Port Vila, Vanuatu — Sentinel-2 10 m ⇄ DigiFarm Deep Resolution 1 m

Buildings (11,905) Quake damage proxy SR epoch: Oct 2024 (pre-quake)
◀ Sentinel-2, 10 m — what free satellite normally gives
DigiFarm SR, 1 m — same free pixels ▶
Everything here is derived from free Sentinel data.
Buildings extracted at 1 m: pixel F1 0.61 vs 0.36 at native 10 m · boundary-F1@2 m 0.53 · 87% of extracted footprints verified real (Maxar 0.5 m truth, spatially held-out blocks).
Quake damage proxy from Sentinel-1 InSAR: available +5.5 h after the M7.3 event (first EMS product: +4 d 9 h; first usable optical pass: +26 d).

S1 coherence drop (Dec 2024 quake)

0–0.05
0.05–0.10
0.10–0.15
0.15–0.20
0.20–0.30
>0.30
Area prioritization signal — top-20% of neighborhoods hold 2× the EMS-graded damage density. Not building-level grading.
Technology demo on free Copernicus Sentinel data. Extraction metrics are validated against Maxar 0.5 m ground truth on spatially held-out blocks (full method + limitations in the accompanying report). SR imagery is model-derived — a learned prior, not a direct measurement.
© DigiFarm · Contains modified Copernicus Sentinel data 2024–2026 · Validation: Maxar/Vantor Open Data (CC BY-NC 4.0, accuracy validation only) · Training labels © OpenStreetMap contributors (ODbL) · Damage reference: Copernicus EMS EMSR782 · Basemap: Esri World Imagery