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<!doctype html><html lang=en-us><head><meta charset=utf-8><meta http-equiv=X-UA-Compatible content="IE=edge"><meta name=viewport content="width=device-width,initial-scale=1"><meta name=referrer content="strict-origin-when-cross-origin"><meta name=description content="A blog about tech, programming, and whatever interests me. Deep dives into software, tools, and the digital world."><meta name=keywords content="AI"><meta name=author content="Isaac Lins"><link rel=canonical href=https://isaaclins.com/pr-preview/pr-68/blog/4d-gaussian-splatting-braindance/><title>4D Gaussian Splatting: The Tech That Could Make Braindance Real | Isaac Lins</title><meta property="og:type" content="article"><meta property="og:url" content="https://isaaclins.com/pr-preview/pr-68/blog/4d-gaussian-splatting-braindance/"><meta property="og:title" content="4D Gaussian Splatting: The Tech That Could Make Braindance Real"><meta property="og:description" content="A blog about tech, programming, and whatever interests me. Deep dives into software, tools, and the digital world."><meta property="og:site_name" content="Isaac Lins"><meta property="og:image" content="https://isaaclins.com/pr-preview/pr-68/img/og-base_hu_5232f6644e631baa.png"><meta property="og:image:width" content="1200"><meta property="og:image:height" content="630"><meta property="article:published_time" content="2025-06-12T00:00:00Z"><meta property="article:modified_time" content="2025-06-12T00:00:00Z"><meta property="article:tag" content="AI"><meta property="article:author" content="Isaac Lins"><meta name=twitter:card content="summary_large_image"><meta name=twitter:title content="4D Gaussian Splatting: The Tech That Could Make Braindance Real"><meta name=twitter:description content="A blog about tech, programming, and whatever interests me. Deep dives into software, tools, and the digital world."><meta name=twitter:image content="https://isaaclins.com/pr-preview/pr-68/img/og-base_hu_5232f6644e631baa.png"><script type=application/ld+json>{"@context":"https://schema.org","@type":"BlogPosting","headline":"4D Gaussian Splatting: The Tech That Could Make Braindance Real","description":"A blog about tech, programming, and whatever interests me. Deep dives into software, tools, and the digital world.","datePublished":"2025-06-12T00:00:00Z","dateModified":"2025-06-12T00:00:00Z","author":{"@type":"Person","name":"Isaac Lins","url":"https:\/\/isaaclins.com"},"publisher":{"@type":"Organization","name":"Isaac Lins","logo":{"@type":"ImageObject","url":"https:\/\/isaaclins.com\/images\/logo.png"}},"image":"https:\/\/isaaclins.com\/pr-preview\/pr-68\/img\/og-base_hu_5232f6644e631baa.png","url":"https:\/\/isaaclins.com\/pr-preview\/pr-68\/blog\/4d-gaussian-splatting-braindance\/","mainEntityOfPage":{"@type":"WebPage","@id":"https:\/\/isaaclins.com\/pr-preview\/pr-68\/blog\/4d-gaussian-splatting-braindance\/"},"keywords":["AI"]}</script><link rel="shortcut icon" type=image/x-icon href=/pr-preview/pr-68/favicon.ico><link rel=apple-touch-icon href=/pr-preview/pr-68/apple-touch-icon.png><link rel=stylesheet href=/pr-preview/pr-68/css/main.c1e27b1ef1e59d0c17b149e8da0e33b6d3aaa1e89291e4c52a759a80d842154b56f3174b5f589ab6f0a243897eb2d13f504cdada9f88e3d24ebb001c42ea13a8.css integrity="sha512-weJ7HvHlnQwXsUno2g4zttOqoeiSkeTFKnWagNhCFUtW8xdLX1iatvCiQ4l+stE/UEza2p+I49JOuwAcQuoTqA=="><script src=https://cdn.jsdelivr.net/npm/mermaid@10/dist/mermaid.min.js></script><script>mermaid.initialize({startOnLoad:!0,theme:"dark"})</script></head><body a=auto><a class=skip-link href=#content>skip to content</a><nav class=site-nav aria-label=Primary><div class=site-nav-inner><a class=site-nav-brand href=/pr-preview/pr-68/>isaaclins.com</a><ul class=site-nav-links><li><a href=/blog/ aria-current=page>blog</a></li><li><a href=/resume/>resume</a></li><li><a href=/reading/>reading</a></li><li><a href=/pr-preview/pr-68/#contact>contact</a></li></ul></div></nav><main class=page-content id=content aria-label=Content><div class=w><div class=breadcrumbs><div><a href=/>Home</a>
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/ <a href=https://isaaclins.com/pr-preview/pr-68/blog/>Blog</a>
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/ <a href=https://isaaclins.com/pr-preview/pr-68/blog/4d-gaussian-splatting-braindance/>4d gaussian splatting braindance</a></div></div><a href=/pr-preview/pr-68/></a><article><p class=post-meta><time datetime="2025-06-12 00:00:00 +0000 UTC">Jun 12, 2025</time></p><p class=post-tags>Tags:
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<a href=/tags/ai>AI</a></p><p class=post-complexity>Complexity:
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<a href=/complexity/easy>easy</a></p><h1>4D Gaussian Splatting: The Tech That Could Make Braindance Real</h1><p>I just finished Cyberpunk 2077, and let me tell you; Braindance is the coolest (and creepiest) tech in that game. For the uninitiated: imagine strapping on a headset and reliving someone else&rsquo;s memories, sights, sounds, and all. It&rsquo;s like VR, but on steroids, laced with a shot of existential dread.</p><p>But here&rsquo;s the thing: what if I told you we&rsquo;re inching closer to that kind of immersive experience, not with some sci-fi neural implant, but with a wild new graphics technique called <strong>4D Gaussian Splatting</strong> (4DGS)?</p><h2 id=wait-what-is-4d-gaussian-splatting>Wait, what is 4D Gaussian Splatting?</h2><p>Let&rsquo;s break it down. Traditional 3D rendering is like building a Lego city and walking around it. 4DGS? It&rsquo;s like building a Lego city that morphs, dances, and explodes in real time—while you&rsquo;re still walking through it.</p><p>4DGS is a new way to represent and render <strong>dynamic scenes</strong>. Think moving people, shifting lights, exploding cars—in real time, at high resolution. Instead of rendering each frame separately (like a flipbook), 4DGS encodes both space (3D) and time (the 4th D) into a single, efficient model.</p><blockquote><p>TL;DR: 4DGS lets you render entire moving scenes, not just static objects, and it does it <em>fast</em>.</p></blockquote><h2 id=how-does-it-work-the-explain-like-im-five-version>How Does It Work? (The &ldquo;Explain Like I&rsquo;m Five&rdquo; Version)</h2><ul><li><strong>3D Gaussians:</strong> Imagine a cloud of glowing orbs (the &ldquo;splatting&rdquo;). Each orb holds info about color, position, and size.</li><li><strong>4D Neural Voxels:</strong> Now, add time to the mix. These orbs can move, stretch, and change as the scene evolves.</li><li><strong>Neural Magic:</strong> A lightweight neural network predicts how these orbs should morph at any given moment.</li></ul><p>Here&rsquo;s a visual to help you out:</p><div class=mermaid>flowchart LR
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A[3D Gaussians] -- Time --> B[4D Neural Voxels]
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B --> C[Neural Encoder]
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C --> D[Deformation Decoder]
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D --> E[Rendered Scene]</div><p><img src=/images/4dgs.gif alt="3D Gaussians and 4D Neural Voxels" loading=eager decoding=async fetchpriority=high>
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(this was taken from the <a href=https://guanjunwu.github.io/4dgs/>4DGS demo</a>, and was taken with a single camera moving through the scene)</p><h2 id=why-should-you-care>Why Should You Care?</h2><ul><li><strong>Real-Time Rendering:</strong> 4DGS can render dynamic scenes at 30+ FPS, even at high resolutions. That&rsquo;s buttery smooth.</li><li><strong>Efficient Training:</strong> It learns a whole scene in about 30 minutes. No more waiting hours for your digital world to load.</li><li><strong>Storage Win:</strong> It&rsquo;s way more compact than storing every frame separately.</li></ul><h3 id=whats-actually-possible-right-now>What&rsquo;s Actually Possible Right Now?</h3><ul><li><strong>Dynamic Scene Capture:</strong> Record a real-world event (like a dance battle or a street chase) and replay it from any angle, in real time.</li><li><strong>VR/AR:</strong> Imagine walking through a memory, not just watching it. (Hello, Braindance!)</li><li><strong>Film & VFX:</strong> Directors can capture a scene once and tweak the camera path endlessly in post.</li></ul><h2 id=the-future-braindance-but-for-real>The Future: Braindance, But For Real?</h2><p>Here&rsquo;s where it gets spicy. If 4DGS keeps improving, we could:</p><ul><li><strong>Capture and Share Memories:</strong> Relive your birthday party from <em>any</em> perspective.</li><li><strong>Hyper-Realistic VR:</strong> No more uncanny valley. You&rsquo;re <em>in</em> the scene, not just watching it.</li><li><strong>AI-Generated Worlds:</strong> Imagine AI dreaming up entire dynamic worlds you can explore, not just static landscapes.</li></ul><h2 id=hot-takes--final-thoughts>Hot Takes & Final Thoughts</h2><ul><li>4DGS is the closest thing we&rsquo;ve got to real-life Braindance tech. It&rsquo;s not perfect, but it&rsquo;s a hell of a leap.</li><li>The future of VR, film, and even gaming is about to get a lot weirder—and a lot more awesome.</li><li>If you&rsquo;re not excited, you&rsquo;re not paying attention.</li></ul><blockquote><p>You&rsquo;re still here? Go build something. Or at least go watch the <a href=https://guanjunwu.github.io/4dgs/>4DGS demo</a>. It&rsquo;ll blow your mind.</p></blockquote><p>~ ⋖,^>&lt;</p></article><hr><p>© 2026 Isaac Lins. All rights reserved.<br><a href=https://www.linkedin.com/in/isaaclinsdotcom/>LinkedIn</a> | <a href=https://github.com/isaaclins>GitHub</a> | <a href=mailto:contact@isaaclins.com>Mail</a> | <a href=https://buymeacoffee.com/isaaclins>Buy me a coffee</a></p></div></main></body></html>

‎pr-preview/pr-68/blog/4d-gaussian-splatting-braindance/index.md‎

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# 4D Gaussian Splatting: The Tech That Could Make Braindance Real
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*Source: https://isaaclins.com/pr-preview/pr-68/blog/4d-gaussian-splatting-braindance/*
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I just finished Cyberpunk 2077, and let me tell you; Braindance is the coolest (and creepiest) tech in that game. For the uninitiated: imagine strapping on a headset and reliving someone else's memories, sights, sounds, and all. It's like VR, but on steroids, laced with a shot of existential dread.
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But here's the thing: what if I told you we're inching closer to that kind of immersive experience, not with some sci-fi neural implant, but with a wild new graphics technique called **4D Gaussian Splatting** (4DGS)?
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## Wait, what is 4D Gaussian Splatting?
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Let's break it down. Traditional 3D rendering is like building a Lego city and walking around it. 4DGS? It's like building a Lego city that morphs, dances, and explodes in real time—while you're still walking through it.
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4DGS is a new way to represent and render **dynamic scenes**. Think moving people, shifting lights, exploding cars—in real time, at high resolution. Instead of rendering each frame separately (like a flipbook), 4DGS encodes both space (3D) and time (the 4th D) into a single, efficient model.
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> TL;DR: 4DGS lets you render entire moving scenes, not just static objects, and it does it _fast_.
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## How Does It Work? (The "Explain Like I'm Five" Version)
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- **3D Gaussians:** Imagine a cloud of glowing orbs (the "splatting"). Each orb holds info about color, position, and size.
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- **4D Neural Voxels:** Now, add time to the mix. These orbs can move, stretch, and change as the scene evolves.
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- **Neural Magic:** A lightweight neural network predicts how these orbs should morph at any given moment.
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Here's a visual to help you out:
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```mermaid
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flowchart LR
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A[3D Gaussians] -- Time --> B[4D Neural Voxels]
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B --> C[Neural Encoder]
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C --> D[Deformation Decoder]
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D --> E[Rendered Scene]
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```
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![3D Gaussians and 4D Neural Voxels](/images/4dgs.gif)
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(this was taken from the [4DGS demo](https://guanjunwu.github.io/4dgs/), and was taken with a single camera moving through the scene)
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## Why Should You Care?
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- **Real-Time Rendering:** 4DGS can render dynamic scenes at 30+ FPS, even at high resolutions. That's buttery smooth.
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- **Efficient Training:** It learns a whole scene in about 30 minutes. No more waiting hours for your digital world to load.
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- **Storage Win:** It's way more compact than storing every frame separately.
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### What's Actually Possible Right Now?
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- **Dynamic Scene Capture:** Record a real-world event (like a dance battle or a street chase) and replay it from any angle, in real time.
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- **VR/AR:** Imagine walking through a memory, not just watching it. (Hello, Braindance!)
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- **Film & VFX:** Directors can capture a scene once and tweak the camera path endlessly in post.
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## The Future: Braindance, But For Real?
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Here's where it gets spicy. If 4DGS keeps improving, we could:
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- **Capture and Share Memories:** Relive your birthday party from _any_ perspective.
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- **Hyper-Realistic VR:** No more uncanny valley. You're _in_ the scene, not just watching it.
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- **AI-Generated Worlds:** Imagine AI dreaming up entire dynamic worlds you can explore, not just static landscapes.
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## Hot Takes & Final Thoughts
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- 4DGS is the closest thing we've got to real-life Braindance tech. It's not perfect, but it's a hell of a leap.
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- The future of VR, film, and even gaming is about to get a lot weirder—and a lot more awesome.
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- If you're not excited, you're not paying attention.
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> You're still here? Go build something. Or at least go watch the [4DGS demo](https://guanjunwu.github.io/4dgs/). It'll blow your mind.
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~ ⋖,^><
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