Real‐time Anticipation of Occlusions for Automated Camera Control in Toric Space

Efficient visibility computation is a prominent requirement when designing automated camera control techniques for dynamic 3D environments; computer games, interactive storytelling or 3D media applications all need to track 3D entities while ensuring their visibility and delivering a smooth cinemati...

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Vydané v:Computer graphics forum Ročník 39; číslo 2; s. 523 - 533
Hlavní autori: Burg, L., Lino, C., Christie, M.
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Oxford Blackwell Publishing Ltd 01.05.2020
Wiley
Predmet:
Applied computing → Media arts
Automatic control
Automation
Cameras
CCS Concepts
Computer & video games
Computer Science
Computing methodologies → Rasterization
Interactive control
Occlusion
Procedural animation
Tracking
Visibility
Windows (intervals)
Applied computing → Media arts
Procedural animation
Computing methodologies → Rasterization
ISSN:0167-7055, 1467-8659
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Popis
Shrnutí:Efficient visibility computation is a prominent requirement when designing automated camera control techniques for dynamic 3D environments; computer games, interactive storytelling or 3D media applications all need to track 3D entities while ensuring their visibility and delivering a smooth cinematic experience. Addressing this problem requires to sample a large set of potential camera positions and estimate visibility for each of them, which in practice is intractable despite the efficiency of ray‐casting techniques on recent platforms. In this work, we introduce a novel GPU‐rendering technique to efficiently compute occlusions of tracked targets in Toric Space coordinates – a parametric space designed for cinematic camera control. We then rely on this occlusion evaluation to derive an anticipation map predicting occlusions for a continuous set of cameras over a user‐defined time window. We finally design a camera motion strategy exploiting this anticipation map to minimize the occlusions of tracked entities over time. The key features of our approach are demonstrated through comparison with traditionally used ray‐casting on benchmark scenes, and through an integration in multiple game‐like 3D scenes with heavy, sparse and dense occluders.
Bibliografia:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:0167-7055
1467-8659
DOI:10.1111/cgf.13949