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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