Built-up change explorer
Sentinel-1 + Sentinel-2 detected built-up gain (2018→2023), validated against Google Open Buildings 2.5D. Part of
builtup-mcp
.
Area of interest
Layers
Agreement (detected & reference)
Detected only
Reference only (undetected)
AOI boundary
Yellow vs (yellow+red) shows precision; yellow vs (yellow+cyan) shows recall.
Optical reference (Sentinel-2)
Off (basemap only)
Before
After
True-color Sentinel-2 (10 m), least-cloudy scene per epoch.
Basemap
High-res context:
open this AOI in Google Earth
(use its historical slider).
Validation (this AOI)
…