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...

Teljes leírás

Elmentve itt :
Bibliográfiai részletek
Szerzők: Bálint Csaba
Kiglics Mátyás
Testületi szerző: Conference of PhD Students in Computer Science (12.) (2020) (Szeged)
Dokumentumtípus: Cikk
Megjelent: University of Szeged, Institute of Informatics Szeged 2021
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
Leíró adatok
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.
Terjedelem/Fizikai jellemzők:171-185
ISSN:0324-721X