Kailai Cui

Kailai Cui

Resource-efficient multimodal AI systems through task-aware inference and serving

EventHOI: Event-Driven Energy-Efficient Hand-Object Interaction Logging on Smartglasses

Published in Manuscript under review, 2026

Recommended citation: Le Zhang, Kailai Cui, Hao Chen, Vlad Roznyatovskiy, Jianzhong Zhang, Anhong Guo, Kang G. Shin, Ke Sun, "EventHOI: Event-Driven Energy-Efficient Hand-Object Interaction Logging on Smartglasses." Manuscript under review.

EventHOI combines low-power event sensing, IMU-based egomotion cancellation, and interaction-aware compression to capture RGB evidence around hand-object interactions. Across 50 hours of data with more than 19,000 verified interactions, it reduced RGB frames by 50-65% and bandwidth by 2.7x compared with uniform 1-FPS RGB, with a 1.0-2.0 percentage-point accuracy loss and projected 33% daily power savings.