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Practical Ray Tracing of Trimmed NURBS Surfaces
https://www.cs.utah.edu/gdc/publications/papers/raynurbs.pdf#:~:text=Ray%20tracing%20a%20NURBS%20surface%20proceeds%20in%20a,to%20generate%20the%20BVH%20and%20then%20is%20discarded.
Ray tracing of optical systems using NURBS surfaces
https://www.researchgate.net/publication/230965186_Ray_tracing_of_optical_systems_using_NURBS_surfaces
(a) NURBS representation of a wavy surface defined on a discrete mesh. (b) Spot produced by a mirror with the shape given in (a). The units are cm. Ray …
Practical Ray Tracing of Trimmed NURBS Surfaces
https://www.cs.utah.edu/gdc/publications/papers/raynurbs.pdf
A system is presented for ray tracing trimmed NURBS surfaces. While approaches to components are drawn largely from existing literature, their combination within a single framework is novel. This paper also differs from prior work in that the details of an efficient implementation are fleshed out. Throughout, emphasis is placed on practical ...
KeyShot 5: NURBS Raytracing - YouTube
https://www.youtube.com/watch?v=iZmrTkC-8ac
NURBS data import from your favorite modeling system delivers accurate geometry with smoother edges. NURBS import is currently available for all geometry for...
Direct NURBS Ray Tracing - YouTube
https://www.youtube.com/watch?v=-gGX1GP_d78
A short presentation of NUMENUS direct NURBS technology. This unique piece of software allows for the very fast visualization of NURBS surfaces without any k...
(PDF) Direct and fast ray tracing of NURBS surfaces
https://www.researchgate.net/publication/232644373_Direct_and_fast_ray_tracing_of_NURBS_surfaces
trimmed NURBS patches is still frequently causing problems as artifacts and long preprocessing times are introduced, whereas in- tegrating an online …
Plate Mode NURBS raytracing - BRL-CAD
https://brlcad.org/wiki/Plate_Mode_NURBS_raytracing
This task would be to implement plate mode raytracing for NURBS surfaces. Thin materials (such as those used for airplane skins) are a common modeling scenario for NURBS models. A student proposal on this topic would need demonstrate research into the various issues that arise when plate-mode raytracing is used and how to address them.
(PDF) Efficient Ray Tracing of Trimmed NURBS Surfaces
https://www.researchgate.net/publication/246034454_Efficient_Ray_Tracing_of_Trimmed_NURBS_Surfaces
Most of the modern raytracing based applications only deal with triangles as basic primiti ves, which brings limitations to an ap- plication and may cause visual artifacts to …
NURBS raytracing · Issue #77 · cihologramas/pyoptools · …
https://github.com/cihologramas/pyoptools/issues/77
1- The equation of the nurbs z=f (x,y) 2- The intersection point of the nurb and an arbitrary ray 3- The normal of the nurb surface at the intersection point. If you could help us with that, I can implement the nurbs surface in pyoptools fast. About your second question, yes it is possible to track a ray in the propagation.
Do anyone know how to raytrace NURBS of degree 2? - Stack Overflow
https://stackoverflow.com/questions/41466605/do-anyone-know-how-to-raytrace-nurbs-of-degree-2
The basic idea is to think of your ray as the intersection of two planes N . r = a, M . r = b. With N, M normal vectors to the planes, a, b constants. If r = R (u,v) is you NURB function. This gives you two equations in two variables to solve. This is where I'm a little unsure.
A new method for speeding up ray tracing NURBS surfaces
https://www.sciencedirect.com/science/article/pii/S0097849397872639
The method proposed for speeding tip ray tracing NURBS surfaces can reduce both the iteration steps and arithmetic operations, thus much CPU time is saved. The new method is faster than the previous methods for which published …
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