photogrammetryderived

Photogrammetryderived is an adjective used to describe products, measurements, or datasets that have been produced using photogrammetric techniques. Photogrammetry is the science of obtaining reliable measurements from photographs, often by using overlapping images to reconstruct three-dimensional geometry.

In a typical photogrammetryderived workflow, multiple images are captured of a scene, features are matched across images, camera positions are estimated through bundle adjustment, and dense multi-view stereo is used to generate a point cloud, which can be converted into a mesh, a textured surface, or a digital elevation model.

Compared with LiDAR-derived data, photogrammetryderived outputs rely on image quality and coverage; they may be more cost-effective for large areas and historically accessible, yet performance can suffer on textureless surfaces, in reflective areas, or under occlusion. Georeferencing can be achieved with ground control points or GNSS.

Applications include topographic mapping, cultural heritage documentation, archaeological recording, urban modeling, environmental monitoring, and virtual reconstruction for film and games.

The term is commonly used alongside related concepts such as structure from motion (SfM), dense image matching, and photorealistic texturing; in practice, photogrammetryderived data are distinguished from laser-derived data by their source and the methods used to reconstruct geometry.