Combined volume and surface rendering with global illumination caching

Šmajdek, Uroš (avtor), Lesar, Žiga (avtor), Marolt, Matija (avtor), Bohak, Ciril (avtor)

We present a combined volume and surface rendering technique with global illumination caching. Our approach uses volumetric path tracing to compute the global illumination volume and local shading models for rendering the isosurface. By joining both visualization approaches, we have enhanced the display and illumination of the surfaces while preserving physically realistic illumination of the participating media. To achieve real-time performance and avoid recomputing the image when the camera view changes, we compute the global illumination volume incrementally and defer the projection to a later step. We evaluated our technique by comparing different local shading models for isosurface rendering with the result of full volumetric path tracing and with the non-caching variant of our technique. Results show that the caching and non-caching variants perform comparably well, while the caching variant has the added benefit of being camera-view-independent. Additionally, we show that our approach emphasizes the surfaces within volumes better than volumetric path tracing.

• Jezik: Angleški jezik
• Ključne besede: irradiance caching, global illumination, volumetric data
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FRI - Fakulteta za računalništvo in informatiko
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2024
• Št. strani: Str. 2491–2503
• Številčenje: Vol. 40, iss. 4
• PID: 20.500.12556/RUL-148270
• UDK: 004
• ISSN pri članku: 0178-2789
• DOI: 10.1007/s00371-023-02932-9
• COBISS.SI-ID: 157669379
• Datum objave v RUL: 09.08.2023

Gradivo je del revije

• Naslov: The visual computer
• Skrajšan naslov: Vis. comput.
• Založnik: Springer Nature
• ISSN: 0178-2789
• COBISS.SI-ID: 26606080

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: medpomnjenje obsevanja, globalna osvetlitev, volumetrični podatki