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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="keywords" content="OpenSun3D">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Open☀️3D </title>
<link rel="stylesheet" href="./static/css/bulma.min.css">
<link rel="stylesheet" href="./static/css/fontawesome.all.min.css">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/jpswalsh/academicons@1/css/academicons.min.css">
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<link rel="stylesheet" href="css/style.css"> <!-- Resource style -->
<script src="js/modernizr.js"></script> <!-- Modernizr -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script defer src="./static/js/fontawesome.all.min.js"></script>
</head>
<body>
<section class="hero">
<!-- <div class="hero-body" style="background-color: #1C2D59"> -->
<div class="hero-body" style="background-color: #1C2D59; background-image: linear-gradient(135deg, rgba(9, 18, 41, 0.54), rgba(28, 45, 89, 0.4)), url('./static/images/Gemini_Generated_Image_9bm7k9bm7k9bm7k9.png'); background-size: cover; background-repeat: no-repeat; background-position: center;">
<div class="container is-max-desktop">
<div class="columns is-centered">
<div class="column has-text-centered">
<h1 class="title is-1 outline" style="color: white">OpenSUN3D</h1>
<p class="title is-4 outline" style="color: white">7<sup>th</sup> Workshop on Open-World 3D Scene Understanding and Representations</p>
<h1 class="is-is-5 outline" style="color: white"><b>September 8 (morning), 2026 in conjunction with ECCV 2026 in Malmö, Sweden.</b></h1>
<!-- <h1 class="is-is-5 outline" style="color: white"><b>Room: TBA</b></h1> -->
</div>
</div>
</div>
</div>
</section>
<section>
<div class="container is-max-widescreen">
<div class="hero-body">
<h2 class="subtitle has-text-centered nav-glass-shell">
<!-- <a href="#schedule" class="button">Schedule</a> -->
<a href="#speakers" class="button nav-glass-button">Speakers</a>
<a href="#paper_track" class="button nav-glass-button">Paper Track</a>
<!-- <a href="#posters" class="button">Posters</a> -->
<a href="#challenge" class="button nav-glass-button">Challenge</a>
<!-- <a href="#relatedwork" class="button">Related Work</a> -->
<a href="#organizers" class="button nav-glass-button">Organizers</a>
<div class="dropdown nav-glass-dropdown">
<span class="button nav-glass-button">All Editions <i class="fa fa-chevron-down" aria-hidden="true"></i></span>
<div class="dropdown-content">
<a href="index.html">ECCV 2026</a><br />
<a href="index_cvpr26.html">CVPR 2026</a><br />
<a href="index_iccv25.html">ICCV 2025</a><br />
<a href="index_cvpr25.html">CVPR 2025</a><br />
<a href="index_eccv24.html">ECCV 2024</a><br />
<a href="index_cvpr24.html">CVPR 2024</a><br />
<a href="index_iccv23.html">ICCV 2023</a>
</div>
</div>
</h2>
</div>
</div>
</section>
<section class="section" id="Motivation">
<div class="container is-max-desktop content">
<h2 class="title">Introduction</h2>
<div class="content has-text-justified">
For intelligent agents to thrive in the physical world, they must not only perceive but also comprehend and act within it.
This year’s workshop unites leading researchers advancing world models and spatial intelligence, from 3D perception and scene understanding to generative world representations.
Through keynotes and a challenge on open 3D interaction perception, we will explore how machines learn to reason about and engage with their environments.
The workshop aims to shape the next generation of spatially grounded AI, bridging scientific discovery, practical deployment, and responsible innovation.
</div>
</div>
</section>
<section class="section" id="global-timeline">
<div class="container is-max-desktop content">
<h2 class="title is-4">
Important Dates
</h2>
<div class="timeline-horizontal">
<div class="timeline-item" data-date="2026-06-15">
<a class="button is-small is-dark is-outlined" href="#challenge">Challenge</a>
<p>Challenges Open</p>
<time>Jun 15, 2026</time>
</div>
<div class="timeline-item" data-date="2026-06-15">
<a class="button is-small is-link is-outlined" href="#paper_track">Paper Track</a>
<p>Paper Submissions Open</p>
<time>Jun 15, 2026</time>
</div>
<div class="timeline-item" data-date="2026-08-01">
<a class="button is-small is-link is-outlined" href="#paper_track">Paper Track</a>
<p>Proceedings Track Deadline</p>
<time>Aug 1, 2026</time>
</div>
<div class="timeline-item" data-date="2026-08-01">
<a class="button is-small is-link is-outlined" href="#paper_track">Paper Track</a>
<p>Non-Archival Track Deadline</p>
<time>Aug 1, 2026</time>
</div>
<div class="timeline-item" data-date="2026-08-25">
<a class="button is-small is-dark is-outlined" href="#challenge">Challenge</a>
<p>Challenges Deadline</p>
<time>Aug 25, 2026</time>
</div>
<div class="timeline-item" data-date="2026-09-08">
<a class="button is-small is-warning" href="#speakers">Workshop</a>
<p>Workshop</p>
<time>Sep 8-9, 2026</time>
</div>
</div>
<div class="next-deadline-box">
⏳ <strong>Next deadline:</strong>
<span id="next-deadline-label"></span>
—
<span id="next-deadline-countdown"></span>
</div>
</div>
</section>
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<!-- <section class="section" style="margin-top: -50px">
<div class="container is-max-desktop">
<section class="section" id="Challenge">
<div class="container is-max-desktop content">
<h2 class="title" id="challenge">Challenge 🚀</h2>
This year, our challenge will consist of two tracks, open-vocabulary 3D object instance search and
open-vocabulary 3D functionality grounding.
<br>
<ul>
<li><b>Challenge Track 1</b>: <a href="https://opensun3d.github.io/cvpr24-challenge/track_1">Open-vocabulary
3D Object Instance
Search</a></li>
<ul>
<li><b>Submission Portal</b>: <a
href="https://eval.ai/web/challenges/challenge-page/2102/overview">EvalAI</a></li>
<li><b>Data Instructions & Helper Scripts</b>: April 17, 2024</li>
<li><b>Dev Phase Start</b>: April 17, 2024</li>
<li><b>Submission Portal Start</b>: April 19, 2024</li>
<li><b>Test Phase Start</b>: May 1, 2024</li>
<li><b>Test Phase End</b>: June 14, 2024 (14:00 Pacific Time)</li>
</ul>
<li><b>Challenge Track 2</b>: <a href="https://opensun3d.github.io/cvpr24-challenge/track_2">Open-vocabulary
3D Functionality
Grounding</a></li>
<ul>
<li><b>Submission Portal</b>: <a
href="https://eval.ai/web/challenges/challenge-page/2262/overview">EvalAI</a></li>
<li><b>Data Instructions & Helper Scripts</b>: April 17, 2024</li>
<li><b>Dev Phase Start</b>: April 17, 2024</li>
<li><b>Submission Portal Start</b>: April 19, 2024</li>
<li><b>Test Phase Start</b>: May 4, 2024</li>
<li><b>Test Phase End</b>: June 14, 2024 (14:00 Pacific Time)</li>
</ul>
</ul>
<p>Please check <a href="https://opensun3d.github.io/index_iccv23.html#challengeresults">this page</a>
out
for an overview of last year's challenge results.
We have also published a <a href="https://arxiv.org/abs/2402.15321"> technical report</a> providing an
overview of our ICCV 2023 workshop challenge.</p>
<p>Our workshop challenge is proudly supported by:</p>
<p align="center">
<img src="static/images/matterport.png" width="40%" style="margin: 20px" />
<img src="static/images/nvidia.png" width="40%" style="margin: 20px" />
</p>
</div>
</section>
</div>
</section>
<section class="section" id="Papers">
<div class="container is-max-desktop content">
<h2 class="title" id="dates">Important Dates 🗓️</h2>
<b>Paper Track</b>: We accept novel full 8-page papers for publication in the proceedings, and
either shorter
4-page extended abstracts or 8-page papers of novel or previously published work that will not
be included in
the
proceedings. All submissions have to follow the <a
href="https://cvpr.thecvf.com/Conferences/2024/AuthorGuidelines">CVPR 2024 author
guidelines.</a>
</li>
<ul>
<li><b>Submission Portal</b>: <a href="https://cmt3.research.microsoft.com/OpenSUN3D2024">CMT</a></li>
<li><b>Paper Submission Deadline</b>: April 1, 2024 (23:59 Pacific Time)</li>
<li><b>Notification to Authors</b>: April 9, 2024</li>
<li><b>Camera-ready submission</b>: April 14, 2024</li>
</ul>
</div>
</section> -->
<!--
<section class="section" id="schedule">
<div class="container is-max-desktop content">
<h2 class="title">Schedule</h2>
<div class="content has-text-justified">
<table class="table table-striped">
<tr>
<td width="130">13:30 - 13:45</td>
<td style="background-color: #ddadef37">Welcome & Introduction</td>
</tr>
<tr>
<td>13:45 - 14:15</td>
<td style="background-color:#8cd8fb72">
Keynote 1
<b>Vasileios Balntas</b> (Reality Labs Research)
</td>
</tr>
<tr>
<td>14:15 - 14:45</td>
<td style="background-color:#8cd8fb72">
Keynote 2
<b>Djamila Aouada</b> (University of Luxembourg)
</td>
</tr>
<tr>
<td>14:45 - 15:15</td>
<td style="background-color:#8cd8fb72">
Keynote 3
<b>Andrea Tagliasacchi</b> (Simon Fraser University)
</td>
</tr>
<tr>
<td>15:15 - 16:00</td>
<td style="background-color: #ddadef37">Coffee Break & Poster Session (Hall II, Boards 148-157)</td>
</tr>
<tr>
<td>16:00 - 16:30</td>
<td style="background-color:#8cd8fb72">
Keynote 4
<b>Chelsea Finn</b> (Stanford University)
</td>
</tr>
<tr>
<td>16:30 - 17:00</td>
<td style="background-color:#8cd8fb72">
Keynote 5
<b>Aleks Holynski</b> (Google DeepMind)
</td>
</tr>
<tr>
<td>17:00 - 17:15</td>
<td style="background-color:#8cd8fb72">
Challenge 1 Winner <b>Functionality Segmentation</b>
<b><a href="https://github.com/YilmazKadir/">Kadir Yilmaz</a></b>
(<a href="https://yilmazkadir.github.io/Volt/static/slides/Volt_cvpr_slides.pdf">Slides</a>)
</td>
</tr>
<tr>
<td>17:15 - 17:30</td>
<td style="background-color:#8cd8fb72">
Challenge 2 Winner <b>Open-Vocabulary 3D Affordance Grounding</b>
<b><a href="https://charlieleee.github.io/">Charlie Lee</a></b>
(<a href="https://drive.google.com/file/d/1qUMbcxxDgpUuuKC0xOTv8oGgMO8KqvR4">Slides</a>)
</td>
</tr>
<tr>
<td>17:30 - 17:45</td>
<td style="background-color: #ddadef37">Concluding Remarks</td>
</tr>
</table>
</div>
</div>
</section> -->
<section class="section" id="Invited Speakers">
<div class="container is-max-desktop content">
<h2 class="title" id="speakers">Keynote Speakers</h2>
<!-- <div class="card">
<div class="card-content">
<div class="columns is-vcentered">
<div class="column is-one-quarter">
<figure class="image is-128x128">
<img class="is-rounded" src="static/img/tali.jpg" style="width: 128px; height: 128px; object-fit: cover;">
</figure>
</div>
<div class="column">
<a href="https://www.weizmann.ac.il/math/dekel/" target="_blank">
<p class="title is-4">Tali Dekel</p>
<p class="subtitle is-6">Associate Professor at Weizmann Institute<br />Staff Research Scientist at Google Deepmind</p>
</a>
</div>
</div>
<p>
Tali Dekel is an Associate Professor at the Faculty of Mathematics and Computer Science at the Weizmann Institute of Science,
and a Staff Research Scientist at Google DeepMind. Before that she was a Postdoctoral Associate with Prof. Bill Freeman, at CSAIL, MIT.
She completed her Ph.D. in the school of Electrical Engineering of Tel-Aviv University, where she was supervised by Prof. Shai Avidan (TAU) and Prof. Yael Moses (IDC).
Her main research interests include images and videos analysis, multi-view systems, 3D structure and motion estimation, image synthesize and rendering.
</p>
</div>
</div> -->
<br />
<div class="card">
<div class="card-content">
<div class="columns is-vcentered">
<div class="column is-one-quarter">
<figure class="image is-128x128">
<img class="is-rounded" src="https://georgiagkioxari.com/teasers/me/me_at_anb.png" style="width: 128px; height: 128px; object-fit: cover;">
</figure>
</div>
<div class="column">
<p class="title is-4"><a href="https://georgiagkioxari.com/" target="_blank">Georgia Gkioxari</a></p>
<p class="subtitle is-6">Assistant Professor at Caltech</p>
</div>
</div>
<p>
<!-- Georgia is an assistant professor in the Computing & Mathematical Sciences department at Caltech. Previously, she was a research scientist at Meta's FAIR team. She completed her PhD at UC Berkeley with Jitendra Malik and her undergraduate studies at NTUA, Greece, where she worked with Petros Maragos. -->
</p>
</div>
</div>
<br />
<div class="card">
<div class="card-content">
<div class="columns is-vcentered">
<div class="column is-one-quarter">
<figure class="image is-128x128">
<img class="is-rounded" src="https://scholar.googleusercontent.com/citations?view_op=view_photo&user=CxbDDRMAAAAJ&citpid=4" style="width: 128px; height: 128px; object-fit: cover;">
</figure>
</div>
<div class="column">
<p class="title is-4"><a href="https://www.linkedin.com/in/peter-kontschieder-2a6410134/" target="_blank">Peter Kontschieder</a></p>
<p class="subtitle is-6">Research Director at Meta</p>
</a>
</div>
</div>
<p>
</p>
</div>
</div>
<br />
<div class="card">
<div class="card-content">
<div class="columns is-vcentered">
<div class="column is-one-quarter">
<figure class="image is-128x128">
<img class="is-rounded" src="https://dimadamen.github.io/Dima2019_s.jpg" style="width: 128px; height: 128px; object-fit: cover;">
</figure>
</div>
<div class="column">
<p class="title is-4"><a href="https://dimadamen.github.io/" target="_blank">Dima Damen</a></p>
<p class="subtitle is-6">University of Bristol / Google DeepMind</p>
</a>
</div>
</div>
<p>
</p>
</div>
</div>
<br />
<div class="card">
<div class="card-content">
<div class="columns is-vcentered">
<div class="column is-one-quarter">
<figure class="image is-128x128">
<img class="is-rounded" src="https://niessnerlab.org/members/matthias_niessner/img.jpg" style="width: 128px; height: 128px; object-fit: cover;">
</figure>
</div>
<div class="column">
<p class="title is-4"><a href="https://niessnerlab.org/members/matthias_niessner/profile.html" target="_blank">Matthias Nießner</a></p>
<p class="subtitle is-6">TUM / Spaitial AI</p>
</a>
</div>
</div>
<p>
</p>
</div>
</div>
<br />
<div class="card">
<div class="card-content">
<div class="columns is-vcentered">
<div class="column is-one-quarter">
<figure class="image is-128x128">
<img class="is-rounded" src="static/img/heess.jpg" style="width: 128px; height: 128px; object-fit: cover;">
</figure>
</div>
<div class="column">
<p class="title is-4"><a href="https://scholar.google.com/citations?user=79k7bGEAAAAJ&hl=en" target="_blank">Nicolas Heess</a></p>
<p class="subtitle is-6">Google DeepMind</p>
</a>
</div>
</div>
<p>
</p>
</div>
</div>
</div>
</section>
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<!--
<section class="section" id="dates">
<div class="container is-max-desktop content">
<h2 class="title" id="challenge">Challenge</h2>
<p>
This year, we host a challenge based on the <a href="https://scenefun3d.github.io" target="_blank" rel="noopener">SceneFun3D benchmark</a> and the <a href="https://insait-institute.github.io/articulate3d.github.io/" target="_blank" rel="noopener">Articulate3D dataset</a>.
The challenge focuses on fine-grained functionality, affordance, and interaction understanding in 3D indoor environments. It consists of three tracks:
</p>
<span style="
background: linear-gradient(135deg, #dbe7ff 0%, #cddcff 100%);
color: #044285;
padding: 0.25em 0.5em;
border-radius: 6px;
font-weight: 600;
font-size: 0.95rem;
display: inline-block;
line-height: 1.4;
">
🏆 Prize per challenge winner team: €1,000
</span>
<ul>
<li><b>Track 1:</b> Functionality Segmentation [SceneFun3D] <a href="https://scenefun3d.github.io/benchmark">Benchmark</a></li>
<li><b>Track 2:</b> Open-Vocabulary 3D Affordance Grounding [SceneFun3D] <a href="https://scenefun3d.github.io/benchmark">Benchmark</a></li>
<li><b>Track 3:</b> Interaction Understanding [Articulate3D]</li>
</ul>
<p>Below are key resources and important dates for each track.</p>
<h4>Tracks 1 & 2 [SceneFun3D]</h4>
<ul>
<li><a href="https://scenefun3d.github.io/documentation" target="_blank" rel="noopener">SceneFun3D Documentation</a></li>
<li><a href="https://eval.ai/web/challenges/challenge-page/2466/overview" target="_blank" rel="noopener">Benchmark Submission Portal</a></li>
<li><a href="https://scenefun3d.github.io/documentation/benchmarks/guidelines/" target="_blank" rel="noopener">Benchmark Submission Instructions</a></li>
<li><b>Submission Opens:</b> June 25, 2025</li>
<li><b>Submission Deadline:</b> October 14, 2025</li>
</ul>
<h4>Track 3 [Articulate3D]</h4>
<ul>
<li><a href="https://insait-institute.github.io/articulate3d.github.io/challenge.html" target="_blank" rel="noopener">Track 3 Documentation</a></li>
<li><a href="https://insait-institute.github.io/articulate3d.github.io" target="_blank" rel="noopener">Articulate3D</a></li>
<li><a href="https://art3dchallenge.jumpingcrab.com/web/challenges/challenge-page/21/overview" target="_blank" rel="noopener">Track 3 Submission Portal</a></li>
<li><b>Submission Opens:</b> August 1, 2025</li>
<li><b>Submission Deadline:</b> October 14, 2025</li>
</ul>
</div>
</section>
<section class="section" id="dates">
<div class="container is-max-desktop content">
<h2 class="title" id="paper_track">Poster Presentations</h2>
All paper submission that are accepted have to option to be presented as posters during the workshop.
<br><br>
<u>For poster presenters</u>:
Please use <b>poster boards 148-157</b> in <b>Hall D (Level 3)</b> to put your poster.
<br><br>
<u>Printing your poster</u>:
Please follow the official <a href="https://cvpr.thecvf.com/Conferences/2025/PosterPrintingInformation">CVPR 2025 guidelines for poster preparation</a>.
Note the <b>early bird</b> poster printing deadline of <b>May 25, 2025</b>.
</div>
</section> -->
<!--
<section class="section" id="dates">
<div class="container is-max-desktop content">
<h2 class="title" id="paper_track">Paper Track</h2>
We invite <b>8-page full papers</b> for inclusion in the proceedings,
as well as <b>4-page extended abstracts</b>. Extended abstracts may present either new or previously published work
but will not be included in the proceedings.
4-page extended abstracts generally do not conflict with the dual submission policies of other conferences,
whereas 8-page full papers, if accepted, will be part of the proceedings and are therefore subject to the dual submission policy
(i.e., they cannot be under review for another conference at the same time or already accepted at another conference).
All submissions should be anonymous and follow the <a href="https://media.eventhosts.cc/Conferences/ICCV2025/ICCV2025-Author-Kit-Feb.zip">official ICCV 2025</a> guidelines.
<ul>
<li><b>Submission portal</b>: <a href="https://openreview.net/group?id=thecvf.com/ICCV/2025/Workshop/OpenSUN3D#tab-recent-activity">OpenReview</a></li>
<li><b>Paper submission opens</b>: June 23, 2025 </li>
<br>
<b>SUBMISSION DEADLINE 1 - Full Papers in Proceedings</b>
<li><b>Submission deadline 1 (full-papers in proceedings) </b>: July 4, 2025 (23:59 GMT) <i> (Countdown: <span class="countdown" data-target="July 1, 2025 23:59:59 UTC"></span>)</i>
<!-- <i> (Countdown: <span class="countdown" data-target="July 1, 2025 23:59:59 UTC"></span>)</i>
</li>
<li><b>Notification to authors (full-papers in proceedings)</b>: July 10, 2025 </li>
<li><b>Camera ready submission</b>: August 10, 2025 </li>
<br>
<b>SUBMISSION DEADLINE 2 - Extended Abstracts and Non-Archival Full Papers (No Proceedings!)</b>
</li>
<li><b>Submission deadline 2 </b>: September 1, 2025 (23:59 GMT) <i> (Countdown: <span class="countdown" data-target="September 1, 2025 23:59:59 UTC"></span>)</i>
<li><b>Notification to authors</b>: September 15, 2025 </li>
</ul>
</div>
</section> -->
<section class="section" id="paper_track">
<div class="container is-max-desktop content">
<h2 class="title">
Paper Track
<span style="
font-size: 0.6em;
color: white;
background-color: #28a745;
border-radius: 4px;
padding: 0.2em 0.5em;
vertical-align: super;
">Open</span>
</h2>
<table class="table is-fullwidth is-striped">
<thead>
<tr>
<th>Submission Type</th>
<th>Length</th>
<th>In Proceedings</th>
<th>Deadline</th>
<th>Policies</th>
</tr>
</thead>
<tbody>
<tr>
<td>Proceedings Track</td>
<td>8 pages</td>
<td>Yes</td>
<td><strong>August 1, 2026</strong></td>
<td>Anonymous, subject to dual-submission rules.</td>
</tr>
<tr>
<td>Non-Archival Track</td>
<td>4 / 8 pages</td>
<td>No</td>
<td><strong>August 1, 2026</strong></td>
<td>Anonymous, may include previously published work.</td>
</tr>
</tbody>
</table>
<div style="margin-top: 1rem; margin-bottom: 1rem;">
<a class="button_submit" href="https://openreview.net/group?id=thecvf.com/ECCV/2026/Workshop/OpenSUN3D" target="_blank" rel="noopener">
Submit via OpenReview
</a>
</div>
<p>
All submissions must be anonymous and follow the
<a href="https://eccv.ecva.net/Conferences/2026/SubmissionPolicies">ECCV 26 author guidelines</a>.
</p>
<div class="columns is-multiline">
<!-- Deadline 1 -->
<div class="column is-6">
<div class="card">
<div class="card-content">
<h4 class="title is-5">
Submission Deadline 1:<br>Proceedings Track
</h4>
<p>
8-page full papers for inclusion in the <strong>CVPR workshop proceedings</strong>.
Those submissions are subject to the dual submission policy, only original work not under review or published elsewhere is allowed.
</p>
<ul>
<li>
<i class="fa fa-flag-checkered"></i>
<strong>Submission deadline:</strong> August 1, 2026
</li>
<li>
<i class="fa fa-envelope"></i>
<strong>Notification to authors:</strong> August 10, 2026
</li>
<li>
<i class="fa fa-upload"></i>
<strong>Camera-ready submission:</strong> August 15, 2026
</li>
</ul>
</div>
</div>
</div>
<!-- Deadline 2 -->
<div class="column is-6">
<div class="card">
<div class="card-content">
<h4 class="title is-5">
Submission Deadline 2:<br>Extended Abstracts & Non-Archival Papers
</h4>
<p>
4-page extended abstracts or 8-page full papers that will <strong>not be included in the proceedings.</strong>
May include previously published work that the authors want to present at the workshop.
</p>
<ul>
<li>
<i class="fa fa-flag-checkered"></i>
<strong>Submission deadline:</strong>
August 1, 2026
</li>
<li>
<i class="fa fa-envelope"></i>
<strong>Notification to authors:</strong> August 10, 2026
</li>
<li>
May include previously published work.
</ul>
</div>
</div>
</div>
</div>
</div>
</section>
<!-- <section class="section" id="posters">
<div class="container is-max-desktop content">
<h2 class="title">Poster Information</h2>
<div style="border: 2px solid #b00020; background: #ffe5e5; color: #7a0015; padding: 1rem 1.25rem; border-radius: 8px; margin-bottom: 1.25rem;">
<strong>Notice:</strong> Poster boards are available for use, but no boards are dedicated specifically to the OpenSUN3D workshop.<br>Use any poster board that is available in <b>Exhibit Hall A</b>.
</div>
<div class="content has-text-justified">
<h4 class="title is-5">Poster Specifications</h4>
<ul>
<li><strong>Workshop Poster Size:</strong> 42” x 21” (WxH, aspect ratio 2:1, landscape format).</li>
<li><strong>Recommendations:</strong> We recommend a 3 or 4 column layout with minimal text, focusing on large, expressive figures. The poster should serve as a tool for a 5-10 minute presentation.</li>
</ul>
<h4 class="title is-5">Poster Printing Service</h4>
<p>
CVPR 2026 offers a poster printing service with onsite collection at the Denver convention center.
This service can be used for both main conference and workshop papers.
</p>
<ul>
<li><strong>Service Link:</strong> <a href="https://cvprus.myprintdesk.net/login" target="_blank">https://cvprus.myprintdesk.net/login</a></li>
<li><strong>Format:</strong> PDF preferred, 100 DPI or vector art at full size, no bleed.</li>
<li><strong>Submission Label:</strong> When submitting, please list the <strong>Workshop Acronym (OpenSun3D)</strong>, your <strong>Paper ID</strong>, and your <strong>Full Name</strong> in the Job Name field.</li>
<li><strong>Deadlines & Pricing:</strong>
<ul>
<li>Early Bird: $55 (USD)</li>
<li>Rush (After May 17, 2026, 5pm EST): $77 (USD)</li>
<li>Express (After May 24, 2026, 5pm EST): $121 (USD)</li>
<li><strong>Final Online Order Deadline:</strong> Friday May 29, 2026, Noon EST</li>
</ul>
</li>
<li><i>Note: Local orders from ARC Denver are NOT available for workshop posters.</i></li>
</ul>
<h4 class="title is-5">Poster Pickup (Exhibit Hall A)</h4>
<ul>
<li><strong>Wednesday, June 3 & Thursday, June 4:</strong> 07:30 - 15:00</li>
<li><strong>Friday, June 5 - Sunday, June 7:</strong> 07:30 - 17:00</li>
</ul>
<p>
Please remember to remove your poster at the end of your session or it will be discarded.
</p>
</div>
</div>
</section> -->
<section class="section" id="challenge">
<div class="container is-max-desktop content">
<h2 class="title">Challenge Track
<span style="
font-size: 0.6em;
color: white;
background-color: #28a745;
border-radius: 4px;
padding: 0.2em 0.5em;
vertical-align: super;
">Open</span>
</h2>
<p class="has-text-justified">
We host a 3-track challenge based on the
<a href="https://scenefun3d.github.io" target="_blank" rel="noopener">SceneFun3D benchmark</a>
and the
<a href="https://insait-institute.github.io/articulate3d.github.io/" target="_blank" rel="noopener">Articulate3D dataset</a>.
The challenge focuses on fine-grained functionality, affordance, and interaction understanding in 3D indoor environments.
</p>
<!--
<div class="notification is-info is-light">
🏆 <strong>Prize:</strong> €1,000 per challenge-winning team
</div>
-->
<h4 class="title is-5">Tracks Overview</h4>
<ul>
<li><strong>Track 1:</strong> Functionality Segmentation (SceneFun3D)</li>
<li><strong>Track 2:</strong> Open-Vocabulary 3D Affordance Grounding (SceneFun3D)</li>
<li><strong>Track 3:</strong> Interaction Understanding (Articulate3D)</li>
</ul>
<br>
<div class="columns is-multiline">
<!-- Track 1 & 2 -->
<div class="column is-6">
<div class="card">
<div class="card-content">
<h4 class="title is-5">Tracks 1 & 2 — SceneFun3D</h4>
<p><strong>Resources</strong></p>
<div class="buttons">
<a class="button is-small" href="https://scenefun3d.github.io/documentation" target="_blank">SceneFun3D Documentation</a>
<a class="button is-small" href="https://scenefun3d.github.io/documentation/benchmarks/guidelines/" target="_blank">Submission Instructions</a>
<a class="button is-small" href="https://eval.ai/web/challenges/challenge-page/2466/overview" target="_blank">Submission Portal</a>
</div>
<p><strong>Important Dates</strong></p>
<ul>
<li><i class="fa fa-calendar"></i> Challenge start: <strong>June 15, 2026</strong></li>
<li><i class="fa fa-flag-checkered"></i> Submission deadline: <strong>August 25, 2026</strong></li>
</ul>
</div>
</div>
</div>
<!-- Track 3 -->
<div class="column is-6">
<div class="card">
<div class="card-content">
<h4 class="title is-5">Track 3 — Articulate3D</h4>
<p><strong>Resources</strong></p>
<div class="buttons">
<a class="button is-small" href="https://insait-institute.github.io/articulate3d.github.io/challenge.html" target="_blank">Articulate3D Challenge Website</a>
<a class="button is-small" href="https://insait-institute.github.io/articulate3d.github.io" target="_blank">Dataset Website</a>
<a class="button is-small" href="https://art3dchallenge.jumpingcrab.com/web/challenges/challenge-page/21/overview" target="_blank">Submission Portal</a>
</div>
<p><strong>Important Dates</strong></p>
<ul>
<li><i class="fa fa-calendar"></i> Submission opens: <strong>June 15, 2026</strong></li>
<li><i class="fa fa-flag-checkered"></i> Submission deadline: <strong>August 25, 2026</strong></li>
</ul>
</div>
</div>
</div>
</div>
<!--
<p class="mt-5">Our workshop challenge is proudly supported by:</p>
<div class="has-text-centered">
<img src="static/images/vivo.png" width="25%" style="margin: 20px;">
<img src="https://eval.ai/dist/images/evalai-logo.png" width="25%" style="margin: 20px;">
</div>
-->
</div>
</section>
<section class="section" style="padding-top: 0; padding-bottom: 0.5rem;">
<div class="container is-max-desktop content" style="text-align: center;">
<p><strong>Proudly supported by Huawei</strong></p>
<img src="https://upload.wikimedia.org/wikipedia/en/0/04/Huawei_Standard_logo.svg" alt="Huawei logo" style="height: 72px; width: auto;" loading="lazy" />
</div>
</section>
<section class="section" id="Related Work">
<div class="container is-max-desktop content">
<h2 class="title" id="relatedwork">Related Works</h2>
Below is a collection of concurrent and related works in the field of open-set 3D scene understanding.
<ul>
<li><a href="https://concept-fusion.github.io/">ConceptFusion: Open-set Multimodal 3D Mapping</a> RSS'23
</li>
<li><a href="https://pengsongyou.github.io/openscene">OpenScene: 3D Scene Understanding with Open
Vocabularies</a> CVPR'23</li>
<li><a href="https://www.lerf.io">LERF: Language Embedded Radiance Fields</a> ICCV'23</li>
<li><a href="https://pfnet-research.github.io/distilled-feature-fields/">Decomposing NeRF for Editing
via Feature Field Distillation</a> NeurIPS'22</li>
<li><a href="https://semantic-abstraction.cs.columbia.edu/">Semantic Abstraction: Open-World 3D Scene
Understanding from 2D Vision-Language Models</a> CoRL'22</li>
<li><a href="https://rozdavid.github.io/scannet200">Language-Grounded Indoor 3D Semantic Segmentation in
the Wild</a> ECCV'22</li>
<li><a href="https://3dlg-hcvc.github.io/multiscan/">MultiScan: Scalable RGBD Scanning for 3D
Environments with Articulated Objects</a> NeurIPS'22</li>
<li><a href="https://github.com/NVlabs/ODISE">ODISE: Open-Vocabulary Panoptic Segmentation with
Text-to-Image Diffusion Models</a> CVPR'23</li>
<li><a href="https://github.com/Kunhao-Liu/3D-OVS">Weakly Supervised 3D Open-Vocabulary Segmentation</a>
NeurIPS'23</li>
<li><a href="https://arxiv.org/abs/2306.02329">Multi-CLIP: Contrastive Vision-Language Pre-training for
Question Answering tasks in 3D Scenes</a></li>
<li><a href="https://openmask3d.github.io">OpenMask3D: Open-Vocabulary 3D Instance Segmentation</a>
NeurIPS'23</li>
<li><a href="https://arxiv.org/abs/2303.04748">CLIP-FO3D: Learning Free Open-world 3D Scene
Representations from 2D Dense CLIP</li>
<li><a href="https://tsagkas.github.io/vl-fields/">VL-Fields: Towards Language-Grounded Neural Implicit
Spatial Representations</a> ICRA'23</li>
<li><a
href="https://openaccess.thecvf.com/content/CVPR2023/papers/Ding_PLA_Language-Driven_Open-Vocabulary_3D_Scene_Understanding_CVPR_2023_paper.pdf">PLA:
Language-Driven Open-Vocabulary 3D Scene Understanding</a> CVPR'23</li>
<li><a href="https://arxiv.org/abs/2304.00962">RegionPLC: Regional Point-Language Contrastive Learning
for Open-World 3D Scene Understanding</a></li>
<li><a href="https://arxiv.org/abs/2309.00616">OpenIns3D: Snap and Lookup for 3D open-vocabulary
Instance Segmentation</a></li>
<li><a href="https://concept-graphs.github.io/assets/pdf/2023-ConceptGraphs.pdf">ConceptGraphs:
Open-Vocabulary 3D Scene Graphs for Perception and Planning</a></li>
<li><a
href="https://openaccess.thecvf.com/content/CVPR2023/papers/Lu_Open-Vocabulary_Point-Cloud_Object_Detection_Without_3D_Annotation_CVPR_2023_paper.pdf">Open-Vocabulary
Point-Cloud Object Detection without 3D Annotation</a> CVPR'23</li>
<li><a href="https://github.com/yangcaoai/CoDA_NeurIPS2023">CoDA: Collaborative Novel
Box Discovery and Cross-modal Alignment for Open-vocabulary 3D Object Detection</a> NeurIPS'23
<li><a href="https://scenefun3d.github.io">SceneFun3D: Fine-Grained Functionality and Affordance Understanding
in 3D Scenes</a> CVPR'24
</li>
<li>
<a href="https://github.com/MIT-SPARK/Clio">
Clio: Real-time Task-Driven Open-Set 3D Scene Graphs</a> RA-L'24
</li>
<li>
<a href="https://nvlabs.github.io/Mosaic3D/">
Mosaic3D: Foundation Dataset and Model for Open-Vocabulary 3D Segmentation</a> CVPR'25
</li>
<li>
<a href="https://cvrp-sole.github.io/">
SOLE 🐾
Segment Any 3D Object with Language</a> ICLR'25
</li>
<br>
</ul>
and many more ... Please
feel free to reach out to add your own work (<a href="mailto:francis.engelmann@usi.ch">francis.engelmann@usi.ch</a>).
</ul>
</div>
</section>
<section class="section" id="Organizers">
<div class="container is-max-desktop content">
<h2 class="title" id="organizers">Organizers</h2>
<div class="columns is-centered is-variable is-0">
<div class="column is-one-fifth">
<a href="http://francisengelmann.github.io">
<div class="card">
<div class="card-image">
<figure class="image">
<img class="is-rounded" src="./static/img/francis.jpg" alt="Placeholder image">
</figure>
</div>
<div class="card-content">
<div class="media">
<div class="media-content" style="overflow-x: unset;">
<p class="title is-7 is-spaced">Francis Engelmann</p>
<p class="subtitle is-7">USI Lugano</p>
</div>
</div>
</div>
</div>
</a>
</div>
<div class="column is-one-fifth">
<a href="https://aycatakmaz.github.io">
<div class="card">
<div class="card-image">
<figure class="image">
<img class="is-rounded" src="./static/img/ayca.jpg" alt="Placeholder image">
</figure>
</div>
<div class="card-content">
<div class="media">
<div class="media-content" style="overflow-x: unset;">
<p class="title is-7 is-spaced">Ayca Takmaz</p>
<p class="subtitle is-7">ETH Zurich</p>
</div>
</div>
</div>
</div>
</a>
</div>
<div class="column is-one-fifth">
<a href="https://alexdelitzas.github.io/">
<div class="card">
<div class="card-image">