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Cone tracing - Wikipedia
https://en.wikipedia.org/wiki/Cone_tracing#:~:text=From%20Wikipedia%2C%20the%20free%20encyclopedia%20Cone%20tracing%20and,which%20have%20no%20thickness%2C%20with%20thick%20rays.%20Contents
Cone tracing - Wikipedia
https://en.wikipedia.org/wiki/Cone_tracing
Global Illumination Using Voxel Cone Tracing – Andrew Pham
https://andrew-pham.blog/2019/07/29/voxel-cone-tracing/
direction = 0.7071f * N + 0.7071f * T; Lo += coneTrace (direction, aperture); // Rotate the tangent vector about the normal using the 5th roots of unity to obtain the subsequent diffuse cone directions. direction = 0.7071f * N + 0.7071f * (0.309f * T + 0.951f * B); Lo += coneTrace (direction, aperture);
Cone Tracing for Furry Object Rendering - PubMed
https://pubmed.ncbi.nlm.nih.gov/26357369/
Abstract. We present a cone-based ray tracing algorithm for high-quality rendering of furry objects with reflection, refraction and defocus effects. By aggregating many sampling rays in a pixel as a single cone, we significantly reduce the high supersampling rate required by the thin geometry of fur fibers. To reduce the cost of intersecting fur fibers with cones, we construct a bounding …
Real-time Global Illumination Using Voxel Cone Tracing
https://prantare.files.wordpress.com/2016/12/frepr183_voxel_cone_tracing.pdf
voxelization and cone tracing. The direct lighting of a scene is voxelized in real-time using the GPU hardware rasterizer. The voxelized lighting is represented using a 3D texture, and ltered linearly using a 3D mipmap-ping scheme. Voxel cones are then traced throughout the di …
Voxel Cone Traced Global Illumination – Leif Node
http://leifnode.com/2015/05/voxel-cone-traced-global-illumination/
Cone tracing is a way to approximate the result of casting many rays into a scene with a distribution on a lobe. This is done by taking samples along a ray, but as the samples get further from the ray origin the sampled mip map level increases.
Interactive Indirect Illumination Using Voxel Cone Tracing
https://www.youtube.com/watch?v=fAsg_xNzhcQ
We present a novel algorithm to compute indirect lighting in real-time that avoids costly precomputation steps and is not restricted to low frequency illumin...
Ray Tracing with Cones - York University
http://www.cs.yorku.ca/~amana/research/cones.pdf
Ray Tracing with Cones. John Amanatides Department of Computer Science University of Toronto Toronto, Canada M5S 1A4 Abstract A new approach to ray tracing is intro- duced. The definition of a "ray" is extended into a cone by including information on the spread angle and the virtual origin. The advantages of this approach, which tries to model light propagation with more …
Voxel Cone Tracing and Sparse Voxel Octree for Real-time …
https://on-demand.gputechconf.com/gtc/2012/presentations/SB134-Voxel-Cone-Tracing-Octree-Real-Time-Illumination.pdf
Rendering algorithm . 1. Light pass (es) Bake irradiance (RSM) 2. Filtering pass Down-sample radiance in the octree 3. Camera pass For each visible fragment: Gather indirect radiance . Diffuse cones . l . ... SB134-Voxel-Cone-Tracing-Octree-Real-Time-Illumination Created Date:
Dose Calculation Algorithms - Oncology Medical Physics
https://oncologymedicalphysics.com/dose-calculation-algorithms/
What is Ray Tracing? Ray tracing algorithms are used in kernel based dose calculation algorithms to transport energy from the radiation source through the patient/phantom data set. ... If these patches are projected to the center of the ball, each forms a cone. CCC turns each of these cones into a single ray which may be ray traced to deposit dose.
RAYSTATION DOSE CALCULATION ALGORITHMS
https://www.raysearchlabs.com/siteassets/about-overview/media-center/wp-re-ev-n-pdfs/white-papers/white-paper-7---dose-calculation-aug-2015.pdf
The clinical dose engine for photons is called CC (Collapsed Cone). During optimization, a simplified dose engine called SVD (Singular Value Decomposition) is used. The two engines also use different fluence calculation engines. Sphere point kernel discretization CC This engine is based on the well-known principles of collapsed cone
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