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Interactive k-D Tree GPU Raytracing - Stanford …
https://graphics.stanford.edu/papers/i3dkdtree/gpu-kd-i3d.pdf
KD-Tree Acceleration Structures for a GPU Raytracer
https://graphics.stanford.edu/papers/gpu_kdtree/kdtree.pdf
scenes and determines that the kd-tree is the best general-purpose acceleration structure for CPU raytracers. It would seem natural, therefore, to try to use a kd-tree to accelerate GPU raytracing. As we will describe in section 2 though, the standard algorithm for kd-tree traversal relies on a per-ray dynamic stack. Ernst et al. [EVG04 ...
KD tree optimization for path tracing - GitHub
https://github.com/reddeupenn/kdtreePathTracerOptimization
Using a K-D Tree to represent the triangles reduces the overall complexity of the lookup and the time needed to find the intersecting triangles. There is a cost of computation for generating the KD-Tree but in most cases the scene is mostly static geometry which should benefit from this data structure. (image from wikipedia) Path tracing hurdles.
KD-Tree traversal (raytracing) - am I missing a case?
https://stackoverflow.com/questions/1852391/kd-tree-traversal-raytracing-am-i-missing-a-case
The Tree is correct, but there seems to be something wrong with my traversal algorithm since I'm getting some errors compared to using a brute-force approach (some small surface areas seem to get ignored). Note: none of the rays in …
kd trees, ray tracing - Graphics and GPU Programming
https://www.gamedev.net/forums/topic/605183-kd-trees-ray-tracing/
1,119. June 29, 2011 01:43 PM. A big advantage of kD-trees (over BVH for example) is that you don't need to store the whole bounding box (that is 6 floats) but just a single float for the plane position (in case of implicit directions), or a single float and 2 bits for the plane direction/axis. You will not need to test your rays against the ...
Review: Kd-tree Traversal Algorithms for Ray Tracing
https://dcgi.fel.cvut.cz/home/havran/ARTICLES/cgf2011.pdf
Graphics and Realism—Ray Tracing Keywords: kd-tree, ray tracing, traversal algorithm 1. Introduction Many rendering algorithms aiming at high quality images are based on ray tracing [App68], i.e. finding the primitives along the oriented half-line or along a line segment which provides the means to propagate or gather energy in the scene.
KD-TREE BASED FAST RAY TRACING FOR RCS PREDICTION …
https://www.jpier.org/PIER/pier81/22.08011305.pdf
KD-TREE BASED FAST RAY TRACING FOR RCS PREDICTION Y. B. Tao, H. Lin, and H. J. Bao StateKeyLaboratoryofCAD&CG ZhejiangUniversity Hangzhou310027,P.R.China Abstract—Ray tracing is of great use for computational electro-magnetics, such as the well-known shooting and bouncing ray (SBR) method. In this paper, the kd-tree data structure, coupled ...
Ray Trace 3.0 - University of California, San Diego
https://www.math.ucsd.edu/~sbuss/MathCG/RayTrace/raytrace_3.0_intro.html
Using the kd-tree acceleration structures. The method of using the kd-tree acceleration structures is illustrated in RayTraceKd.cpp. The kd-tree code is written with a very general interface so it can be used by a variety of applications. If you are just using the RayTrace software for ray tracing, you can just use the code in RayTraceKd.cpp.
Kd tree for triangle meshes is too slow - Stack Overflow
https://stackoverflow.com/questions/20019110/kd-tree-for-triangle-meshes-is-too-slow
When ray-tracing a bunny of 5500 triangles, there are a lot of leaf nodes of 1 triangle and the last leaf node still contains 762 triangles. Is there a better partitioning algorithm (because mine is just an implementation of a Kd tree for single points converted to surfaces), that balances the tree?
B-KD Trees for Hardware Accelerated Ray Tracing of Dynamic …
http://www.graphicshardware.org/previous/www_2006/presentations/woop-B-KD-Trees-GH06.pdf
10 B-KD Tree Construction • If #primitives > 1 then • Compute center of mass • Sort geometry along all three dimensions • Partitionings can be determined by splitting a list at a position • Build all possible partitionings in all three dimensions • Find the partitioning with smallest SAH cost • Create node and recurse • Else if #primitives = 1 then
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