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Cinematic Virtual Reality with Head-...

Thatte, Jayant.

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Cinematic Virtual Reality with Head-Motion Parallax.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Cinematic Virtual Reality with Head-Motion Parallax./
作者:	Thatte, Jayant.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
面頁冊數:	165 p.
附註:	Source: Dissertations Abstracts International, Volume: 82-10, Section: B.
Contained By:	Dissertations Abstracts International82-10B.
標題:	Augmented reality. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28354084
ISBN:	9798597043371

Cinematic Virtual Reality with Head-Motion Parallax.
Thatte, Jayant.

Cinematic Virtual Reality with Head-Motion Parallax. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 165 p.

Source: Dissertations Abstracts International, Volume: 82-10, Section: B.

Thesis (Ph.D.)--Stanford University, 2020.

This item must not be sold to any third party vendors.

Even as virtual reality has rapidly gained popularity over the past decade, visual fatigue, imperfect sense of immersion, and nausea remain significant barriers to its wide adoption. A key cause of this discomfort is the failure of the current technology to render accurate perspective changes or parallax resulting from the viewer's head motion. This mismatch induces a visual-vestibular conflict. Moreover, rendering accurate head-motion parallax is essential for making the computer-generated experience immersive and more like reality. The lack of this perceptual cue degrades the feeling of presence and makes the overall experience less compelling. This work addresses the issue by proposing an end-to-end framework that can capture, store, and render natural scenery with accurate head-motion parallax.At the core of the problem is the trade-off between storing enough scene information to facilitate fast, high-fidelity rendering of head-motion parallax and keeping the representation compact enough to be practically viable. In this regard, we explore several novel scene representations, compare them with qualitative and quantitative evaluations, and discuss their advantages and disadvantages. We demonstrate the practical applicability of the proposed representations by developing an end-to-end virtual reality system that can render real-time head-motion parallax for natural environments. To that end, we build a two-level camera rig and present an algorithm to construct the proposed representations using the images captured by our camera system. Furthermore, we develop a custom OpenGL renderer that uses the constructed intermediate representations to synthesize full-resolution, stereo frames in a head-mounted display, updating the rendered perspective in real-time based on the viewer's head position and orientation. Finally, we propose a theoretical model for understanding the disocclusion behavior in depth-based novel-view synthesis and analyze the impact of the choice of intermediate representation and camera geometry on the synthesized views in terms of quantitative image quality metrics and the occurrence of disocclusion holes.

ISBN: 9798597043371Subjects--Topical Terms:

1620831
Augmented reality.
Subjects--Index Terms:

Head motion

Cinematic Virtual Reality with Head-Motion Parallax.
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520 $a Even as virtual reality has rapidly gained popularity over the past decade, visual fatigue, imperfect sense of immersion, and nausea remain significant barriers to its wide adoption. A key cause of this discomfort is the failure of the current technology to render accurate perspective changes or parallax resulting from the viewer's head motion. This mismatch induces a visual-vestibular conflict. Moreover, rendering accurate head-motion parallax is essential for making the computer-generated experience immersive and more like reality. The lack of this perceptual cue degrades the feeling of presence and makes the overall experience less compelling. This work addresses the issue by proposing an end-to-end framework that can capture, store, and render natural scenery with accurate head-motion parallax.At the core of the problem is the trade-off between storing enough scene information to facilitate fast, high-fidelity rendering of head-motion parallax and keeping the representation compact enough to be practically viable. In this regard, we explore several novel scene representations, compare them with qualitative and quantitative evaluations, and discuss their advantages and disadvantages. We demonstrate the practical applicability of the proposed representations by developing an end-to-end virtual reality system that can render real-time head-motion parallax for natural environments. To that end, we build a two-level camera rig and present an algorithm to construct the proposed representations using the images captured by our camera system. Furthermore, we develop a custom OpenGL renderer that uses the constructed intermediate representations to synthesize full-resolution, stereo frames in a head-mounted display, updating the rendered perspective in real-time based on the viewer's head position and orientation. Finally, we propose a theoretical model for understanding the disocclusion behavior in depth-based novel-view synthesis and analyze the impact of the choice of intermediate representation and camera geometry on the synthesized views in terms of quantitative image quality metrics and the occurrence of disocclusion holes.
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650 4 $a Acoustics. $3 879105
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