COLORING projects — building AR coloring experiences

COLORING projects bring visitors' paper coloring to life in 3D. They are especially popular at children's events and education programs.

You prepare two assets.

1. A coloring sheet image (PNG) — the line art visitors color, which also serves as the camera's recognition target. Register it exactly as people see it (never flipped vertically); richer lines and stronger contrast make recognition more stable.
2. A 3D model (GLB) — the model paired with the sheet. Author at 1 unit = 1 m, and specify the names of the meshes to be painted on the registration screen.

When a visitor points the camera at their colored sheet, their colors are applied onto the 3D model's surface. No separate mask image is needed.

Operations tip: before the event, test recognition and color transfer with the actual print. Avoid glossy laminated prints, which reflect too much.

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