Filters: Collection: "ir_uspace"
| Creator | Title | Description | Subject | Date | ||
|---|---|---|---|---|---|---|
| 151 |
 |
Warnock, John E. | A hidden line algorithm for halftone picture representation | In exploring applications in computer graphics, one finds quickly that the representation of three dimensional objects in picture form is both a desirable and necessary capability. Applications dealing with any form of spatial design or with visual environment simulation need the ability to represen... | Halftone picture representation; Spatial design | 1968 |
| 152 |
 |
Willemsen, Peter; Gooch, Amy A.; Thompson, William B.; Creem-Regehr, Sarah Hope | Effects of stereo viewing conditions on distance perception in virtual environments | Several studies from different research groups investigating perception of absolute, egocentric distances in virtual environments have reported a compression of the intended size of the virtual space. One potential explanation for the compression is that inaccuracies and cue confliicts involving ... | Distance perception; Virtual environments; Stereo viewing conditions | 2005-02-15 |
| 153 |
 |
Yaffe, Joanne | Hypermedia computer-based education in social work education | Hypermedia computer-based education (CBE) is an emerging information technology that makes possible user-directed, nonsequential exploration of, and interaction with, information presented through a variety of media including text, animation, graphics, sound, and video. | Computer-based education | 1994 |
| 154 |
 |
Hansen, Charles D. | Isosurface extraction in time-varying fields using a temporal branch-on-need tree (T-BON) | The Temporal Branch-on-Need Tree (T-BON) extends the threedimensional branch-on-need octree for time-varying isosurface extraction. At each time step, only those portions of the tree and data necessary to construct the current isosurface are read from disk. This algorithm can thus exploit the tempor... | Isosurfaces; Time-dependent scalar field visualization; Octree; Multiresolution methods | 1999 |
| 155 |
 |
Bruderlin, Beat | Constraint objects - integrating constraint definition and interaction | This paper describes the implementation of a new constraint-based technique for direct manipulation in interactive CAD, which will simplify the design process, especially in the early stages. We introduce so called Constraint Objects and Parameter Objects which constitute an object-oriented view on ... | Constraint objects; Parameter objects | 1992 |
| 156 |
 |
Bruderlin, Beat | Constraint objects ? integrating constraint definition and graphical interaction | This paper describes the implementation of a new constraint??based tech?? nique for direct manipulation in interactive CAD which will simplify the design process especially in the early stages We introduce so called Constraint Objects and Parameter Objects which constitute an object??oriented ... | Constraint objects | 1992 |
| 157 |
 |
Weinstein, David | Hierarchical data structures for interactive volume visualization | In order to interactively investigate large-scale 3D data sets, we propose an improved hierarchical data structure for structured grids and an original hierarchical d a t a structure for unstructured grids. These multi-tiered implementations allow the user to interactively control both the local and... | Hierarchical data structures; Volume visualization; 3D data sets | 1995 |
| 158 |
 |
Smits, Brian | Global illumination test scenes | The global illumination community has discussed having a database of scenes that could be used to compare and validate different global illumination algorithms. We present a set of test scenes for global illumination algorithms and propose that they be the beginning of such a database. These scenes ... | Global illumination | 2000 |
| 159 |
 |
Kirby, Robert Michael II | ElVis: A system for the accurate and interactive visualization of high-order finite element solutions | This paper presents the Element Visualizer (ElVis), a new, open-source scientific visualization system for use with high order finite element solutions to PDEs in three dimensions. This system is designed to minimize visualization errors of these types of fields by querying the underlying finite ele... | 2012-01-01 | |
| 160 |
 |
Steve A. Maas | FEBio: finite elements for biomechanics | 2012 | ||
| 161 |
 |
Pascucci, Valerio | Hybrid Computing for HPC Applications | 2012 | ||
| 162 |
 |
Freire, Juliana; Silva, Claudio T. | Querying and creating visualizations by analogy | While there have been advances in visualization systems, particularly in multi-view visualizations and visual exploration, the process of building visualizations remains a major bottleneck in data exploration. We show that provenance metadata collected during the creation of pipelines can be reused ... | Provenance; VisTrails; Pipelines; Query-by-example | 2007-11 |
| 163 |
 |
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?? e ciency?? and e ectiveness 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 e... | Second order surface analysis; Visualization; Sculptured surfaces | 1992 |
| 164 |
 |
Evans, David | Display of complex three dimensional finite element models | Complex three dimensional models can be displayed after an automatic generation of a finite element (panel) mapping. although this automatic generation algorithm fails at certain levels of model complexity, the elimination of these failures can be accomplished through user interaction. This report p... | Three dimensional models; Finite element models | 1978 |
| 165 |
 |
Shirley, Peter S.; Gooch, Bruce | Artistic vision: painterly rendering using computer vision techniques | We present a method that takes a raster image as input and produces a painting-like image composed of strokes rather than pixels. Unlike previous automatic painting methods, we attempt to keep the number of brush-stroke small. This is accomplished by first segmenting the image into features, finding... | Painting-like image; Raster image; Painterly rendering | 2000 |
| 166 |
 |
Hansen, Charles D.; Wald, Ingo | Interactive isosurface ray tracing of large octree volumes | We present a technique for ray tracing isosurfaces of large compressed structured volumes. Data is first converted into a losslesscompression octree representation that occupies a fraction of the original memory footprint. An isosurface is then dynamically rendered by tracing rays through a min/max... | 2006-09 | |
| 167 |
 |
Hansen, Charles D. | Parallel volume rendering using binary-swap compositing | Existing volume rendering methods, though capable of very effective visualizations, are computationally intensive and therefore fail to achieve interactive rendering rates for large data sets. Although computing technology continues to advance, computer processing power never seems to catch up to th... | 1994 | |
| 168 |
 |
Bhanu, Bir; Henderson, Thomas C. | Range data processing: representation of surfaces by edges | Representation of surfaces by edges is an important and integral part of a robust 3-D model based recognition scheme. Edges in a range image describe the intrinsic characteristics about the shape of the objects. In this paper we present three approaches for detecting edges in 3-D range data. The ap... | Range data; Edges; Recognition scheme; 3-D | 1985 |
| 169 |
 |
Shirley, Peter S. | Parallel point reprojection | Improvements in hardware have recently made interactive ray tracing practical for some applications. However, when the scene complexity or rendering algorithm cost is high, the frame rate is too low in practice. Researchers have attempted to solve this problem by caching results from ray tracing and... | Point projection; Ray tracing; Render cache | 2001 |
| 170 |
 |
Bronson, Jonathan Richard | Lattice cleaving: a multimaterial tetrahedral meshing algorithm with guarantees | We introduce a new algorithm for generating tetrahedral meshes that conform to physical boundaries in volumetric domains consisting of multiple materials. The proposed method allows for an arbitrary number of materials, produces high-quality tetrahedral meshes with upper and lower bounds on dihedral... | 2014-01-01 | |
| 171 |
 |
Mecklenburg, Robert | STORY: A hierarchical animation and storyboarding system for alpha-1 | We introduce an integrated animation and storyboarding system that simplifies the creation and refinement of computer generated animations. The framework models both the process and product of an animated sequence, making animation more accessible for communication and as an art form. The system a... | STORY; storyboarding system; animation system; computer generated animations | 1993 |
| 172 |
 |
Hansen, Charles D. | Wavelet representation of contour sets | We present a new wavelet compression and multiresolution modeling approach for sets of contours (level sets). In contrast to previous wavelet schemes, our algorithm creates a parametrization of a scalar field induced by its contours and compactly stores this parametrization rather than function valu... | Contours; Geometry compression; Isosurfaces; Level sets; Multiresolution methods; Wavelets | 2001 |
| 173 |
 |
Schott, Mathias; Hansen, Charles D | A directional occlusion shading model for interactive direct volume rendering | Volumetric rendering is widely used to examine 3D scalar fields Key aspect: provide perceptual cues to aid in understanding the data set Shading models with natural lighting conditions better convey depth information and spatial relationships Traditionally require considerable (pre)computatio... | ||
| 174 |
 |
Thompson, William B. | Evaluating the accuracy of size perception in real and virtual environments | Accurate perception of the size of 3D objects depicted on 2D desktop displays is important for many applications. Whether users perceive objects depicted on a display to be the same size as comparable real world objects is not well understood. We propose using affordances judgments as a way of measu... | 2012-01-01 | |
| 175 |
 |
Poeppelmeier, Charles Christian | A boolean sum interpolation scheme to random data for computer aided geometric design | This thesis presents a new imterpolation function for randomly distributed data. The new interpolation function is capable of exactly reproducing quadratic surfaces. The new function is developed, through boolean sum theory, from Shepard's two dimensional interpolation functions and the Barnhill-Gre... | Computer-aided geometric design; CAGD; Barnhill-Gregory; Interpolation functions | 1975 |