Pulp Nonfiction: Low-Cost Touch Tracking for Paper
summary
A low-cost system implements electric field tomography under ordinary printer paper using a $10 sensing board and etched copper traces or carbon-loaded conductive paint laminated to the back; it runs ~35 fps and cuts cost to about $0.30 per sheet. Evaluation with 11 participants (≈7,000 no-touch, 5,000 touch trials) yields 97.2% touch/no-touch accuracy, 1.4 cm median finger error and 4.3 cm pen error, and supports multi-finger and simple drawn-trace reconstruction.
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chapters (9)
- 0:00Introduction to Pulp Nonfiction
- 1:09Sensing principle and tracking
- 4:26Hardware and circuit design
- 7:16Prototyping materials and methods
- 8:43Touch tracking pipeline
- 9:47Evaluation and results
- 12:37Example applications
- 13:50Limitations and future work
- 15:18Q&A session
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