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AEC Technology Glossary

Reality Capture

What is Photogrammetry?

Photogrammetry reconstructs 3D geometry from overlapping 2D photographs — software finds common features across images and triangulates their positions. It turns an ordinary camera or drone into a 3D capture device.

In practice

Drone photogrammetry is the workhorse of site mapping: orthophotos, terrain models, and stockpile volumes from a 20-minute flight. It trades some accuracy against LiDAR for dramatically lower cost.

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