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Sphere Tracing: A Geometric Method …
https://graphics.stanford.edu/courses/cs348b-20-spring-content/uploads/hart.pdf
Sphere Tracing: The Hart's Way - scratchapixel.com
https://www.scratchapixel.com/lessons/3d-basic-rendering/rendering-distance-fields
It is hard to know exactly who and when the technique was introduced to the CG community, but in 1996, John Hart published an important paper on this topic entitled Sphere Tracing: A Geometric Method for the Antialiased Ray Tracing of Implicit Surfaces.
Sphere tracing: A geometric method for the antialiased …
https://experts.illinois.edu/en/publications/sphere-tracing-a-geometric-method-for-the-antialiased-ray-tracing
Abstract Sphere tracing is a new technique for rendering implicit surfaces that uses geometric distance. Sphere tracing marches along the ray toward its first intersection in steps guaranteed not to penetrate the implicit surface. It is particularly adept at rendering pathological surfaces.
Sphere tracing: a geometric method for the antialiased …
https://link.springer.com/article/10.1007/s003710050084
Sphere tracing: a geometric method for the antialiased ray tracing of implicit surfaces John C. Hart The Visual Computer 12 , 527–545 ( 1996) Cite this article 525 Accesses 142 Citations 4 Altmetric Metrics Download to read the full article text Author information Affiliations
Sphere Tracing: A Geometric Method for the Antialiased …
https://citeseer.ist.psu.edu/viewdoc/summary?doi=10.1.1.48.3825
author = {John C. Hart}, title = {Sphere Tracing: A Geometric Method for the Antialiased Ray Tracing of Implicit Surfaces}, journal = {The Visual Computer}, year = {1994}, volume = {12}, pages = {527--545} } Share OpenURL Abstract Sphere tracing is a new technique for rendering implicit surfaces using geometric distance.
Accelerating Sphere Tracing
https://people.inf.elte.hu/csabix/publications/articles/WSPS_2019_Poster.pdf
Sphere tracing is an efficient algorithm by Hart in [1] used to visualize surfaces defined implicitly byadistancefunction. Keinertetal. [2]presentedafasteralgorithmviarelaxationoftheoriginal, anditwaslaterusedinClaybook[3]toimplementareal-timesimulationbasedcomputergame.
(PDF) Ray Tracing Implicit Surfaces | John C. Hart
https://www.academia.edu/es/156802/Ray_Tracing_Implicit_Surfaces
The LG-surface ray intersection method is given in Figure 11. 5.2 Sphere Tracing Sphere tracing was frst developed in [Hart et al., 1989] as a method for ray tracing deter- ministic fractals given an estimate of distance.
John C. Hart CS 418 Interactive Computer Graphics
https://courses.physics.illinois.edu/cs418/fa2018/slides/09-2%20Ray%20Tracing.pdf
• TraceRay(r = (o,d)) returns the intensity of light arriving at the ray anchor o in the opposite direction (-d) • Invoked with ray parameter only – Better if object database is global – Best if TraceRay is a member function of object
What is Ray Marching? Is Sphere Tracing the same thing?
https://computergraphics.stackexchange.com/questions/161/what-is-ray-marching-is-sphere-tracing-the-same-thing?rq=1
Sphere tracing Sphere tracing is one possible Ray marching algorithm. Not all raymarching uses benefit form this method, as they can not be converted into this kind of scheme. Sphere tracing is used for rendering implicit surfaces. Implicit surfaces are formed at some level of a continuous function. In essence solving the equation F(X,Y,Z) = 0
(PDF) Hyper-rendering of hyper-textured surfaces | John …
https://www.academia.edu/es/156776/Hyper_rendering_of_hyper_textured_surfaces
Sphere tracing is both guaranteed and eu000ecient, saving signifcant time by leaping over large empty regions far from the implicit surface. The sequence converges to the smallest positive zero of g if and only if the ray intersects the implicit surface.
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