UBVH: Unified Bounding Volume and Scene Geometry Representation for Ray Tracing

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dc.contributor.authorKácerik, Martinen_US
dc.contributor.authorBittner, Jiríen_US
dc.contributor.editorKnoll, Aaronen_US
dc.contributor.editorPeters, Christophen_US
dc.date.accessioned2025-06-20T07:32:32Z
dc.date.available2025-06-20T07:32:32Z
dc.date.issued2025
dc.description.abstractBounding volume hierarchies (BVHs) are currently the most common data structure used to accelerate ray tracing. The existing BVH methods distinguish between the bounding volume representation associated with the interior BVH nodes and the scene geometry representation associated with leaf nodes. We propose a new method that unifies the representation of bounding volumes and triangular scene geometry. Our unified representation builds on skewed oriented bounding boxes (SOBB) that yield tight bounds for interior nodes and precise representation for triangles in the leaf nodes. This innovation allows to streamline the conventional massively parallel BVH traversal, as there is no need to switch between testing for ray intersection in interior nodes and leaf nodes. The results show that the proposed method accelerates ray tracing of incoherent rays between 1.2x-11.8x over the AABB BVH, 1.4x-4.2x over the 14-DOP BVH, 1.1x-2.0x over the OBB BVH, and by 1.1x-1.7x over the SOBB BVH.en_US
dc.description.number8
dc.description.sectionheadersBounding Volume Hierarchies
dc.description.seriesinformationComputer Graphics Forum
dc.description.volume44
dc.identifier.doi10.1111/cgf.70216
dc.identifier.issn1467-8659
dc.identifier.pages10 pages
dc.identifier.urihttps://doi.org/10.1111/cgf.70216
dc.identifier.urihttps://diglib.eg.org/handle/10.1111/cgf70216
dc.publisherThe Eurographics Association and John Wiley & Sons Ltd.en_US
dc.rightsAttribution 4.0 International License
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectCCS Concepts: Computing methodologies → Ray tracing; Massively parallel algorithms
dc.subjectComputing methodologies → Ray tracing
dc.subjectMassively parallel algorithms
dc.titleUBVH: Unified Bounding Volume and Scene Geometry Representation for Ray Tracingen_US
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