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FOLAR: A FOggy-LAser Rendering Method for Interaction in Virtual Reality
KTH, School of Electrical Engineering and Computer Science (EECS).
2020 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
FOLAR: En FOggy-LAser Rendering Metod för Interaktion i Virtual Reality (Swedish)
Abstract [en]

Current commercial Virtual Reality (VR) headsets give viewers immersion in virtual space with stereoscopic graphics and positional tracking. Developers can create VR applications in a working pipeline similar to creating 3D games using game engines. However, the characteristics of VR headsets give disadvantages to the rendering technique particle system with billboard sprites. In our study, we propose a rendering technique called FOggy-LAser Rendering method (FOLAR), which renders realistic laser in fog on billboard sprites. With this method, we can compensate for the disadvantages of using particle systems and still render the graphics in interactive performance for VR. We studied the characteristics of this method by performance benchmarks and comparing the rendered result to a baseline ray-casting method. User study and image similarity metrics are involved in the comparison study. As a result, we observed a satisfying performance and a similar rendering result compared to ray-casting. However, the user study still shows a significant difference in the rendered result between methods. These results imply that FOLAR is an acceptable method for its performance and ness in the rendered result, but still have inevitable trade-offs‌‌‌ in the graphics.

Abstract [sv]

Nuvarande kommersiella Virtual Reality (VR) headset ger användare immersion i virtuellt utrymme med stereoskopisk grafik och positionsspårning. Utvecklare kan skapa VR-applikationer i en fungerande pipeline på ett liknande sätt som att skapa 3D-spel med hjälp av spelmotorer. Egenskaperna hos VR-headset ger emellertid nackdelar med renderingstekniken av billboard sprite partikelsystem. I vår studie föreslår vi en renderingsteknik som kallas FOggy-LAser Rendering method (FOLAR), som renderar realistiska lasrar i dimma på billboard sprites. Med denna metod kan vi kompensera för nackdelarna med att använda partikelsystem och fortfarande göra grafiken i interaktiv prestanda för VR. Vi studerade egenskaperna hos denna metod genom prestanda benchmarks och jämförde renderade resultatet med en baseline ray-cast metod. Användarstudie och image similarity mätvärden är involverade i jämförelsestudien. Som resultat observerade vi en tillfredsställande prestanda och liknande renderings resultat jämfört med ray-casting. Dock visar användarstudien fortfarande en signifikant skillnad i det gjorda resultaten mellan metoderna. Dessa resultat pekar på att FOLAR är en acceptabel metod för dess prestanda och korrekthet i det renderade resultatet, men har fortfarande oundvikliga avvägningar i grafiken.

Place, publisher, year, edition, pages
2020.
Series
TRITA-EECS-EX ; 2020:15
Keywords [en]
Computer Graphics, Volumetric Rendering, Virtual Reality, Particle System, Participating Media, Illumination, Real-time Rendering
National Category
Computer and Information Sciences
Identifiers
URN: urn:nbn:se:kth:diva-271613OAI: oai:DiVA.org:kth-271613DiVA, id: diva2:1420642
Educational program
Master of Science - Computer Science
Supervisors
Examiners
Available from: 2020-04-01 Created: 2020-03-31 Last updated: 2022-06-26Bibliographically approved

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CiteExportLink to record
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Citation style
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