UScholar Works
 
Filters: Collection: "ir_uspace" Subject: "Ray tracing"
1 - 25 of 18
Number of results to display per page
CreatorTitleDescriptionSubjectDate
1 Hansen, Charles D.Binary-swap volumetric rendering on the T3DThis 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 rendering1995
2 Johnson, Christopher R.; Parker, Steven G.; Whitaker, Ross T.; Hansen, Charles D.Computational field visualizationToday, scientists, engineers, and medical researchers routinely use computers to simulate complex physical phenomena. Such simulations present new challenges for computational scientists, including the need to effectively analyze and visualize complex three-dimensional data. As simulations become mo...Volume rendering; Isosurface extraction; Ray tracing; Multi-field visualizations2001
3 Hansen, Charles D.Data distributed, parallel algorithm for ray-traced volume renderingThis 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 processing1993
4 Hansen, Charles D.Data distributed, parallel algorithm for ray-traced volume renderingThis 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 processing1993
5 Parker, Steven G.; Hansen, Charles D.Distributed interactive ray tracing for large volume visualizationWe have constructed a distributed parallel ray tracing system that interactively produces isosurface renderings from large data sets on a cluster of commodity PCs. The program was derived from the SCI Institute's interactive ray tracer (*-Ray), which utilizes small to large shared memory platforms, ...Ray tracing; Volume rendering; Large data; Cluster computing; Distributed shared memory2003
6 Hansen, Charles D.Fast stereoscopic images with ray-traced volume renderingOne of the drawbacks of standard volume rendering techniques is that it is often difficult to comprehend the three-dimensional structure of the volume from a single frame; this is especially true in cases where there is no solid surface. Generally, several frames must be generated and viewed sequent...Volume rendering; Ray tracing; Stereoscopic images; Reprojection1994
7 Kopta, Daniel M.; Kensler, Andrew Erin; Spjut, Josef Bo; Brunvand, Erik L.; Davis, AlFast, effective BVH updates for dynamic ray-traced scenes using tree rotationsBounding 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 update2011
8 Wald, Ingo; Shirley, Peter S.Geometric and arithmetic culling methods for entire ray packetsRecent interactive ray tracing performance has been mainly derived from the use of ray packets. Larger ray packets allow for significant amortization of both computations and memory accesses; however, the majority of primitives are still intersected by each ray in a packet. This paper discusses ...Ray tracing; Interval arithmetic; Ray packets; Frustum culling2006-08-16
9 Parker, Steven G.; Hansen, Charles D.; Shirley, Peter S.Interactive ray tracing for volume visualizationWe 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 optimizations1999
10 Parker, Steven G.Massively parallel software rendering for visualizing large-scale data setsFor some time, researchers have done production visualization almost exclusively using high-end graphics workstations. They routinely archived and analyzed the outputs of simulations running on massively parallel supercomputers. Generally, a feature extraction step and a geometric modeling step t...Parallel rendering; Volume rendering; Ray tracing; Isosurfacing2001
11 Parker, Steven G.Memory sharing for interactive ray tracing on clustersWe 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 rendering2005-02
12 Hansen, Charles D.Parallel lumigraph reconstructionThis paper presents three techniques for reconstructing Lumigraphs/Lightfields on commercial ccNUMA parallel distributed shared memory computers. The first method is a parallel extension of the software-based method proposed in the Lightfield paper. This expands the ray/two-plane intersection test a...Lumigraph; Lightfield; Illumination; Parallel reconstruction; Ray tracing1999
13 Parker, Steven G.; Hansen, Charles D.; Shirley, Peter S.Parallel methods for isosurface visualizationisosurface 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 data1999
14 Hansen, Charles D.; Shirley, Peter S.Parallel point reprojectionImprovements 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 an...Point reprojection; Ray tracing2001
15 Shirley, Peter S.Parallel point reprojectionImprovements 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 cache2001
16 Parker, Steven G.Practical global illumination for interactive particle visualizationParticle-based simulation methods are used to model a wide range of complex phenomena and to solve time-dependent problems of various scales. Effective visualizations of the resulting state will communicate subtle changes in the three-dimensional structure, spatial organization, and qualitative tren...Interactive particle visualization; Global illumination; Ray tracing; Luminance textures2008-02
17 Shirley, Peter S.; Parker, Steven G.Single sample soft shadowsA simple extension to ray tracing is presented that creates visually plausible "soft" shadows with little extra computation. Although these soft shadows are approximate, they are robust and have penumbra widths that behave in a believable way, including accurate placement of singularities where penu...Soft shadows; Ray tracing; Penumbra width; Image generation1998
18 Shirley, Peter S.; Parker, Steven G.Towards interactive global illumination effects via sequential Monte Carlo adaptationThis paper presents a novel method that effectively combines both control variates and importance sampling in a sequential Monte Carlo context while handling general single-bounce global illumination effects. The radiance estimates computed during the rendering process are cached in an adaptive per...Ray tracing; Illumination; Monte Carlo methods2008
1 - 25 of 18