Monocular vehicle speed estimation on a phone, fully offline: YOLO nano + Kalman + optical-flow ego-motion compensation. Where does this break?
This story is from 2026-09-02. It is preserved in the archive; the latest stories are on the live feed.
I have spent the last 18 months building a mobile pipeline that estimates the speed of passing vehicles from a single handheld camera, entirely on device. It runs on Android and iOS now, and I would like the sanity check I cannot get from end users. The pipeline: YOLO nano detector on the camera fr…
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