Urban change detection
Multi-date satellite comparison that surfaces what changed inside any boundary — new construction, expansion, demolition, conversion — with side-by-side visual evidence.
- Any two dates compared
- City-scale coverage
- Visual + vector evidence
Benefits
What urban change detection unlocks
Short-term optimization
- Catch unauthorized construction while it is recent
- Independent progress evidence for projects
- Objective before/after records for disputes
Long-term impact
- A continuous change ledger for the whole jurisdiction
- Growth-pattern insight for master planning
- Reduced field-verification burden
Approach & methodology
How the analytics work
We are transparent about data sources, models, and limits — so you can trust what you act on.
- Data sources
- High-resolution optical imagery on multiple dates; archives for historical baselines.
- Approach
- Change detection combining spectral differencing and ML-based built-up classification.
- Update cadence
- Monthly to quarterly comparisons; on-demand for specific dates.
- Limitations
- Detection floor tied to image resolution; small façade-level changes are not visible from orbit.
Deliverables
Expected outputs
- GIS-ready data layers (GeoJSON / KML / SHP / GeoTIFF)
- Decision-ready PDF report with interpretation
- Interactive smart map with time-series view
Process
Project stages
2–4 weeks per assessment
Define area of interest and indicators with your team
Acquire and process multi-date satellite imagery
Run analytics models and validate outputs
Deliver layers, maps, and report; set up recurring monitoring