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<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- Primary Meta Tags -->
<!-- TODO: Replace with your paper title and author names -->
<meta name="title"
content="GHPT: Real-Time Relightable Gaussian Splatting using Hybrid Path Tracing - Jinyang Bo, Fan Dou, Wenrui Quan, Shangxun Liu, Yang Xu, Yuhe Zhang, Kang Li, Guohua Geng">
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<meta name="description" content="BRIEF_DESCRIPTION_OF_YOUR_RESEARCH_CONTRIBUTION_AND_FINDINGS">
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<!-- TODO: List all authors -->
<meta name="author"
content="Jinyang Bo, Fan Dou, Wenrui Quan, Shangxun Liu, Yang Xu, Yuhe Zhang, Kang Li, Guohua Geng">
<meta name="robots" content="index, follow">
<meta name="language" content="English">
<!-- Open Graph / Facebook -->
<meta property="og:type" content="article">
<!-- TODO: Replace with your institution or lab name -->
<meta property="og:site_name" content="College of Computer Science, Northwest University, China">
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<meta property="og:title" content="GHPT: Real-Time Relightable Gaussian Splatting using Hybrid Path Tracing">
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<meta property="og:description" content="BRIEF_DESCRIPTION_OF_YOUR_RESEARCH_CONTRIBUTION_AND_FINDINGS">
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<meta property="og:image" content="https://YOUR_DOMAIN.com/static/images/social_preview.png">
<meta property="og:image:width" content="1200">
<meta property="og:image:height" content="630">
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content="GHPT - Real-Time Relightable Gaussian Splatting using Hybrid Path Tracing - Research Preview">
<meta property="article:published_time" content="2024-01-01T00:00:00.000Z">
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<meta property="article:tag" content="KEYWORD1">
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<meta name="twitter:card" content="summary_large_image">
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<meta name="twitter:site" content="@YOUR_TWITTER_HANDLE">
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<meta name="twitter:creator" content="@AUTHOR_TWITTER_HANDLE">
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<meta name="twitter:title" content="PAPER_TITLE">
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<meta name="twitter:description" content="BRIEF_DESCRIPTION_OF_YOUR_RESEARCH_CONTRIBUTION_AND_FINDINGS">
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<meta name="twitter:image" content="https://YOUR_DOMAIN.com/static/images/social_preview.png">
<meta name="twitter:image:alt" content="PAPER_TITLE - Research Preview">
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<meta name="citation_title" content="PAPER_TITLE">
<meta name="citation_author" content="FIRST_AUTHOR_LAST, FIRST_AUTHOR_FIRST">
<meta name="citation_author" content="SECOND_AUTHOR_LAST, SECOND_AUTHOR_FIRST">
<meta name="citation_publication_date" content="2024">
<meta name="citation_conference_title" content="CONFERENCE_NAME">
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<!-- Additional SEO -->
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<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="default">
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<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
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<link rel="preconnect" href="https://documentcloud.adobe.com">
<link rel="preconnect" href="https://cdn.jsdelivr.net">
<!-- Page title -->
<title>GHPT - Real-Time Relightable Gaussian Splatting using Hybrid Path Tracing | Academic Research</title>
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<link rel="preload" href="static/css/bulma-carousel.min.css" as="style"
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<!-- Structured Data for Academic Papers -->
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</head>
<body>
<!-- Scroll to Top Button -->
<button class="scroll-to-top" onclick="scrollToTop()" title="Scroll to top" aria-label="Scroll to top">
<i class="fas fa-chevron-up"></i>
</button>
<!-- More Works Dropdown removed -->
<main id="main-content">
<section class="hero">
<div class="hero-body">
<div class="container is-max-desktop">
<div class="columns is-centered">
<div class="column has-text-centered">
<!-- Paper title -->
<h1 class="title is-1 publication-title">GHPT: Real-Time Relightable Gaussian Splatting using Hybrid Path
Tracing</h1>
<div class="is-size-5 publication-authors">
<!-- TODO: Replace with your paper authors and their personal links -->
<span class="author-block">
<a href="https://1benxiaohai1.github.io/about/" target="_blank">Jinyang Bo</a><sup>*</sup>,</span>
<span class="author-block">
<a target="_blank">Fan Dou</a><sup>*</sup>,</span>
<span class="author-block">
<a target="_blank">Wenrui Quan</a>,</span>
<span class="author-block">
<a target="_blank">Shangxun Liu</a>,</span>
<span class="author-block">
<a href="https://sapphiresoul.github.io/" target="_blank">Yang Xu</a><sup>†</sup>,</span>
<span class="author-block">
<a target="_blank">Yuhe Zhang</a>,</span>
<span class="author-block">
<a target="_blank">Kang Li</a>,</span>
<span class="author-block">
<a target="_blank">Guohua Geng</a></span>
</div>
<div class="is-size-5 publication-authors">
<!-- TODO: Replace with your institution and conference/journal info -->
<span class="author-block">College of Computer Science, Northwest University, China<br>CVPR 2026</span>
<!-- TODO: Remove this line if no equal contribution -->
<span class="eql-cntrb"><small><br><sup>*</sup>Indicates Equal Contribution,<sup>†</sup>Indicates
Corresponding
author</small></span>
</div>
<div class="column has-text-centered">
<div class="publication-links">
<!-- TODO: Update with your arXiv paper ID -->
<span class="link-block">
<a href="static/pdfs/GHPT_paper.pdf" target="_blank"
class="external-link button is-normal is-rounded is-dark">
<span class="icon">
<i class="fas fa-file-pdf"></i>
</span>
<span>Paper</span>
</a>
</span>
<!-- TODO: Add your supplementary material PDF or remove this section -->
<span class="link-block">
<a href="static/pdfs/GHPT_supplementary.pdf" target="_blank"
class="external-link button is-normal is-rounded is-dark">
<span class="icon">
<i class="fas fa-file-pdf"></i>
</span>
<span>Supplementary</span>
</a>
</span>
<!-- TODO: Replace with your GitHub repository URL -->
<span class="link-block">
<a href="https://github.com/1BenXiaoHai1/GHPT" target="_blank"
class="external-link button is-normal is-rounded is-dark">
<span class="icon">
<i class="fab fa-github"></i>
</span>
<span>Code</span>
</a>
</span>
</div>
</div>
</div>
</div>
</div>
</div>
</section>
<!-- Teaser image-->
<section class="hero teaser">
<div class="container is-max-desktop">
<div class="hero-body">
<!-- TODO: Replace with your teaser image -->
<img src="./static/images/teaser.png" alt="Teaser image of our method" loading="lazy" />
<!-- TODO: Replace with your image description -->
<h2 class="subtitle has-text-centered">
Real-time Gaussian splatting relighting and composition
under the City environment map. 113 fps at 1920×1080, NVIDIA
GeForce RTX 4080.
</h2>
</div>
</div>
</section>
<!-- End teaser image -->
<!-- Paper abstract -->
<section class="section hero is-light">
<div class="container is-max-desktop">
<div class="columns is-centered has-text-centered">
<div class="column is-four-fifths">
<h2 class="title is-3">Abstract</h2>
<div class="content has-text-justified">
<!-- TODO: Replace with your paper abstract -->
<p>
3D Gaussian splatting (3DGS) has emerged as a promising approach for high-fidelity 3D scene
representation. However,relighting and composition of Gaussian splatting remain challenging because path
tracing is not directly applicable. Existing relighting methods for Gaussian splatting typically adopt
either approximate rendering formulations or rely on Gaussian ray tracing, yielding low relighting
performance and low rendering efficiency. To address these limitations,we propose Gaussian hybrid path
tracing (GHPT), a three stage framework to acquire relightable Gaussian splatting models. The first
stage utilizes planar-based Gaussian splatting reconstruction representation (PGSR) to enable multi-view
consistent depth rendering and reconstruct the surface mesh of a scene. The second stage performs
physically-based differentiable rendering on the obtained mesh to reconstruct the material maps and the
environment map. The third stage utilizes factorized inverse path tracing (FIPT) on the Gbuffer rendered
by the PGSR, and visibility and indirect illu mination are evaluated by hardware-accelerated ray tracing
on the mesh with the material maps and the environment map reconstructed in the second stage.
Experiments demonstrate that the relighting performance of GHPT outperforms the baselines, and our
method can perform real-time relighting and composition of Gaussian splatting.
</p>
</div>
</div>
</div>
</div>
</section>
<!-- End paper abstract -->
<!-- Paper Pipeline -->
<section class="section hero is-small">
<div class="container is-max-desktop">
<div class="columns is-centered">
<div class="column is-full">
<div class="content">
<div class="level-set has-text-justified">
<p>
Our three-stage GS-based inverse rendering pipeline using hybrid path tracing. In the first stage, the
scene geometry is
reconstructed from multi-view images through planar-based Gaussians guided by normal priors. The
second stage employs physically-based
differentiable rendering to recover material properties of the mesh and the environment map. In the
final stage, we use FIPT to recover
material property of each Gaussian and take into account visibility and indirect illumination by ray
tracing the underlying mesh.
</p>
<p></p>
</div>
</div>
</div>
</div>
</div>
</section>
<!-- End paper pipeline -->
<!-- Paper pipeline image -->
<section class="hero teaser">
<div class="container is-max-desktop">
<div class="hero-body">
<img src="./static/images/pipeline.png"
alt="Our three-stage GS-based inverse rendering pipeline using hybrid path tracing" loading="lazy" />
<h2 class="subtitle has-text-centered">
<b>Three-stage GS-based inverse rendering pipeline.</b>
</h2>
</div>
</div>
</section>
<!--Qualitative Results -->
<section class="section hero is-small">
<div class="container is-max-desktop">
<div class="columns is-centered">
<div class="column is-full">
<div class="content">
<div class="level-set has-text-justified">
<p>
Qualitative comparison of relighting results under different environment maps on the Synthetic4Relight
and TensoIR Synthetic datasets.
</p>
</div>
</div>
</div>
</div>
</div>
</section>
<!-- End Qualitative Results -->
<!-- Qualitative Results Images -->
<section class="hero is-small">
<div class="hero-body">
<div class="container">
<div id="results-carousel" class="carousel results-carousel results-carousel-small">
<div class="item">
<!-- TODO: Replace with your research result images -->
<img src="static/images/Qualitative_results_on_Syn4Relight.png" alt="First research result visualization"
loading="lazy" />
<!-- TODO: Replace with description of this result -->
<h2 class="subtitle has-text-centered">
Qualitative comparison of relighting results under different environment maps on Synthetic4Relight
dataset.
</h2>
</div>
<div class="item">
<!-- Your image here -->
<img src="static/images/Qualitative_results_on_Tensoir.png" alt="Second research result visualization"
loading="lazy" />
<h2 class="subtitle has-text-centered">
Qualitative comparison of relighting results under different environment maps on TensoIR Synthetic
dataset.
</h2>
</div>
</div>
</div>
</div>
</section>
<!--End Qualitative Results Images -->
<!-- Quantitative Results -->
<section class="section hero is-small">
<div class="container is-max-desktop">
<div class="columns is-centered">
<div class="column is-full">
<div class="content">
<div class="level-set has-text-justified">
<p>
Quantitative comparison on the Synthetic4Relight and TensoIR Synthetic datasets.
</p>
</div>
</div>
</div>
</div>
</div>
</section>
<!-- End Quantitative Results-->
<!-- Quantitative Results Images -->
<section class="hero teaser">
<div class="container is-max-desktop">
<div class="hero-body">
<img src="./static/images/Quantitative_results.png" alt="Quantitative results on Synthetic4Relight dataset"
loading="lazy" />
</div>
</div>
</section>
<!--End Quantitative Results Images -->
<!-- Relighting and Composition Results -->
<section class="section hero is-small">
<div class="container is-max-desktop">
<div class="columns is-centered">
<div class="column is-full">
<div class="content">
<div class="level-set has-text-justified">
<p>
Real-time relighting and composition results in the Garden, Kitchen, and Room scenes. From left to
right: results without path tracing, results of our method, and results of our method relit by two
environment maps, Bridge
and Fireplace. Our method can produce more realistic results due to the presence of shadows and
indirect illumination.
</p>
<p></p>
</div>
</div>
</div>
</div>
</div>
</section>
<section class="hero teaser">
<div class="container is-max-desktop">
<div class="hero-body">
<img src="./static/images/Real-time_relighting_and_composition_results.png"
alt="Real-time relighting and composition results" loading="lazy" />
<h2 class="subtitle has-text-centered">
<b>Real-time relighting and composition results</b>
</h2>
</div>
</div>
</section>
<!-- Youtube video -->
<section class="hero is-small is-light">
<div class="hero-body">
<div class="container">
<!-- Paper video. -->
<h2 class="title is-3">Video Presentation</h2>
<div class="columns is-centered has-text-centered">
<div class="column is-four-fifths">
<div class="publication-video">
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<pre id="bibtex-code"><code>@article{Bo2026GHPT,
title={GHPT: Real-Time Relightable Gaussian Splatting using Hybrid Path Tracing},
author={Bo, Jinyang and Dou, Fan and Quan, Wenrui and Liu, Shangxun and Xu, Yang and Zhang, Yuhe and Li, Kang and Geng,
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year={2026}
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