WonderZoom:

Multi-Scale 3D World Generation

  • Stanford University

  • *Contributed Equally

Teaser Image

WonderZoom enables interactive exploration across spatial scales. Users can zoom into any region and specify prompts to generate new fine-scale content while maintaining cross-scale consistency. Here we show three zoom-in sequences

Generated Multi-Scale Worlds

Street

Sunflower

Beach1

Beach2

Coral

House

Tea Garden1

Tea Garden2

Tree

Wooden

Interactive Viewing

Keyboard: Move by "W/A/S/D", look around by "I/J/K/L". Rotate around the center point by "F". Click the button "Scale 0/1/2" to zoom-in/out.
Note: Clicking an image will automatically download a generated world example from an anonymous source. After loading, please click on the canvas to activate control. The rendering here is done on your device in real-time. Downloading an example (~100MB) may take a while. Since the web renderer does not support our proposed multi-scale representation rendering and it applies depth quantization, the rendering quality is degraded compared to the videos above.

Drag & drop .splat/.spz/.ply files
or double-click to open
FOV: 18.9°
Focal: 1441px
FPS: 0
Position:
  X: 0.00
  Y: 0.00
  Z: 0.10
Rotation:
  X: 0.00°
  Y: 0.00°
  Z: 0.00°
Splats: 0
Rendered: ?
Speed Factor: 1.00
Orbit: OFF
Split: OFF
Move
W
Orbit
A
S
D
F
Look
I
J
K
L

Approach

From an input image, we first reconstruct an initial 3D scene. Users specify prompts and camera viewpoints to generate finer-scale content. Our progressive detail synthesizer creates new-scale images, registers depth to maintain geometric consistency, and synthesizes auxiliary views for complete 3D scene creation. Our scale-adaptive Gaussian surfels enable dynamic updates without re-optimization, seamlessly integrating new content while preserving real-time rendering.