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Efficient Ray Tracing of Volume Data
https://web.cs.ucdavis.edu/~ma/ECS177/papers/levoy_raytrace_vol.pdf
Efficient Ray Tracing of Volume Data
https://www.cs.unc.edu/techreports/88-029.pdf
Efficient Ray Tracing of Volume Data Marc Levoy June, 1988 Computer Science Department University of North Carolina Chapel Hill, NC 27599 1 Volume rendering is a technique for visualizing sampled scalar functions of three spatial dimen sions without fitting geometric primitives to the data.
Efficient Ray Tracing of Volume Data
https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.141.7729&rep=rep1&type=pdf
present in the data, and the second technique uses an opacity threshold to adaptively terminate ray tracing. Although the actual time saved depends on the data, speedups of an order of magnitude have been observed for datasets of useful size and complexity. Examples from two applications are given: medical imaging and molecular graphics.
Efficient ray tracing of volume data | ACM Transactions …
https://dl.acm.org/doi/10.1145/78964.78965
This paper presents a front-to-back image-order volume-rendering algorithm and discusses two techniques for improving its performance. The first technique employs a pyramid of binary volumes to encode spatial coherence present in the data, and the second technique uses an opacity threshold to adaptively terminate ray tracing.
Notes on efficient ray tracing
https://graphics.stanford.edu/~boulos/papers/efficient_notes.pdf
Surface* data[nx][ny][nz]; you would pay very little cost in memory penalties for traversing in the z direction, but a very large cost for traversing in the x direction (and this only gets worse as your memory requirements increase). In ray tracing, and more so in path tracing, rays are bouncing in all sorts of directions. You could definitely ...
(PDF) Ray Tracing Volume Densities
https://www.researchgate.net/publication/234800181_Ray_Tracing_Volume_Densities
This paper presents new algorithms to trace. objects represented by densities within a volume grid, e.g. clouds, fog, flames, dust, particle systems. We develop the. light scattering equations ...
[PDF] Ray tracing volume densities | Semantic Scholar
https://www.semanticscholar.org/paper/Ray-tracing-volume-densities-Kajiya-Herzen/1daaace5526aeec3c2e099a5f2431ba48a2a43c0
Ray tracing volume densities. This paper presents new algorithms to trace objects represented by densities within a volume grid, e.g. clouds, fog, flames, dust, particle systems. We develop the light scattering equations, discuss previous methods of solution, and present a new approximate solution to the full three-dimensional radiative ...
Volumetric Ray Tracing - Drexel CCI
https://www.cs.drexel.edu/~david/Classes/Papers/p11-sobierajski.pdf
surface point along the ray, volumetric ray tracing may also require the illumination equation to be evaluated for a segment of the ray. Section 3 describes the different types and classes of intersection calculations used in vol.umetric ray tracing, as …
Interactive Ray Tracing for Volume Visualization
https://collections.lib.utah.edu/dl_files/18/6c/186cbf5c2020b1071e2a7a2c3a9307b3009fb6a7.pdf
Fig. 1. A ray traverses a volume looking for a specific or maximum value. No explicit surface or volume is computed. conventional ray tracing system. In this section, we review how ray tracers are used in visualization, and how they are implemented efficiently at a systems level. 2.1 Efficient Ray Tracing
High-Performance Ray Tracing - Computer Graphics
http://15462.courses.cs.cmu.edu/fall2016content/lectures/13_raytracing/13_raytracing_slides.pdf
Rasterization vs. ray casting Rasterization:-Proceeds in triangle order (never have to store in entire scene, naturally supports unbounded size scenes)-Store depth buffer (random access to regular structure of fixed size) Ray casting:-Proceeds in screen sample order-Never have to store depth buffer (just current ray)-Natural order for rendering transparent surfaces (process surfaces in the
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