HCI Research Paper about Novel Gesture Interaction Technique

Developed a gesture interaction technique using affordances like twisting a bottle cap for virtual input through Machine Learning.

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Sensing Hand Object Interactions By Profiling Wrist Topography (TEI '22 Publication)

During an R&D internship at Tactual Labs in Toronto Julius designed and developed with 5 senior researchers a novel gesture recognition interaction technique. We designed, developed and tested a prototypical end-to-end system that enables users to control virtual range inputs like sliders and dials by interacting with objects in their environment with everyday hand interactions (e.g. by twisting the lid of a bottle or by stretching a rubber band).
As outcome of the work we published and presented a research paper at Tangible Embedded & Embodied Interactions (TEI) '22.


Julius Cosmo Romeo Rudolph, David Holman, Bruno de Araujo, Ricardo Jota, Daniel Wigdor, and Valkyrie Savage
In Proceedings of TEI'22. (full paper)
Video | Workshop paper

Paper Abstract

We demonstrate rich inferences about unaugmented everyday objects and hand object interactions by measuring minute skin surface deformations at the wrist using a sensing technique based on capacitance. The wristband prototype infers muscle and tendon tension, pose, and motion, which we then map to force (9 users, 13.66 +/- 9.84 N regression error on classes 0--49.1 N), grasp (9 users, 81 +/- 7 % classification accuracy on 6 grasps), and continuous interaction (10 users, 99 +/- 1 % discrimination accuracy between 6 interactions, 89--97 % accuracy on 3 states within each interaction) using basic machine learning models. We wrapped these sensing capabilities into a proof-of-concept end-to-end system, Ubiquitous Controls, that enables virtual range inputs by sensing continuous interactions with unaugmented objects. Eight users leveraged our system to control UI widgets (like sliders and dials) with object interactions (like "cutting with scissors" and "squeezing a ball"). Finally, we discuss the implications and opportunities of using hands as a ubiquitous sensor of our surroundings.