Quadric tracing a geometric method for accelerated sphere tracing of implicit surfaces /
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...
Elmentve itt :
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Testületi szerző: | |
Dokumentumtípus: | Cikk |
Megjelent: |
University of Szeged, Institute of Informatics
Szeged
2021
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Sorozat: | Acta cybernetica
25 No. 2 |
Kulcsszavak: | Számítógépes grafika - geometria |
Tárgyszavak: | |
doi: | 10.14232/actacyb.290007 |
Online Access: | http://acta.bibl.u-szeged.hu/75604 |
Tartalmi kivonat: | 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. |
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Terjedelem/Fizikai jellemzők: | 171-185 |
ISSN: | 0324-721X |