Particulars | UAV Photogrammetry | Terrestrial Photogrammetry |
---|---|---|
Data acquisition | Manual/Automatic/Assisted | Manual |
Image resolution | High | High |
Ground coverage | m2 – km2 | m2 |
Visibility | Highly positioned elements, rooftops, walls, limited when it comes to hidden objects. | Walls up to the rooftop, allows photographing hidden objects, no visibility of rooftops. |
Flexibility | Weather – dependent, cannot fly to close to the objects around, problematic with too much greenery. | Applicable in hazardous areas, works in cloudy, drizzly weather. |
Price and operating cost | Moderate | Low – moderate |
Geo-registration possibility | High quality | Medium quality |