AMI-EV: spinning prism gives event cameras stable texture, Science Robotics 2024
RexDouglass · x · 2026-10-18
Event cameras fire pixels asynchronously on brightness change, but edges parallel to camera motion produce almost no events—a stationary robot can lose the very texture it needs for tracking.
A 2024 Science Robotics paper by Botao He, Fei Gao, Cornelia Fermüller and collaborators solves this with a physical hack inspired by human microsaccades: a rotating wedge prism mounted in front of a 640×480 event sensor sweeps the scene in tiny circles, continuously triggering events. The prism-induced rotation is algorithmically compensated via geometric optics, yielding stable texture and high informational output at low latency—performance neither RGB nor standard event cameras achieve on low- and high-level vision tasks.
Paper, videos, and open-source code are available.
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