[Submitted on 13 Oct 2026]
Title:RingNav: Task-Shaped Circular Memory for Visual Heading
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Abstract:Tiny robots have limited computation and memory, yet visual navigation systems often maintain more state than a task requires. We ask whether persistent memory can instead be shaped by the task. We present \textbf{RingNav}, a \(10.6\)k--parameter visual heading estimator that constrains its memory to the circular manifold \(S^1\). RingNav learns only the turn between consecutive images, while heading is composed directly on the circle. On the TartanAir Visual SLAM Challenge, RingNav reduces mean absolute turn error by \(27\%\) and accumulated heading error over $4$ sec by \(15\%\) relative to a similarly sized learned-memory model. The structured update also gives exactly zero turn for identical frames and exact cancellation under sequence reversal. Without fine-tuning, RingNav transfers to real-world drone experiments and continues estimating heading under severe visual degradation. RingNav runs at $27.3$Hz on Raspberry Pi Zero 2W and can be deployed on an ultra-low power GAP8 processor at $33.4$Hz.
Comments: 9 pages, 5 figures
Subjects:
Robotics (cs.RO); Computer Vision and Pattern Recognition (cs.CV)
Cite as: arXiv:2610.19044 [cs.RO]
(or arXiv:2610.19044v1 [cs.RO] for this version)
https://doi.org/10.48550/arXiv.2610.19044
arXiv-issued DOI via DataCite (pending registration)
Submission history
From: Naitri Rajyaguru [view email] [v1] Tue, 13 Oct 2026 18:33:46 UTC (1,941 KB)
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