Enhanced Sphere Tracing

dc.contributor.authorKeinert, Benjaminen_US
dc.contributor.authorSchäfer, Henryen_US
dc.contributor.authorKorndörfer, Johannen_US
dc.contributor.authorGanse, Ursen_US
dc.contributor.authorStamminger, Marcen_US
dc.contributor.editorAndrea Giachettien_US
dc.date.accessioned2014-12-16T07:17:30Z
dc.date.available2014-12-16T07:17:30Z
dc.date.issued2014en_US
dc.description.abstractIn this paper we present several performance and quality enhancements to classical sphere tracing: First, we propose a safe, over-relaxation-based method for accelerating sphere tracing. Second, a method for dynamically preventing self-intersections upon converting signed distance bounds enables controlling precision and rendering performance. In addition, we present a method for significantly accelerating the sphere tracing intersection test for convex objects that are enclosed in convex bounding volumes. We also propose a screen-space metric for the retrieval of a good intersection point candidate, in case sphere tracing does not converge thus increasing rendering quality without sacrificing performance. Finally, discontinuity artifacts common in sphere tracing are reduced using a fixed-point iteration algorithm. We demonstrate complex scenes rendered in real-time with our method. The methods presented in this paper have more universal applicability beyond rendering procedurally generated scenes in real-time and can also be combined with path-tracing-based global illumination solutions.en_US
dc.description.seriesinformationSmart Tools and Apps for Graphics - Eurographics Italian Chapter Conferenceen_US
dc.identifier.isbn978-3-905674-72-9en_US
dc.identifier.urihttps://doi.org/10.2312/stag.20141233en_US
dc.publisherThe Eurographics Associationen_US
dc.subjectI.3.5 [Computer Graphics]en_US
dc.subjectCurveen_US
dc.subjectsurfaceen_US
dc.subjectsoliden_US
dc.subjectand object representationsen_US
dc.subjectGeometric algorithmsen_US
dc.subjectlanguagesen_US
dc.subjectand systemsen_US
dc.subjectI.3.7 [Computer Graphics]en_US
dc.subjectThreeen_US
dc.subjectDimensional Graphics and Realismen_US
dc.subjectColoren_US
dc.subjectshadingen_US
dc.subjectshadowingen_US
dc.subjectand textureen_US
dc.titleEnhanced Sphere Tracingen_US
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