Tutorials

Render your first Gaussian Splat

The fastest way to learn RadianceKit is to run the whole pipeline once on ready-made photos. This walkthrough uses Simple Mode and the built-in sample set, so you can go from photos to a finished 3D scene in a few minutes without any setup.

Start with ready-made photos

You do not need your own captures yet. In Simple Mode the import screen offers “Try Sample Scene” (a finished flower bouquet you can rotate right away) and “Download Sample Photos” (about 427 MB, 960 real frames). Choose “Download Sample Photos” to run the full pipeline yourself and see how long camera alignment and training take on your Mac, then swap in your own shots later.

What good input looks like

When you move to your own captures, this is the single biggest factor in quality: shoot as many sharp photos as you can from many angles, keep a generous overlap (about 60–80%) between consecutive frames, and keep lighting, white balance and exposure constant across the whole set. RadianceKit shows a coloured warning under the image list — red below 10 photos, orange for 10–19, gone at 20 and up. Aim for 30–50 evenly spaced shots around your subject at roughly the same distance.

Step by step

  1. 1
    Import — Open Simple Mode (Cmd-1) and drag your photos onto the drop zone, or click “Download Sample Photos” to start with the built-in set.
  2. 2
    Pick a preset — In the Quality picker choose Quick or Preview — both are free and finish in a few minutes. Balanced and Quality are sharper but need the full version and take longer.
  3. 3
    Start processing — Click Start Processing. RadianceKit first aligns the cameras, then trains the Gaussians. The top bar shows overall progress: alignment is the first third, training the rest.
  4. 4
    Preview — When training finishes the 3D viewport opens automatically. Drag to rotate, scroll to zoom, Cmd-drag to pan. Turn the scene all the way around and check for floaters or a smeared background.
  5. 5
    Export — Click Export and pick a format — PLY for other 3D tools, SPZ or .splat for the web, or a self-contained web viewer to share by link. Export needs the full version; training on the free presets is unlimited.

Good defaults for a first run

  • Preset: Quick or Preview (free, fast)
  • Images: 20 or more (30–50 ideal) — sharp, overlapping, same distance
  • Importing a video instead? Start around 5 fps (about 150 frames for a 30-second clip)