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<!DOCTYPE html>
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<title> VR-GS: A Physical Dynamics-Aware Interactive Gaussian Splatting System in Virtual Reality </title>
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<h1 class="title is-1 publication-title">VR-GS: A Physical Dynamics-Aware Interactive Gaussian Splatting
System in Virtual Reality</h1>
<div class="is-size-5 publication-authors">
<span class="author-block">
<a href="https://yingjiang96.github.io/">Ying Jiang</a><sup>1,2*</sup>,</span>
<span class="author-block">
<a href="https://changyu.io/">Chang Yu</a><sup>1*</sup>,</span>
<span class="author-block">
<a href="https://xpandora.github.io/">Tianyi Xie</a><sup>1*</sup>,
</span>
<span class="author-block">
<a href="https://xuan-li.github.io/">Xuan Li</a><sup>1*</sup>,
</span>
<span class="author-block">
<a href="https://fytalon.github.io/">Yutao Feng</a><sup>3,4</sup>,
</span>
<span class="author-block">
<a href="https://wanghmin.github.io/">Huamin Wang</a><sup>5</sup>,
</span>
<span class="author-block">
<a href="https://www.cs.cmu.edu/~minchenl/">Minchen Li</a><sup>6</sup>,
</span>
<span class="author-block">
<a href="https://www.imse.hku.hk/people/h-y-k-lau">Henry Lau</a><sup>2</sup>,
</span>
<span class="author-block">
<a href="https://fen9.github.io/">Feng Gao</a><sup>7</sup>,
</span>
<span class="author-block">
<a href="https://yangzzzy.github.io/">Yin Yang</a><sup>3</sup>,
</span>
<span class="author-block">
<a href="https://www.math.ucla.edu/~cffjiang/">Chenfanfu Jiang</a><sup>1</sup>
</span>
</div>
<div class="is-size-5 publication-authors">
<span class="author-block"><sup>1</sup>UCLA,</span>
<span class="author-block"><sup>2</sup>HKU,</span>
<span class="author-block"><sup>3</sup>Utah,</span>
<span class="author-block"><sup>4</sup>ZJU,</span>
<span class="author-block"><sup>5</sup>Style3D Research,</span>
<span class="author-block"><sup>6</sup>CMU,</span>
<span class="author-block"><sup>7</sup>Amazon</span>
</div>
<div class="is-size-5 publication-authors">
<span class="author-block"><sup>*</sup>Equal Contributions</span>
</div>
<div class="is-size-5 publication-authors">
<span class="author-block">SIGGRAPH 2024</span>
</div>
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<h2 class="title is-3">Bear</h2>
<p>
VR-GS empowers users to interactive manipulate 3D Gaussian kernels at a real-time rate with physically plausible response and realistic illumination.
</p>
<br>
<!– <div class="col-md-8 col-md-offset-2"> –>
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<h2 class="subtitle has-text-centered">
VR-GS empowers users to interactive manipulate 3D Gaussian kernels at a real-time rate with physically plausible response and realistic illumination.
</h2>
</div>
</div>
</section>
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<h2 class="subtitle has-text-centered">
<span class="dnerf">Nerfies</span> turns selfie videos from your phone into
free-viewpoint
portraits.
</h2>
</div>
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</section> -->
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<h2 class="title is-3">Abstract</h2>
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<p>
As consumer Virtual Reality (VR) and Mixed Reality (MR) technologies gain momentum, there's a growing focus on the development
of engagements with 3D virtual content. Unfortunately, traditional techniques for content creation, editing,
and interaction within these virtual spaces are fraught with difficulties. They tend to be not only
engineering-intensive but also require extensive expertise, which adds to the frustration and inefficiency
in virtual object manipulation. Our proposed VR-GS system represents a leap forward in human-centered 3D content interaction, offering a
seamless and intuitive user experience. By developing a physical dynamics-aware interactive Gaussian Splatting in a
Virtual Reality setting, and constructing a highly efficient two-level embedding strategy alongside deformable
body
simulations, VR-GS ensures real-time execution with highly realistic dynamic responses. The components of our Virtual Reality system are designed for high efficiency and effectiveness, starting from
detailed scene reconstruction and object segmentation, advancing through multi-view image in-painting, and
extending to interactive physics-based editing. The system also incorporates real-time deformation
embedding and dynamic shadow casting, ensuring a comprehensive and engaging virtual experience.
</p>
</div>
</div>
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<h2 class="title is-3">Pipeline</h2>
<img src="./static/images/pipeline.jpg" class="interpolation-image" />
<p>
VR-GS is an interactive system meticulously crafted to integrate 3D Gaussian Splatting (GS) and eXtended Position-based
Dynamics(XPBD) for generating a real-time interactive experience in Virtual Reality (VR). Beginning with multi-view
images, the pipeline skillfully combines scene reconstruction, segmentation, and inpainting using Gaussian kernels.
These kernels form the foundation for VR-GS's utilization of the sparse volumetric data structure VDB,
facilitating bounding mesh reconstruction and subsequent tetrahedralization. VR-GS further harnesses a novel
two-level rendering geometry embedding, XPBD, collision detection, and shadow casting techniques,
all converging to deliver a captivating and immersive user experience.
</p>
</div>
</section>
<section class="section">
<div class="container is-max-desktop">
<div class="dance">
<video id="dance" controls muted preload playsinline autoplay loop width="100%">
<source src="./static/videos/dance.mp4"
type="video/mp4">
</video>
<h2 class="subtitle has-text-centered">
Generated dance in VR.
</h2>
</div>
</div>
</section>
<section class="section">
<div class="container is-max-desktop">
<div class="human">
<video id="human" controls muted preload playsinline autoplay loop width="100%">
<source src="./static/videos/human.mp4"
type="video/mp4">
</video>
<h2 class="subtitle has-text-centered">
Toss a ring over a human.
</h2>
</div>
</div>
</section>
<section class="section">
<div class="container is-max-desktop">
<div class="fox">
<video id="fox" controls muted preload playsinline autoplay loop width="100%">
<source src="./static/videos/fox.mp4"
type="video/mp4">
</video>
<h2 class="subtitle has-text-centered">
Pet a fox.
</h2>
</div>
</div>
</section>
<section class="section">
<div class="container is-max-desktop">
<div class="horse-body">
<video id="horse" controls muted preload playsinline autoplay loop width="100%">
<source src="./static/videos/horse.mp4"
type="video/mp4">
</video>
<h2 class="subtitle has-text-centered">
VR-GS enables users to interact with 3D Gaussian kernels at a user-friendly manner.
</h2>
</div>
</div>
</section>
<section class="section">
<div class="container is-max-desktop">
<div class="comparison-body">
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</video>
</div>
<h2 class="subtitle has-text-centered">
Visual Quality Comparison: our method synthesizes competitive visual results compared to PhysGuassian and significantly outperforms PAC-NeRF.
</h2>
</div>
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</section>
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<h2 class="title">BibTeX</h2>
<pre><code>@article{park2021nerfies,
author = {Park, Keunhong and Sinha, Utkarsh and Barron, Jonathan T. and Bouaziz, Sofien and Goldman, Dan B and Seitz, Steven M. and Martin-Brualla, Ricardo},
title = {Nerfies: Deformable Neural Radiance Fields},
journal = {ICCV},
year = {2021},
}</code></pre>
</div>
</section> -->
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<h2 class="title">BibTeX</h2>
<pre><code>@article{jiang2024vr-gs,
title={VR-GS: A Physical Dynamics-Aware Interactive Gaussian Splatting System in Virtual Reality},
author={Jiang, Ying and Yu, Chang and Xie, Tianyi and Li, Xuan and Feng, Yutao and Wang, Huamin and Li, Minchen and Lau, Henry and Gao, Feng and Yang, Yin and Jiang, Chenfanfu},
journal={arXiv preprint arXiv:2401.16663},
year={2024},
}</code></pre>
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