Orthophotomap

Orthophotomap

 

a photographic map of a locality on an exact geodetic basis. An orthophotomap is obtained through an aerial photographic survey and the subsequent conversion of the aerial photographs from a gnomonic to an orthogonal projection by the efficient method, developed in the mid-1960’s, of differential orthogonal photo conversion. In contrast to the well-known method of converting aerial photographs by zones, the new method automatically eliminates the distortions in an aerial photograph caused by the locality’s relief and by deviations of the camera’s axis from vertical during the survey. This is effected by the successive projection of the image being converted in the smallest possible sections by means of special devices called orthophotoprojectors. Orthophotographs, that is, aerial photos converted by this method, make possible the compilation of orthophotomaps for any region, thus significantly expanding the use of material from aerial photographic surveys for topographical, geological, and other planning and surveying purposes.

L. M. GOL’DMAN

References in periodicals archive ?
Contract award: modernization and updating of databases lpis system - orthophotomap development for the area about 235 000 km2, including identification of land cover change (orto2015).
In the second step, the 3D model based on the non-filtered data set is combined with the orthophotomap to visualise the territory (Fig.
The Bulgarian Agriculture Minister Miroslav Naydenov has announced that the deadline for the update ofA 60% of the country's territory forA the existingA orthophotomap of is January 31, 2011.
Highlights of this period would include the compilation of 100 scale plan/topo and 200 scale orthophotomap map series of the site and surrounds, the addition of a handheld GPS with sub-meter accuracy and ArcPAD software that enabled the users to collect their own data, the use of GPS and ArcPAD to capture the utilities layers into the system, the deployment of ArcReader making GIS data accessible to all Badger staff at no cost to the budget, the creation of a GIS newsletter, a three-fold increase in workstation GIS users and training, and the institution of a GIS Steering Committee to evaluate feedback and guide future system development.
For example, the orthophotomap information is essential for the updating of the topographic database, and the topographic elevation information is critical for the generation of the orthophotomap.
b) True position defined by locating the coordinates of the units on the orthophotomap using GIS software.
1B hereto contains a map showing the assignment of Polish forest districts to Part A, Part B and Part C of the contract, for which in a given part of the contract should be performed and orthophotomap photogrammetric images.
Contract notice: Make an image high and medium voltage lines and digitized spatial model, orthophotomap and analyst based on data obtained from a helicopter flight test in 2015 for tauron distribution sa
Contract notice: Modernisation and updating of databases lpis system - development orthophotomap for the area about 235 000 km2, with identification of land cover change (orto2015).
1) high-resolution vertical aerial photos and orthophotomap - set data obtained twice (spring-summer and autumn)
2 Site plan at a scale of 1:1000, drawn on orthophotomap reflects current land use for each of the proposed five options, including the option in accordance with the Study of Conditions and Directions of Spatial Development and Municipal NaleczEw variant through street Cynkowska and further variant consistent with the study of determinants and Directions of Spatial Development Municipal NaleczEw, showing:
orthophotomap and reference data on the accuracy of the basic maps.