Filters: Collection: "ir_uspace"
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 126 |
 |
Hansen, Charles D. | Binary-swap volumetric rendering on the T3D | This paper presents a data distributed parallel raytraced volume rendering algorithm and its implementation on the CRI T3D. This algorithm distributes the data and the computational load to individual processing units to achieve fast and high-quality rendering of high-resolution data. The volume dat... | Volume rendering; Binary-swap; Ray tracing; Parallel rendering | 1995 |
| 127 |
 |
Hansen, Charles D. | Data distributed, parallel algorithm for ray-traced volume rendering | This paper presents a divide-and-conquer ray-traced volume rendering algorithm and a parallel image compositing method, along with their implementation and performance on the Connection Machine CM-5, and networked workstations. This algorithm distributes both the data and the computations to individ... | Volume rendering; Ray tracing; ; Computer algorithms; Scientific visualization; Network computing; Massively parallel processing | 1993 |
| 128 |
 |
Freire, Juliana; Silva, Claudio T. | VisMashup: streamlining the creation of custom visualization applications | Visualization is essential for understanding the increasing volumes of digital data. However, the process required to create insightful visualizations is involved and time consuming. Although several visualization tools are available, including tools with sophisticated visual interfaces, they are o... | VisMashup; Dataflow; Visualization systems; Mashups; Medleys | 2009-11 |
| 129 |
 |
Hansen, Charles D. | FluoRender: An application of 2D image space methods for 3D and 4D confocal microscopy data visualization in neurobiology research | 2D image space methods are processing methods applied after the volumetric data are projected and rendered into the 2D image space, such as 2D filtering, tone mapping and compositing. In the application domain of volume visualization, most 2D image space methods can be carried out more efficiently t... | 2012-01-01 | |
| 130 |
 |
Hansen, Charles D. | Data distributed, parallel algorithm for ray-traced volume rendering | This paper presents a divide-and-conquer ray-traced volume rendering algorithm and a parallel image compositing method, along with their implementation and performance on the connection Machine CM-5, and networked workstations. This algorithm distributes both the data and the computations to individ... | Volume rendering; Ray tracing; ; Computer algorithms; Scientific visualization; Network computing; Massively parallel processing | 1993 |
| 131 |
 |
Tasdizen, Tolga; Whitaker, Ross T. | Particle-based simulation of fluids | Due to our familiarity with how fluids move and interact, as well as their complexity, plausible animation of fluids remains a challenging problem. We present a particle interaction method for simulating fluids. The underlying equations of fluid motion are discretized using moving particles and th... | 2003 | |
| 132 |
 |
Cohen, Elaine | Minimum distance queries for polygonal and parametric models | Calculation of the minimum distance to a geometric object or the minimum separation between objects is a fundamental problem that has application in a variety of arenas. Minimum separation queries for sculptured surfaces are believed particularly difficult, yet are increasingly important as modeli... | Minimum separation; Minimum distance; Virtual prototyping | 1997 |
| 133 |
 |
Kopta, Daniel M.; Kensler, Andrew Erin; Spjut, Josef Bo; Brunvand, Erik L.; Davis, Al | Fast, effective BVH updates for dynamic ray-traced scenes using tree rotations | Bounding volume hierarchies are a popular choice for ray tracing animated scenes due to the relative simplicity of refitting bounding volumes around moving geometry. However, the quality of such a refitted tree can degrade rapidly if objects in the scene deform or rearrange significantly as the ... | Ray tracing; Acceleration structures; Bounding volume hierarchies; Tree rotations; Dynamic scenes; Parallel update | 2011 |
| 134 |
 |
Hansen, Charles D. | Semotus visum: a flexible remote visualization framework | By offering more detail and precision, large data sets can provide greater insights to researchers than small data sets. However, these data sets require greater computing resources to view and manage. Remote visualization techniques allow the use of computers that cannot be operated locally. The S... | Remote visualization; Semotus Visum | 2002 |
| 135 |
 |
Breaderson, Dean J. | The I3Stick: an inexpensive, immersive, interaction device | Virtual environments require interaction devices that are intuitive and ergonomic, yet capable of many input parameters. Many devices satisfying these requirements can be expensive, difficult to manipulate, and often require the integration of large software libraries with existing applications. We ... | Virtual environments; I3Stick; Interaction devices | 1999 |
| 136 |
 |
Johnson, Christopher R. | Computer simulation and visualization in medicine | The goals of medical simulation and visualization are multifaceted. While some simulations and visualizations facilitate diagnosis, others help physicians plan surgery, therapy, and other forms of treatment. Still other simulation and visualization techniques are used for medical training and to acq... | Technology; Computer assisted instruction; Computer graphics | 2000 |
| 137 |
 |
Cohen, Elaine | Second order surface analysis using hybrid symbolic and numeric operators | Results from analyzing the curvature of a surface can be used to improve the implementation, efficiency, and effectiveness of manufacturing and visualization of sculptured surfaces. In this paper, we develop a robust method using hybrid symbolic and numeric operators to create trimmed surfaces each... | Surface analysis; Hybrid symbolic operators; Numeric operators | 1992 |
| 138 |
 |
Shirley, Peter S.; Thompson, William B. | Night rendering | The issues of realistically rendering naturally illuminated scenes at night are examined. This requires accurate models for moonlight, night skylight, and starlight. In addition, several issues in tone reproduction are discussed: eliminatiing high frequency information invisible to scotopic (night v... | Night rendering; Low light -- Computer models | 2000 |
| 139 |
 |
Bruderlin, Beat | DI - An object-oriented user interface toolbox for modula-2 applications | The DI dialog interface tool library for Modula-2 applications described in this paper facilitates the design and implementation of graphical, object-oriented user interfaces for workstations with a graphical screen, a mouse and a keyboard. Much emphasis is put on the portability of the application... | DI dialog interface tool | 1990 |
| 140 |
 |
Cohen, Elaine | Volume rendering with multidimensional peak finding | Peak finding provides more accurate classification for direct volume rendering by sampling directly at local maxima in a transfer function, allowing for better reproduction of high-frequency features. However, the 1D peak finding technique does not extend to higherdimensional classification. In this... | 2012-01-01 | |
| 141 |
 |
Cohen, Elaine | Hybrid symbolic and numeric operators as tools for analysis of freeform surfaces | Freeform surfaces are commonly used in Computer Aided Geometric Design?? so accurate analysis of surface properties is becoming increasingly important In this paper we de ne surface slope and surface speed?? develop visualization tools?? and demonstrate that they can be useful in the design proc... | Freeform surfaces | 1992 |
| 142 |
 |
Cohen, Elaine | Hybrid symbolic and numeric operators as tools for analysis of freeform surfaces | Freeform surfaces are commonly used in Computer Aided Geometric Design, so accurate analysis of surface properties is becoming increasingly important. In this paper we define surface slope and surface speed, develop visualization tools, and demonstrate t h a t they can be useful in the design proces... | Freeform surfaces; Hybrid operators | 1992 |
| 143 |
 |
Bargteil, Adam Wade | Dynamic sprites | Traditional methods for creating dynamic objects and characters from static drawings involve careful tweaking of animation curves and/or simulation parameters. Sprite sheets offer a more drawing-centric solution, but they do not encode timing information or the logic that determines how objects shou... | 2014-01-01 | |
| 144 |
|
Bargteil, Adam Wade | Dynamic sprites | Traditional methods for creating dynamic objects and characters from static drawings involve careful tweaking of animation curves and/or simulation parameters. Sprite sheets offer a more drawing-centric solution, but they do not encode timing information or the logic that determines how objects shou... | 2013-01-01 | |
| 145 |
 |
Pascucci, Valerio | Performance Analysis and Visualization | 2012 | ||
| 146 |
 |
Hansen, Charles D. | Accelerated isosurface extraction in time-varying fields | For large time-varying data sets, memory and disk limitations can lower the performance of visualization applications. Algorithms and data structures must be explicitly designed to handle these data sets in order to achieve more interactive rates. The Temporal Branch-on-Need Octree (T-BON) extends t... | Isosurfaces; Time-dependent scalar field visualization; Multiresolution methods; Octree; Bricking; Unstructured grid visualization; Out-of-core visualization | 2000 |
| 147 |
 |
Pascucci, Valerio | Combining in-situ and in-transit processing to enable extreme-scale scientific analysis | With the onset of extreme-scale computing, I/O constraints make it increasingly difficult for scientists to save a sufficient amount of raw simulation data to persistent storage. One potential solution is to change the data analysis pipeline from a post-process centric to a concurrent approach based... | 2012-01-01 | |
| 148 |
 |
Parker, Steven G. | Memory sharing for interactive ray tracing on clusters | We present recent results in the application of distributed shared memory to image parallel ray tracing on clusters. Image parallel rendering is traditionally limited to scenes that are small enough to be replicated in the memory of each node, because any processor may require access to any piece o... | Ray tracing; Out-of-core rendering; Distributed shared memory; Cache miss reduction; Parallel rendering | 2005-02 |
| 149 |
 |
Hansen, Charles D. | Transfer function design based on user selected samples for intuitive multivariate volume exploration | Multivariate volumetric datasets are important to both science and medicine. We propose a transfer function (TF) design approach based on user selected samples in the spatial domain to make multivariate volumetric data visualization more accessible for domain users. Specifically, the user starts the... | 2013-01-01 | |
| 150 |
 |
Kirby, Robert Michael II | Investigation of smoothness-increasing accuracy-conserving filters for improving streamline integration through discontinuous fields | Streamline integration of fields produced by computational fluid mechanics simulations is a commonly used tool for the investigation and analysis of fluid flow phenomena. Integration is often accomplished through the application of ordinary differential equation (ODE) integrators - integrators whose... | Streamline integration; Finite element; Finite volume; Filtering techniques; Adaptive error control | 2008 |