613 System for detecting human presence in hazardous situations  
The disclosure relates to a system for the detection of human presence in hazardous situations near moving machinery; appropriately shaped electrodes are placed in an area to be safeguarded and a...
5412763 Method for displaying an image of a portion of the inside of a three-dimensional physical structure  
In order to display a portion of a physical structure on a screen, an intermediate "pointer" memory is created. The addresses of memory words in the pointer memory correspond to the coordinates of...
5412764 Three-dimensional image display apparatus using numerical projection  
An imaginary plane and a projection plane are set on both sides of three-dimensional image data to be parallel to each other. A plurality of projection rays are projected from the imaginary plane...
5402337 Method and apparatus for constructing three-dimensional surface shading image display  
A method and an apparatus for constructing three-dimensional surface shading image display from three-dimensional sequential tomographic images, capable of obtaining the distance image at a high...
5381518 Method and apparatus for imaging volume data using voxel values  
An imaging system for providing apparatus and method for projecting a two dimensional (2D) representation of three dimensional (3D) volumes where surface boundaries and objects internal to the...
5347459 Real time collision detection  
A method is provided for detecting a collision between a robot and one or more obstacles before it occurs. The robot is modeled by spheres in a voxelized workspace. Each voxel within the workspace...
5345490 Method and apparatus for converting computed tomography (CT) data into finite element models  
A method and apparatus for converting computed tomography (CT) data into finite element models. The system generates both 2-D and 3-D models using the automatic mesh generators, QUADTREE and...
5313567 Arrangement for determining and displaying volumetric data in an imaging system  
An imaging system apparatus and operating method thereof utilize a volumetric resampling technique with interpolation to determine sample point values on user-defined paths traced through a...
5226113 Method and apparatus for volumetric projection rendering using reverse ray casting  
A method for providing a volumetrically-rendered projection image using reverse ray casting, uses the steps of: acquiring, from an object volume of interest, a set of data sampled from each volume...
5222201 Method for displaying a portion of the body  
The problems of selection of objects having complex shapes and usually apprehended by a plurality of facets are solved by making use of curved surfaces, the equation of which is of the second...
5218534 Method of computation and processing of the image in conical projection, of a sampled three-dimensional object  
In order to carry out a three-dimensional reconstruction of an object acquired by a series of conical projections on a two-dimensional multidetector, the object is estimated by a sampled function....
5201035 Dynamic algorithm selection for volume rendering, isocontour and body extraction within a multiple-instruction, multiple-data multiprocessor  
This is a methodology which reduces the time required to render a volume with extracted isocontours and inserted cutting plane and perform an arbitrary rotation within a three-dimensional volume....
5187660 Arrangement for displaying on a display volumetric data  
A facility is provided for greatly enhancing the rate at which volumetric data is processed by display on a two-dimensional display. Specifically, the volumetric data is first divided into a...
5173947 Conformal image processing apparatus and method  
A conformal image processing apparatus and method in which image information is quantized into volume elements which are represented and stored in an array in such a fashion as to preserve their...
5166875 Reconstructing two and three dimensional images by two and three dimensional Fourier transforms in an MRI system  
In an MRI system, three dimensional data is acquired from a specific three dimensional region of a subject to be examined. An image reconstruction process using two dimensional Fourier transform is...
5166876 System and method for detecting internal structures contained within the interior region of a solid object  
In a method and apparatus for detecting and displaying arbitrary interior surfaces of a three-dimensional body from a regular array of values of at least one physical property in the interior of...
5113357 Method and apparatus for rendering of geometric volumes  
A method and apparatus is provided to directly render volumes from volume data whereby the resolution of the volume is not lost and the volume data is completely interactive with geometric data....
5101475 Method and apparatus for generating arbitrary projections of three-dimensional voxel-based data  
A device for generating parallel and perspective projections of 3-D voxel-based images, viewed along arbitrary viewing directions. The method involves using retrieval parameters to retrieve voxels...
5095521 Method for the computing and imaging of views of an object  
With a digital volume of data representing a non-destructive investigation conducted on a body, an operation is made for the segmentation of objects contained in this digital volume, as well as an...
5091960 High-speed image rendering method using look-ahead images  
A look-ahead image is employed during ray tracing of the image rendering process to eliminate the processing of pixels which are of no interest within a given boundary of the ray. During rendering,...
5086495 Solid modelling system with logic to discard redundant primitives  
A solid modelling system for generating a spatial representation of an object defined by a structure having a plurality of linked nodes representing the object in terms of solid geometric...
5079699 Quick three-dimensional display  
A diagnostic imaging system generates a three-dimensional display from a series of two-dimensional slice images. A region of interest, defined from a boundary of interest, is selected from one...
5038302 Method of converting continuous three-dimensional geometrical representations into discrete three-dimensional voxel-based representations within a three-dimensional voxel-based system  
Method of converting continuous 3-D geometrical representations into a discrete set of voxels in discrete 3-D voxel space. In one embodiment, a method is provided for converting a continuous 3-D...
5025375 Volume data transmission system  
A volume data transmission system for transmitting volume data consisting of voxel data through a communication line includes a projection data generating section, a data selecting section, and a...
4985834 System and method employing pipelined parallel circuit architecture for displaying surface structures of the interior region of a solid body  
Arbitrary interior surfaces of a three-dimensional body are displayed from a regular array of values of at least one physical property in the interior of the body. The physical property...
4985856 Method and apparatus for storing, accessing, and processing voxel-based data  
A method and apparatus for storing to and accessing from a memory device, one or more voxels of a beam disposed along one or more of a plurality of storage/retrieval directions of a 3-D matrix...
4984157 System and method for displaying oblique planar cross sections of a solid body using tri-linear interpolation to determine pixel position dataes  
A method and apparatus for displaying arbitrary cross-sectional views of a three-dimensional body from a regular array of values of at least one physical property in the interior of the body...
4982180 Method of displaying structures three-dimensionally  
A method of displaying a structure (SML) three-dimensionally, in which a rectangular parallelepiped (RP), having on each of its sides distances (L x , L y , L z ) between minimum and maximum...
Matches 301 - 350 out of 368 < 1 2 3 4 5 6 7 8 >