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<!DOCTYPE html>
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  <title>About — Open4D</title>
  <meta name="description" content="About the Open4D project: mission, team, roadmap, contributing, and how to cite." />
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      <span class="section-eyebrow">About</span>
      <h1>The Open4D Project</h1>
      <p>
        Open4D is developed by the <strong style="color: var(--text);">SINRG Lab at Northeastern University</strong>
        as open research infrastructure for time-varying 4D geometry — with the explicit goal of letting
        research compound instead of resetting with every paper.
      </p>
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        <span class="section-eyebrow">Mission</span>
        <h2 style="font-size: clamp(1.8rem, 4vw, 2.4rem); font-weight: 800; letter-spacing: -0.03em; margin-bottom: 18px;">
          Shared foundations for a fast-moving field
        </h2>
        <p style="color: var(--text-muted); margin-bottom: 16px;">
          4D geometry — meshes and point clouds whose shape, and even connectivity, changes every frame —
          is the substrate of volumetric video, telepresence, digital twins, and robot perception. Yet
          the field's tooling is fragmented: every paper rebuilds IO, metrics, and pipelines from scratch.
        </p>
        <p style="color: var(--text-muted);">
          Open4D exists to fix that. A stable core provides the data model, IO, and metrics; research
          modules — codecs, trackers, editors — plug into it and evolve independently; benchmarks make
          comparisons reproducible; and apps prove the whole stack end-to-end, all the way to real-time
          playback on an XR headset.
        </p>
      </div>
      <div class="reveal">
        <div class="card" style="margin-bottom: 18px;">
          <h3>SINRG Lab</h3>
          <p>
            The Spatial Intelligence Research Group (SINRG) at Northeastern University works
            at the intersection of mobile systems, networking, and immersive computing — including
            volumetric video streaming, XR systems, and machine perception.
          </p>
          <a class="card-link" href="https://github.com/SINRG-Lab" target="_blank" rel="noopener">SINRG Lab on GitHub →</a>
        </div>
        <div class="card">
          <h3>Project PI</h3>
          <p>
            <strong style="color: var(--text);">Prof. Mallesham Dasari</strong> — Northeastern University.
            Open4D grows out of a line of research on volumetric video compression and streaming for
            immersive systems.
          </p>
          <a class="card-link" href="mailto:m.dasari@northeastern.edu">m.dasari@northeastern.edu →</a>
        </div>
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  <section class="section section-alt" id="roadmap">
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        <span class="section-eyebrow">Roadmap</span>
        <h2>Where the platform is heading</h2>
      </div>
      <div class="timeline reveal">
        <div class="timeline-item done">
          <span class="when">Shipped</span>
          <h4>Core API, IO, and players</h4>
          <p>The <code style="font-family: var(--mono); font-size: 0.85em; color: #a5b4fc;">.o4d</code> data model with readers, writers, playback, and conversion tools for meshes and point clouds — pip-installable.</p>
        </div>
        <div class="timeline-item done">
          <span class="when">Shipped</span>
          <h4>Compression modules</h4>
          <p>N4MC, TSMC, and TVMC integrated; Unity decoder plugin running on Meta Quest 3.</p>
        </div>
        <div class="timeline-item">
          <span class="when">In progress</span>
          <h4>Benchmarks &amp; baselines</h4>
          <p>Paper-reproducible evaluation harness with reimplemented baselines and shared metrics.</p>
        </div>
        <div class="timeline-item">
          <span class="when">Planned</span>
          <h4>C++ core and bindings</h4>
          <p>Performance-critical implementations with Python bindings for real-time pipelines.</p>
        </div>
        <div class="timeline-item">
          <span class="when">Planned</span>
          <h4>Streaming stack &amp; end-to-end apps</h4>
          <p>Adaptive 4D streaming pipelines and reference applications for telepresence and robotics.</p>
        </div>
      </div>
    </div>
  </section>

  <section class="section" id="contributing">
    <div class="container">
      <div class="section-head left">
        <span class="section-eyebrow">Contributing</span>
        <h2>Get involved</h2>
        <p>Open4D is an open research platform — contributions are welcome in many forms.</p>
      </div>
      <div class="grid grid-3">
        <div class="card reveal">
          <h3>New modules</h3>
          <p>Codecs, trackers, editors, or any algorithm for time-varying geometry, built on the core API.</p>
        </div>
        <div class="card reveal">
          <h3>Benchmarks &amp; datasets</h3>
          <p>Reimplemented baselines, new test content, and evaluation configurations.</p>
        </div>
        <div class="card reveal">
          <h3>Metrics</h3>
          <p>Quality, rate, latency, and temporal-stability measures for systems-aware evaluation.</p>
        </div>
        <div class="card reveal">
          <h3>Documentation</h3>
          <p>Tutorials, examples, and API documentation that lower the barrier to entry.</p>
        </div>
        <div class="card reveal">
          <h3>Performance</h3>
          <p>Optimizations, C++ ports, and profiling for real-time and on-device pipelines.</p>
        </div>
        <div class="card reveal">
          <h3>Applications</h3>
          <p>End-to-end demos — telepresence, robotics, digital twins — that exercise the full stack.</p>
        </div>
      </div>
      <div class="callout" style="margin-top: 32px;">
        <span class="callout-icon">🤝</span>
        <p>
          Start with an issue or pull request on <a href="https://github.com/open4dfoundation/Open4D" target="_blank" rel="noopener">GitHub</a>,
          or <a href="mailto:m.dasari@northeastern.edu">reach out directly</a> if you'd like to discuss a larger contribution.
        </p>
      </div>
    </div>
  </section>

  <section class="section section-alt" id="citation">
    <div class="container">
      <div class="section-head left">
        <span class="section-eyebrow">Citation</span>
        <h2>How to cite</h2>
        <p>If you use Open4D in your research, please cite it.</p>
      </div>
      <div style="max-width: 720px;" class="reveal">
        <div class="code-block">
          <div class="code-head"><span>BibTeX</span><button class="copy-btn">Copy</button></div>
          <pre><code>@software{<span class="fn">open4d2026</span>,
  <span class="kw">title</span>  = {<span class="str">Open4D: An Open Platform for Time-Varying 4D Geometry Data</span>},
  <span class="kw">author</span> = {<span class="str">Spatial Intelligence Research Group</span>},
  <span class="kw">year</span>   = {<span class="num">2026</span>},
  <span class="kw">url</span>    = {<span class="str">https://github.com/open4dfoundation/Open4D</span>}
}</code></pre>
        </div>
        <p style="color: var(--text-muted); font-size: 0.92rem;">
          A <code style="font-family: var(--mono); font-size: 0.85em; color: #a5b4fc;">CITATION.cff</code> file
          with the canonical citation metadata ships in the repository root.
        </p>
      </div>
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  </section>

  <section class="cta-band">
    <h2>Questions? Ideas? Datasets?</h2>
    <p>We're building Open4D in the open and would love to hear from researchers and practitioners working with 4D data.</p>
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