- Review
Collective Sensing: Integrating Geospatial Technologies to Understand Urban Systems—An Overview
- Thomas Blaschke,
- Geoffrey J. Hay,
- Qihao Weng and
- Bernd Resch
Cities are complex systems composed of numerous interacting components that evolve over multiple spatio-temporal scales. Consequently, no single data source is sufficient to satisfy the information needs required to map, monitor, model, and ultimatel...

