Tomo: Wearable, Low-Cost Electrical Impedance Tomography for Hand Gesture Recognition
summary
Tomo is a wrist/arm wearable using Electrical Impedance Tomography to image interior arm impedance and classify hand gestures in real time. The prototype uses 8 electrodes, 28 pairwise paths with a 40 kHz 400 mVpp excitation, an off‑the‑shelf network analyzer chip and Bluetooth. User study reports up to 97% accuracy at the wrist and 93% on the forearm, ~10 fps capture, <$10 component cost in volume, and demonstrated live gesture control of a smartwatch.
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chapters (23)
- 0:00Introduction
- 0:20Smartwatches
- 0:56Possible Solutions
- 1:29Electrical impedance tomography
- 1:57What is tomography
- 2:41Tomographic techniques
- 3:16How Tomo works
- 4:03Tomo demo
- 6:53Tomo components
- 7:15Tomo schematic
- 8:11Tomo setup
- 8:27New Tomo setup
- 8:41Calibration
- 9:02User Study
- 9:44Gesture Set
- 9:57Hand Gesture Set
- 10:14Results
- 10:41Accuracy
- 11:06Limitations
- 12:08Example
- 12:51Future Work
- 13:35Demo
- 15:52Live Demo
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