AirCode: Unobtrusive Physical Tags for Digital Fabrication
summary
Embeds machine-readable tags as subsurface air pockets during fabrication and decodes them by separating direct and global components with a projector–camera capture (checkerboard patterns) and a robust binary-layout inspired by QR codes; prototypes on single-material 3D prints, curved mugs, a triangular drawer and paper stacks reliably convey metadata and guide robotic grasps. Visibility is constrained by measured 0.1%–10% contrast threshold; pipeline currently takes minutes to capture, bit size is limited by printer resolution, and tags persist across ~1 year informal tests.
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chapters (16)
- 0:00Start
- 0:22Tags are everywhere.
- 2:19Light Transport
- 3:44Separate Global Component
- 4:27Air Pockets
- 5:29AirCode Layout
- 6:05AirCode Benefits
- 6:35Invisbity: Contrast Threshold
- 6:50Invisibility: Contrast Threshold
- 7:52Layered Scattering Model
- 8:34Multi-Layer Profile
- 10:01Metadata Embedding
- 10:53Physical Hyperlink
- 13:17Beyond 3D Printing Materials
- 14:08Separation Results
- 14:28Conclusion
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