Photogrammetry is used for which purpose?

Photogrammetry is used for which purpose?

• A. Mapping rainfall
• B. Measuring distances and sizes
• C. Evaluating soil moisture
• D. Detecting odors

Answer: (B)

Photogrammetry is the science of deriving accurate measurements from photographs. The core idea is to use the geometry of overlapping images to determine distances, sizes, and shapes on the ground. By examining stereo pairs or multiple angles, you establish scale from a known reference and compute how far apart features are, how large they are, and even build 3D models. That makes it ideal for mapping and surveying with drones, where images become precise measurements and maps. The other options aren’t a fit because rainfall mapping relies on meteorological data, soil moisture is determined by soil sensors and moisture readings, and odors require chemical detection methods, not distance measurements from photos.

Photogrammetry is the science of deriving accurate measurements from photographs. The core idea is to use the geometry of overlapping images to determine distances, sizes, and shapes on the ground. By examining stereo pairs or multiple angles, you establish scale from a known reference and compute how far apart features are, how large they are, and even build 3D models. That makes it ideal for mapping and surveying with drones, where images become precise measurements and maps. The other options aren’t a fit because rainfall mapping relies on meteorological data, soil moisture is determined by soil sensors and moisture readings, and odors require chemical detection methods, not distance measurements from photos.