orthophotograph

orthophotograph

[‚ȯr·thə′fōd·ə‚graf]
(geology)
A photographic copy, prepared from a photograph formed by a perspective projection, in which the displacements due to tilt and relief have been removed.

orthophotograph

(Data West Research Agency definition: see GIS glossary.) An aerial photograph in which the displacement of images has been removed and that has the distortion due to tilt, curvature, and ground relief corrected. It is a "scale corrected" aerial image, depicting ground features in their exact ground positions, in which distortion caused by camera and flight characteristics and relief displacement have been removed using photogrammetric techniques.
References in periodicals archive ?
Using old military survey maps and orthophotograph maps to analyse long-term land cover changes--Case study (Czech Republic).
We also thank Michael Hardy, GIS specialist at the University of Missouri Center for Applied Research and Environmental Systems for his assistance with the orthophotograph of Beaver Dam and GIS.
For example, an aerial digital orthophotograph can be used as a basis for digitizing.
With the ground control points collected from a georeferenced orthophotograph, the model was transformed to a real-world coordinate.
service for photogrammetric scanning, georeferencing, documentation, metadatacin, flight management system and cargo in the same fund municipal file aerial photography, under the National Plan of Air orthophotograph (PNOA) contract.
We are would like to hear from specialist contractors who are able to supply the following services: High resolution digital aerial photography suitable for the production of orthophotographs, Seamless orthophotograph coverages of each of the Bailiwick Islands, Digital Elevation and Surface Models, Acquisition and supply of Lidar survey data, Other related services such as:i) Thermal imagery.
Several municipalities in the turku region~~s guide map area are renewing their orthophotographs.
Spatio-temporal dynamics of soil sealing have been regularly studied with the use of 20th century maps, aerial photographs, orthophotographs and satellite images (Ridd, 1995; Zhang, 2001; Wu, 2004; Moeller, 2005; Kampouraki et al.
In addition to NWI, GIS data used to evaluate the sites included the US Geological Survey's National Hydrography Dataset (NHD) and National Elevation Dataset, and 1-m color orthophotographs.
From a single flight, operators are able to generate feature maps, topographic contours, 3-D surface models, and orthophotographs, while the data obtained can be processed into outputs such as digital surface models (DSMs), digital terrain models (DTMs) and true orthomosaics.
From a single flight, operators are able to generate feature maps, topographic contours, 3-D surface models and orthophotographs, while the data obtained can be processed into outputs such as digital surface models (DSMs), digital terrain models (DTMs) and true orthomosaics.