Quadric tracing : a geometric method for accelerated sphere tracing of implicit surfaces

Bálint Csaba and Kiglics Mátyás: Quadric tracing : a geometric method for accelerated sphere tracing of implicit surfaces. In: Acta cybernetica, (25) 2. pp. 171-185. (2021)

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Abstract

Sphere tracing is a common raytracing technique used for rendering implicit surfaces defined by a signed distance function (SDF). However, these distance functions are often expensive to compute, prohibiting several real-time applications despite recent efforts to accelerate it. This paper presents a method to precompute a slightly augmented distance field that hugely accelerates rendering. This novel method called quadric tracing supports two configurations: (i) accelerating raytracing without losing precision, so the original SDF is still needed; (ii) entirely replacing the SDF and tracing an interpolated surface. Quadric tracing can offer 20% to 100% speedup in rendering static scenes and thereby amortizing the slowdown caused by the complexity of the geometry.

Item Type: Article
Journal or Publication Title: Acta cybernetica
Date: 2021
Volume: 25
Number: 2
ISSN: 0324-721X
Page Range: pp. 171-185
Language: English
Publisher: University of Szeged, Institute of Informatics
Place of Publication: Szeged
Event Title: Conference of PhD Students in Computer Science (12.) (2020) (Szeged)
Related URLs: http://acta.bibl.u-szeged.hu/75565/
DOI: 10.14232/actacyb.290007
Uncontrolled Keywords: Számítógépes grafika - geometria
Additional Information: Bibliogr.: p. 183-185. ; ill. ; összefoglalás angol nyelven
Subjects: 01. Natural sciences
01. Natural sciences > 01.02. Computer and information sciences
Date Deposited: 2022. May. 12. 13:46
Last Modified: 2022. May. 12. 13:46
URI: http://acta.bibl.u-szeged.hu/id/eprint/75604

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