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Creator | Title | Description | Subject | Date |
| 1 |
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Parker, Steven G.; Hansen, Charles D.; Shirley, Peter S. | Parallel methods for isosurface visualization | isosurface extraction and vis utilization is crucial for explorative scientific visualization of extremely large scientific data. The shear number of polygons extracted and the subsequent rendering time limit interactivity. We explore two solutions to this problem: exploiting parallel graphics hardw... | Isosurfaces; Ray tracing; Large data | 1999 |
| 2 |
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Carter, Tony M. | The path programmable logic (PPL) user's manual | This manual describes the primitive NMOS path programmable logic cells currently in use at the University of Utah. It contains detailed descriptions, schematics and composite layout of all cells. Also included are PPL programming rules as well as layout design rules for each cell set. | | 1982 |
| 3 |
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Hansen, Charles D. | Graphics applications for grid computing | The first article, "Enabling View-Dependent Progressive Volume Visualization on the Grid" by Alan Norton and Alyn Rockwood describes and evaluates the communication in a progressive, visibility-driven compression scheme for distributing volumetric data from grid resources to volume-rendering clien... | Grid computing | 2003-03 |
| 4 |
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Hansen, Charles D. | Parallel rendering | Massively parallel computers have emerged as valuable tools for performing scientific and engineering computations, far outstripping the capabilities of independent workstations in both sheer floating point performance and memory capacity. As the resolution of simulation models increases, graphics ... | Parallel rendering; Massively parallel processors | 1994 |
| 5 |
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Hansen, Charles D. | Recent developments in parallel rendering | Using parallel computers for computer graphics rendering dates back to the late 1970s. Several papers published then focused on image space decompositions for theoretical parallel machines. Early research concentrated on algorithmic studies and special-purpose hardware, but the growing availability... | Parallel rendering; Massively parallel processors | 1994 |
| 6 |
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Parker, Steven G.; Hansen, Charles D. | Interactive volume rendering of large datasets using the silicon graphics Onyx4 visualization system | Many recent approaches to interactive volume rendering have focused on leveraging the power of commodity graphics hardware. Though currently limited to relatively small datasets, these approaches have been overwhelmingly successful. As the size of volumetric datasets continues to grow at a rapid pa... | Volume visualization; Onyx4; Interactive volume rendering; Parallel volume rendering; Large datasets; Visualization systems | 2005 |
| 7 |
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Parker, Steven G.; Hansen, Charles D. | Interactive volume rendering of large datasets using the silicon graphics Onyx4 visualization system | Many recent approaches to interactive volume rendering have focused on leveraging the power of commodity graphics hardware. Though currently limited to relatively small datasets, these approaches have been overwhelmingly successful. As the size of volumetric datasets continues to grow at a rapid ... | Interactive volume; Rendering; Large datasets; Onyx4; Silicon graphics | 2004-01-27 |
| 8 |
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Hansen, Charles D. | Interactive texture-based volume rendering for large data sets | Visualization is an integral part of scientific computation and simulation. State-of-the-art simulations of physical systems can generate terabytes to petabytes of time-varying data where a single time step can contain more than a gigabyte of data per variable. As memory sizes continue to increase, ... | Parallel rendering; Volume rendering; TRex | 2001 |
| 9 |
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Lefohn, Aaron; Kniss, Joe; Hansen, Charles D.; Whitaker, Ross T. | Interactive deformation and visualization of level set surfaces using graphics hardware | Deformable isosurfaces, implemented with level-set methods, have demonstrated a great potential in visualization for applications such as segmentation, surface process- ing, and surface reconstruction. Their usefulness has been limited, however, by two problems. First, 3D level sets are relativel... | Interactive deformation; Deformable isosurfaces; Level-set methods | 2003-04-16 |
| 10 |
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Hansen, Charles D.; Whitaker, Ross T. | Interactive deformation and visualization of level set surfaces using graphics hardware | Deformable isosurfaces, implemented with level-set methods, have demonstrated a great potential in visualization for applications such as segmentation, surface processing, and surface reconstruction. Their usefulness has been limited, however, by their high computational cost and and reliance on sig... | Deformation; Level sets; Deformable models; Image segmentation; Volume visualization; GPU; Streaming computation; Isosurfaces | 2003 |
| 11 |
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Henderson, Thomas C. | Agent-based engineering drawing analysis | Interpretation of paper drawings has received a good deal of attention over the last decade. Related areas such as direct interpretation of human drawings (HCI), search and indexing of graphics databases, and knowledge representation in the domain of graphics and drawing understanding have also s... | Interpretation; Human drawings; HCI; Graphic databases | 2002-02-04 |
| 12 |
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Hansen, Charles D.; Shirley, Peter S. | Interactive caustics using local precomputed irradiance | Bright patterns of light focused via reflective or refractive objects onto matte surfaces are called "caustics". We present a method for rendering dynamic scenes with moving caustics at interactive rates. This technique requires some simplifying assumptions about caustic behavior allowing us to co... | Illumination | 2004 |
| 13 |
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Hansen, Charles D. | Scout: a hardware-accelerated system for quantitatively driven visualization and analysis | Quantitative techniques for visualization are critical to the successful analysis of both acquired and simulated scientific data. Many visualization techniques rely on indirect mappings, such as transfer functions, to produce the final imagery. In many situations, it is preferable and more powerful ... | Visualization systems; Hardware acceleration; Volume rendering; Multivariate visualization | 2004 |
| 14 |
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Hansen, Charles D. | Illustrative interactive stipple rendering | Abstract-Simulating hand-drawn illustration can succinctly express information in a manner that is communicative and informative. We present a framework for an interactive direct stipple rendering of volume and surface-based objects. By combining the principles of artistic and scientific illustratio... | | 2003-04 |
| 15 |
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Hansen, Charles D. | Interactive volume rendering using multi-dimensional transfer functions and direct manipulation widgets | Most direct volume renderings produced today employ onedimensional transfer functions, which assign color and opacity to the volume based solely on the single scalar quantity which comprises the dataset. Though they have not received widespread attention, multi-dimensional transfer functions are a v... | Volume rendering; Volume visualization; Direct volume rendering; Multidimensional transfer functions; Direct manipulation widgets; Graphics hardware | 2001 |
| 16 |
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Evans, David | Graphical man/machine communications: November 1966 | Semiannual progress report for period ending 30 November, 1966. | | 1966-11 |
| 17 |
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Hansen, Charles D. | Non-photorealistic volume rendering using stippling techniques | Simulating hand-drawn illustration techniques can succinctly express information in a manner that is communicative and informative. We present a framework for an interactive direct volume illustration system that simulates traditional stipple drawing. By combining the principles of artistic and sci... | Volume rendering; Non-photorealistic rendering; Scientific visualization; Medical imaging | 2002 |
| 18 |
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Parker, Steven G.; Hansen, Charles D.; Shirley, Peter S. | Interactive ray tracing for volume visualization | We present a brute-force ray tracing system for interactive volume visualization, The system runs on a conventional (distributed) shared-memory multiprocessor machine. For each pixel we trace a ray through a volume to compute the color for that pixel. Although this method has high intrinsic computa... | Ray tracing; Volume visualization; Isosurfaces; Maximum-intensity projection; Traversal optimizations | 1999 |
| 19 |
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Gooch, Bruce; Shirley, Peter S. | Automatic image creation via artistic composition principles | Methods for choosing image parameters in both art and computer graphics are currently subjective. The choice of parameters results in images of varying quality. One aspect of image quality is the composition of the image. While the principles underlying composition are somewhat subjective, a portion... | Image parameters | 2000 |
| 20 |
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Hansen, Charles D. | Interactive volume rendering using multi-dimensional transfer functions and direct manipulation widgets | Most direct volume renderings produced today employ one-dimensional transfer functions, which assign color and opacity to the volume based solely on the single scalar quantity which comprises the dataset. Though they have not received widespread attention, multi-dimensional transfer functions are a ... | Volume rendering; Volume visualization; Direct volume rendering; Multidimensional transfer functions; Direct manipulation widgets; Graphics hardware | 2001 |
| 21 |
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Hansen, Charles D. | Penumbra maps: approximate soft shadows in real-time | Generating soft shadows quickly is difficult. Few techniques have enough flexibility to interactively render soft shadows in scenes with arbitrarily complex occluders and receivers. This paper introduces the penumbra map, which extends current shadow map techniques to interactively approximate soft ... | | 2003-01-01 |
| 22 |
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Hansen, Charles D. | Design of 2D time-varying vector fields | Design of time-varying vector fields, i.e., vector fields that can change over time, has a wide variety of important applications in computer graphics. Existing vector field design techniques do not address time-varying vector fields. In this paper, we present a framework for the design of time-vary... | | 2012-01-01 |
| 23 |
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Hansen, Charles D. | Cluster-based interactive volume rendering with Simian | Commodity-based computer clusters offer a cost-effective alternative to traditional largescale, tightly coupled computers as a means to provide high-performance computational and visualization services. The Center for the Simulation of Accidental Fires and Explosions (C-SAFE) at the University of... | Volume rendering; Simian | 2003-09-03 |
| 24 |
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Hansen, Charles D. | Interactive translucent volume rendering and procedural modeling | Direct volume rendering is a commonly used technique in visualization applications. Many of these applications require sophisticated shading models to capture subtle lighting effects and characteristics of volume metric data and materials. Many common objects and natural phenomena exhibit visual qua... | Volume rendering; Volume visualization; Direct volume rendering; Multidimensional transfer functions; Direct manipulation widgets; Graphics hardware | 2002 |
| 25 |
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Sloan, Peter-Pike | A painterly approach to human skin | Rendering convincing human figures is one of the unsolved goals of computer graphics. Previous work has concentrated on modeling physics of human skin. We have taken a different approach. We are exploring techniques used by artists, specifically artists who paint air-brushed portraits. Our goal is t... | Human skin | 1999 |
