Notes

Field notes from measuring cities.

Engineering posts, field stories, and essays — written as the work happens. First posts are being drafted now; the topics below are what's coming.

Engineering · In draft

Day–night image pairs as a safety signal

The same street earns very different scores at 2 p.m. and 10 p.m. Why averaging them hides the thing you care about, and how we built the paired-evaluation pipeline.

Engineering · In draft

Fusing 2D imagery, 3D reconstruction, and LiDAR

Street-level imagery alone misses geometry — kerb heights, canopy, overhead wires. How one backbone learns from all three modalities, and where it still fails.

Essay · In draft

The shortest route is rarely the one you wanted

We route on distance because that was the 1990s answer. A founder essay on what an honest navigation system would optimize for instead.

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