gsplat.js

JavaScript Gaussian Splatting library

gsplat.js is an easy-to-use, general-purpose, open-source 3D Gaussian Splatting library, providing functionality similar to three.js but for Gaussian Splatting.

Quick Start

• Live Viewer Demo: Explore this library in action in the 🤗 Hugging Face demo. Note: May not work on all devices; use Bonsai for the lowest memory requirements.
• Editor Demo: Try new real-time updates and editing features in the gsplat.js editor.
• Code Example: Start coding immediately with this jsfiddle example.

Installation

Prerequisites: Ensure your development environment supports ES6 modules.

1. Set Up a Project: (If not already set up)

   Install Node.js and NPM, then initialize a new project using a module bundler like Vite:

   npm create vite@latest gsplat -- --template vanilla-ts

2. Test Your Environment:

   cd gsplat
   npm install
   npm run dev

3. Install gsplat.js:

   npm install --save gsplat

Usage

Creating a Scene

• Import gsplat.js components and set up a basic scene.
• Load Gaussian Splatting data and start a rendering loop.

(in src/main.ts if you followed the Vite setup)

import * as SPLAT from"gaussian-splat-lib";

const scene = new SPLAT.Scene();
const camera = new SPLAT.Camera();
const renderer = new SPLAT.WebGLRenderer();
const controls = new SPLAT.OrbitControls(camera, renderer.canvas);

async function main() {
    const url = "https://huggingface.co/datasets/dylanebert/3dgs/resolve/main/bonsai/bonsai-7k.splat";

    await SPLAT.Loader.LoadAsync(url, scene, () => {});

    const frame = () => {
        controls.update();
        renderer.render(scene, camera);

        requestAnimationFrame(frame);
    };

    requestAnimationFrame(frame);
}

main();

This script sets up a basic scene with Gaussian Splatting data loaded from URL and starts a rendering loop.

FAQ

Q: Can I use .ply files?

A: Yes, gsplat.js supports .ply files. See the ply-converter example for details on how to convert .ply to .splat. Alternatively, convert PLY files from URL in this jsfiddle example.

Q: What are .splat files?

A: .splat files are a compact form of the splat data, offering quicker loading times than .ply files. They consist of a raw Uint8Array buffer.

⚠️ The .splat format does not contain SH coefficients, so colors are not view-dependent.

Q: Can I convert .splat files to .ply?

A: Yes, see the commented code in the ply-converter example. Alternatively, convert .splat to .ply from URL in this jsfiddle example.

⚠️ When converting .ply -> .splat -> .ply, SH coefficients will be lost.

License

This project is released under the MIT license. It is built upon several other open-source projects:

• three.js, MIT License (c) 2010-2023 three.js authors
• antimatter15/splat, MIT License (c) 2023 Kevin Kwok
• UnityGaussianSplatting, MIT License (c) 2023 Aras Pranckevičius

Please note that the license of the original 3D Gaussian Splatting research project is non-commercial. While this library provides an open-source rendering implementation, users should consider the source of the splat data separately.

Contact

Feel free to open issues, join the Hugging Face Discord, or email me directly at [email protected].