Computer
Information Theory, Inference & Learning Algorithms
Information Theory, Inference & Learning Algorithms
RFIG lamps: interacting with a self-describing world via photosensing wireless tags and projectors
ACM SIGGRAPH 2004 Papers
Invisible Marker Tracking for AR
ISMAR '04 Proceedings of the 3rd IEEE/ACM International Symposium on Mixed and Augmented Reality
Pervasive 2D Barcodes for Camera Phone Applications
IEEE Pervasive Computing
Localization system for large indoor environments using invisible markers
Proceedings of the 2008 ACM symposium on Virtual reality software and technology
Fabricating microgeometry for custom surface reflectance
ACM SIGGRAPH 2009 papers
Bokode: imperceptible visual tags for camera based interaction from a distance
ACM SIGGRAPH 2009 papers
ACM SIGGRAPH 2010 papers
Physical reproduction of materials with specified subsurface scattering
ACM SIGGRAPH 2010 papers
Design and fabrication of materials with desired deformation behavior
ACM SIGGRAPH 2010 papers
Fabricating articulated characters from skinned meshes
ACM Transactions on Graphics (TOG) - SIGGRAPH 2012 Conference Proceedings
Stress relief: improving structural strength of 3D printable objects
ACM Transactions on Graphics (TOG) - SIGGRAPH 2012 Conference Proceedings
Printed optics: 3D printing of embedded optical elements for interactive devices
Proceedings of the 25th annual ACM symposium on User interface software and technology
Hiding a second appearance in a physical relief surface
IH'12 Proceedings of the 14th international conference on Information Hiding
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We introduce InfraStructs, material-based tags that embed information inside digitally fabricated objects for imaging in the Terahertz region. Terahertz imaging can safely penetrate many common materials, opening up new possibilities for encoding hidden information as part of the fabrication process. We outline the design, fabrication, imaging, and data processing steps to fabricate information inside physical objects. Prototype tag designs are presented for location encoding, pose estimation, object identification, data storage, and authentication. We provide detailed analysis of the constraints and performance considerations for designing InfraStruct tags. Future application scenarios range from production line inventory, to customized game accessories, to mobile robotics.