The authors describe the design and implementation of an algorithm and a processor which can be used to accelerate computations in which large amounts of rotations (circular as well as hyperbolic) are involved. The pr...
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The authors describe the design and implementation of an algorithm and a processor which can be used to accelerate computations in which large amounts of rotations (circular as well as hyperbolic) are involved. The processor is a low-cost high-throughput VLSI implementation of the algorithm. With 10/sup 7/ rotations per second, many real-time and interaction-time applications in scientific computation become feasible. The required storage and/or silicon area is low and the execution time is independent of the particular operation performed. Another feature of this CORDIC design is its pipelined architecture and floating point extension. It is angle-pipelinable at the bit-level and has an execution time which is independent of any possible operation that can be executed.< >
A special purpose hardware is described which is called Patch Renderer for fast polygon rendering. Patch Renderer has 64 VIMUs (vertical interpolation and masking units), where each VIMU processes a span having 64 con...
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A special purpose hardware is described which is called Patch Renderer for fast polygon rendering. Patch Renderer has 64 VIMUs (vertical interpolation and masking units), where each VIMU processes a span having 64 consecutive pixels, and processes a 64*64 pixel area, called a pixel patch, at a time. The processing power of each VIMU comes from the bit-serial quadratic interpolator which performs the quadratic interpolation of the functional values such as color intensity values at all pixels within the given span. Its quadratic feature enables the authors to use the Fast Phong Shading, which produces more realistic images than Gouraud shading. The estimated performance of Patch Renderer is about 360000 Fast Phong-Shaded triangles per second at 40 MHz.< >
This paper advances a means by which the conventions and methods of digital "painting" and image manipulation programs can be extended into the third dimension, providing sculpting tools that are natural and...
ISBN:
(纸本)0897913515
This paper advances a means by which the conventions and methods of digital "painting" and image manipulation programs can be extended into the third dimension, providing sculpting tools that are natural and appropriate for a restricted but very useful class of models. Attempts to approximate "drawing" in 3D do not necessarily involve computergraphics [Gregory71]. Efforts in this area are a subject of continuing graphics research [Schmandt82], [Sachs89]. The key to the approach undertaken in the work described here is the use of an unusual hardware technique for displaying video rasters as surfaces. With such a display, existing software for 2D graphics and imageprocessing can be used, without modification, for creating and modifying three-dimensional surfaces. The resulting raster data can then be converted into conventional 3D databases for further processing and display. The aim of this research is to create consistent, unified methods for computer-assisted drawing, painting, modeling, and animation.
This paper advances a means by which the conventions and methods of digital 'painting' and image manipulation programs can be extended into the third dimension, providing sculpting tools that are natural and a...
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This paper advances a means by which the conventions and methods of digital 'painting' and image manipulation programs can be extended into the third dimension, providing sculpting tools that are natural and appropriate for a restricted but very useful class of models. Attempts to approximate 'drawing' in 3D do not necessarily involve computergraphics. Efforts in this area are a subject of continuing graphics research. The key to the approach undertaken in the work described here is the use of an unusual hardware technique for displaying video rasters as surfaces. With such a display, existing software for 2D graphics and imageprocessing can be used, without modification, for creating and modifying three-dimensional surfaces. The resulting raster data can then be converted into conventional 3D databases for further processing and display. The aim of this research is to create consistent, unified method for computer-assisted drawing, painting, modeling, and animation.
This conference proceedings contains 52 papers. The main subjects are rapid prototyping techniques, software engineering, mathematics and computer science, teaching methods, alternate approaches to the first course in...
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ISBN:
(纸本)0897913469
This conference proceedings contains 52 papers. The main subjects are rapid prototyping techniques, software engineering, mathematics and computer science, teaching methods, alternate approaches to the first course in computer science, projects courses, compiler-writing projects, parallel programming, concurrency, concurrent languages, computergraphics as a discipline, algorithm visualization in computer science laboratories, imageprocessing and graphics, communication skills, artificial intelligenence, and object oriented programming.
A resurgence of interest in the BoreHole TeleViewer (BHTV) has been fueled by the industry’s interest in evaluating thinly laminated zones of previously overlooked potential reservoirs and for a more graphic descript...
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The proceedings contain 32 papers. The topics discussed include: the virtual erector set: dynamic simulation with linear recursive constraint propagation;direct interaction with a 3D volumetric environment;reality bui...
ISBN:
(纸本)0897913515
The proceedings contain 32 papers. The topics discussed include: the virtual erector set: dynamic simulation with linear recursive constraint propagation;direct interaction with a 3D volumetric environment;reality built for two: a virtual reality tool;visualizing n-dimensional virtual worlds with n-vision;design for interactive performance in a virtual laboratory;towards image realism with interactive update rates in complex virtual building environments;improving interaction with radiosity-based lighting simulation programs;acceleration techniques for progressive refinement radiosity;real time radiosity through parallel processing and hardware acceleration;automatic illustration of 3D geometric models: lines;visualization methods and simulation steering for a 3D turbulence model of Lake Erie;and real time spline curves from interactively sketched data.
In recent years, a number of research groups have implemented various versions of virtual world concept [2, 4, 6, 7]. A common thread among these virtual worlds is a direct manipulation user interface paradigm based o...
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