SuperSplat 4D is an enhanced version of the SuperSplat Editor, extending support to Dynamic Gaussian Splatting (4D). It is a free and open-source tool for inspecting, editing, optimizing, and publishing both static and dynamic Gaussian Splats. Built on web technologies, it runs directly in your browser.

A live version of this tool is available at: https://supersplat4d.netlify.app/

• Dynamic Gaussian Support: Load, play, and visualize dynamic splats with Time-Radial Basis Functions (TRBF).
• Format Support:
  • .sog4d: Highly compressed dynamic splat format using k-means clustering and WebP.
  • .ply: Direct loading of dynamic PLY files containing trbf_center, trbf_scale, and motion attributes.
• Dynamic Editing:
  • Select and delete artifacts or unwanted splats across the entire animation.
  • Filter splats based on dynamic opacity.
• Export Capabilities:
  • Export edited dynamic scenes back to .ply or .sog4d.
  • Selective time-range export (Scheme A: keeping original trbf_center).

The repository includes a Python script to compress raw dynamic PLY files into the efficient .sog4d format:

python ply_to_sog4d.py --ply input.ply -o output.sog4d

The script can read cfg_args directly from the PLY header if it contains a line like: comment cfg_args: duration=2.0 start=0.0 fps=30.0 sh_degree=0

To initialize a local development environment, ensure you have Node.js 18 or later installed.

1. Clone and switch branch:

   git clone https://github.com/playcanvas/supersplat.git
   cd supersplat
   git checkout splat4d

2. Install dependencies:

   npm install

3. Run development server:

   npm run develop

4. Navigate to http://localhost:3000

Supported languages are located in static/locales. To test a specific language: http://localhost:3000/?lng=<locale> (e.g., zh, en).

SuperSplat is made possible by the open source community and the original PlayCanvas team.