VRSplat: Fast and Robust Gaussian Splatting for Virtual Reality

📄 arXiv: 2505.10144v1 📥 PDF

作者: Xuechang Tu, Lukas Radl, Michael Steiner, Markus Steinberger, Bernhard Kerbl, Fernando de la Torre

分类: cs.GR, cs.CV

发布日期: 2025-05-15

备注: I3D'25 (PACMCGIT); Project Page: https://cekavis.site/VRSplat/

期刊: Proc. ACM Comput. Graph. Interact. Tech., volume 8(1), May 2025


💡 一句话要点

提出VRSplat以解决虚拟现实中的高效高质量渲染问题

🎯 匹配领域: 支柱三:空间感知与语义 (Perception & Semantics)

关键词: 虚拟现实 高斯点云 光栅化 实时渲染 用户体验 GPU优化 深度评估

📋 核心要点

  1. 现有3D高斯点云渲染技术在虚拟现实中面临时间伪影、投影失真和帧率降低等关键挑战。
  2. VRSplat通过结合Mini-Splatting、StopThePop和Optimal Projection等技术,提出了一种高效的光栅化方法,优化了GPU的计算效率。
  3. 实验结果表明,VRSplat在用户体验上优于其他Mini-Splatting配置,达到了72+ FPS的高帧率,消除了伪影和立体干扰。

📝 摘要(中文)

3D高斯点云渲染(3DGS)已成为新视角合成的领先技术,通过高效的软件GPU光栅化实现卓越性能。然而,在虚拟现实(VR)中,3DGS面临时间伪影、投影失真和渲染帧率降低等挑战。本文提出VRSplat,结合并扩展了多项3DGS的最新进展,全面解决VR中的这些问题。我们展示了Mini-Splatting、StopThePop和Optimal Projection之间的互补关系,并提出了一种高效的注视光栅化器,优化了GPU的利用率。通过对25名参与者的用户研究验证,我们的结果显示VRSplat在消除伪影和立体干扰的同时,支持现代VR应用,达到了72+ FPS的表现。

🔬 方法详解

问题定义:本文旨在解决3D高斯点云渲染在虚拟现实应用中出现的时间伪影、投影失真和低帧率等问题。这些问题在大视场、快速头部运动和高分辨率头戴显示器下尤为明显。

核心思路:VRSplat通过结合多种先进技术,提出了一种新的光栅化方法,旨在提高渲染效率和视觉质量。通过优化算法设计,减少冗余计算,提升GPU利用率。

技术框架:VRSplat的整体架构包括多个模块,首先是对Mini-Splatting和StopThePop的改进,然后是引入高效的注视光栅化器,最后通过深度评估优化高斯参数。

关键创新:VRSplat的主要创新在于其系统性地整合了多种技术,首次实现了高效的3DGS方法,能够支持现代VR应用,显著提高了帧率并消除了伪影。

关键设计:在设计中,VRSplat采用了一种高效的注视光栅化器,能够在单次GPU启动中处理焦点和周边区域,避免了重复计算,同时结合了StopThePop的深度评估和Optimal Projection进行高斯参数的优化。

🖼️ 关键图片

fig_0
fig_1
fig_2

📊 实验亮点

实验结果显示,VRSplat在用户研究中获得了25名参与者的强烈偏好,相较于其他Mini-Splatting配置,VRSplat实现了72+ FPS的高帧率,成功消除了伪影和立体干扰,显著提升了用户体验。

🎯 应用场景

VRSplat的研究成果在虚拟现实、增强现实和游戏等领域具有广泛的应用潜力。通过提高渲染效率和视觉质量,该技术能够为用户提供更流畅和沉浸的体验,推动相关行业的发展。未来,该方法还可能扩展到其他实时渲染应用中,提升整体用户体验。

📄 摘要(原文)

3D Gaussian Splatting (3DGS) has rapidly become a leading technique for novel-view synthesis, providing exceptional performance through efficient software-based GPU rasterization. Its versatility enables real-time applications, including on mobile and lower-powered devices. However, 3DGS faces key challenges in virtual reality (VR): (1) temporal artifacts, such as popping during head movements, (2) projection-based distortions that result in disturbing and view-inconsistent floaters, and (3) reduced framerates when rendering large numbers of Gaussians, falling below the critical threshold for VR. Compared to desktop environments, these issues are drastically amplified by large field-of-view, constant head movements, and high resolution of head-mounted displays (HMDs). In this work, we introduce VRSplat: we combine and extend several recent advancements in 3DGS to address challenges of VR holistically. We show how the ideas of Mini-Splatting, StopThePop, and Optimal Projection can complement each other, by modifying the individual techniques and core 3DGS rasterizer. Additionally, we propose an efficient foveated rasterizer that handles focus and peripheral areas in a single GPU launch, avoiding redundant computations and improving GPU utilization. Our method also incorporates a fine-tuning step that optimizes Gaussian parameters based on StopThePop depth evaluations and Optimal Projection. We validate our method through a controlled user study with 25 participants, showing a strong preference for VRSplat over other configurations of Mini-Splatting. VRSplat is the first, systematically evaluated 3DGS approach capable of supporting modern VR applications, achieving 72+ FPS while eliminating popping and stereo-disrupting floaters.