What is photogrammetry?

Photogrammetry is the process of making measurements from photographs, typically aerial images, to determine the exact positions of surface points. It allows for the creation of accurate maps and 3D models by analyzing photographs that capture various features from above. This technique utilizes various principles of optics and geometry to extract spatial information about the Earth's surface, making it an essential tool in fields such as cartography, architecture, engineering, and environmental monitoring. The successful application of photogrammetry enables professionals to derive useful measurements and analyses from imagery, such as land surveys, topographic data, and asset management. Therefore, the option highlighting the use of aerial photos to make measurements accurately reflects the essence of photogrammetry and underscores its practical significance in geographic information science.