Accurate and Low-Latency Sensing of Touch Contact on Any Surface with Finger-Worn IMU Sensor
summary
A finger-worn IMU ring detects touch moments with a claimed 99% f1 score and median latency around 10 ms by sampling at 200 Hz and classifying 50 ms windows with an SVM on 45 statistical features. Ring placement on the proximal phalanx placement of index or middle finger yields best results. User studies test 70 tapping postures (20 participants) and technical sensing (12 participants), and a Piano Tiles task shows higher accuracy and steadier timing than headset depth-camera thresholds (10 mm).
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chapters (11)
- 0:00Introduction
- 0:26Motivation and challenges
- 1:55Solution overview
- 2:39User preference study
- 5:48Ring placement preferences
- 6:33Technical approach
- 8:01Algorithm design
- 9:30Runtime algorithm
- 10:17Evaluation with Piano Tiles
- 11:41Limitations and future work
- 12:27Q&A session
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