Orthophotomaps

Part of speech: noun

Definitions

1. Detailed aerial images corrected for scale and distortion to represent the Earth's surface accurately; used for mapping and geographical analysis; often created by stitching multiple overlapping photographs into a unified map
2. Maps created from aerial photographs that have been geometrically corrected to eliminate distortions, allowing precise measurement and application in surveying, planning, and environmental studies
3. Geospatial representations derived from aerial photos that are adjusted for true scale and perspective, providing accurate visual and metric information for cartography and land-use management

Etymology: Orthophotomaps is the plural of "orthophotomap", a map built from aerial photographs that have been geometrically corrected so that distortions from camera tilt, terrain relief and lens geometry are removed. The result is a picture that can be measured much like a conventional map, which is why surveyors, planners and environmental scientists rely on these products. The word is a compound of "ortho-", from Greek "orthos" meaning straight, upright or correct, attached to "photomap", a combination of "photo" and "map". Together the parts describe exactly what the product is: a photographic map in which the image has been straightened to a true geometric projection. The plural simply reflects that many such sheets or datasets are produced and compared.

Synonyms: orthophotos, aerial maps